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Tytuł:
The energy efficiency gap in Turkish maritime transportation
Autorzy:
Konur, Olgun
Bayraktar, Murat
Pamik, Murat
Kuleyin, Barış
Nuran, Mustafa
Powiązania:
https://bibliotekanauki.pl/articles/259437.pdf
Data publikacji:
2019
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
energy efficiency gap
maritime transportation
energy efficiency technologies
carbon emission
Opis:
The Turkish Merchant Shipping Industry has recently witnessed an increasing awareness of the importance to minimize environmental pollution and fuel oil consumption. Together with certain non-governmental organizations and media concerns about environmental protection, the International Maritime Organization (IMO) has been strict on controlling undesirable effects on the environment and, consequently, forcing shipping companies to minimize their emissions. Besides, today’s highly advanced technology companies over the world have developed various innovative systems that can be utilized to minimize carbon emission, thus giving assurance to relevant investors that their investments are most likely to turn out well with a considerable financial gain in the short or long term. Despite all such favorable developments, in a general look, shipping companies seem reluctant in making use of technologies providing efficiency in energy consumption. This reluctance has eventually brought about the term “Energy Efficiency Gap”. This research conducts a questionnaire, created by Acciaro et al. [1], among the shipping companies in Turkey. 20 respondent companies, who represent 26 percent of the Turkish owned merchant marine fleet of over 1000 gross tonnage in terms of deadweight cargo capacity, participated in the research. The Pearson correlation analysis was used, and interpretations were made according to the obtained statistical values. The aim of the research was to identify reasons and points restraining the use of new technologies regarding energy efficiency, as well as to develop proposals for the innovators in this field about how to overcome this handicap concerning technical and managerial aspects of gaining energy efficiency.
Źródło:
Polish Maritime Research; 2019, 3; 98-106
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessing the Intangibles: Socioeconomic Benefits of Improving Energy Efficiency
Ocena wartości niematerialnych: społeczno-ekonomiczne korzyści z poprawy efektywności energetycznej
Autorzy:
Bartoszewicz-Burczy, H.
Baumgartner, R. J.
Fawcett, T.
Fritz, M. M. C.
Killip, G.
Valladolid, T.
Violi, C.
Powiązania:
https://bibliotekanauki.pl/articles/952958.pdf
Data publikacji:
2018
Wydawca:
ENERGA
Tematy:
efektywność energetyczna
korzyść
energy efficiency
multi benefits of energy efficiency
Opis:
Poprawa efektywności energetycznej może przynieść wiele korzyści dla gospodarki i społeczeństwa. Jednak programy efektywności energetycznej są często oceniane jedynie na podstawie oszczędności energii bez uwzględnienia niematerialnych korzyści społeczno-ekonomicznych. W rezultacie całkowita wartość korzyści efektywności energetycznej w gospodarkach krajowych i w ujęciu globalnym jest znacząco zaniżona. Zasadniczym celem artykułu jest wskazanie i – na podstawie przedstawionych studiów przypadku – analiza wielorakich korzyści wynikających z poprawy efektywności energetycznej.
Poprawa efektywności energetycznej może przynieść wiele korzyści dla gospodarki i społeczeństwa. Jednak programy efektywności energetycznej są często oceniane jedynie na podstawie oszczędności energii bez uwzględnienia niematerialnych korzyści społeczno-ekonomicznych. W rezultacie całkowita wartość korzyści efektywności energetycznej w gospodarkach krajowych i w ujęciu globalnym jest znacząco zaniżona. Zasadniczym celem artykułu jest wskazanie i – na podstawie przedstawionych studiów przypadku – analiza wielorakich korzyści wynikających z poprawy efektywności energetycznej.
Źródło:
Acta Energetica; 2018, 4; 99-104
2300-3022
Pojawia się w:
Acta Energetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The energy efficiency gap in Turkish maritime transportation
Autorzy:
Konur, Olgun
Bayraktar, Murat
Pamik, Murat
Kuleyin, Barış
Nuran, Mustafa
Powiązania:
https://bibliotekanauki.pl/articles/962688.pdf
Data publikacji:
2019
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
energy efficiency technologies
carbon emission
energy efficiency gap
maritime transportation
Opis:
The Turkish Merchant Shipping Industry has recently witnessed an increasing awareness of the importance to minimize environmental pollution and fuel oil consumption. Together with certain non-governmental organizations and media concerns about environmental protection, the International Maritime Organization (IMO) has been strict on controlling undesirable effects on the environment and, consequently, forcing shipping companies to minimize their emissions. Besides, today’s highly advanced technology companies over the world have developed various innovative systems that can be utilized to minimize carbon emission, thus giving assurance to relevant investors that their investments are most likely to turn out well with a considerable financial gain in the short or long term. Despite all such favorable developments, in a general look, shipping companies seem reluctant in making use of technologies providing efficiency in energy consumption. This reluctance has eventually brought about the term “Energy Efficiency Gap”. This research conducts a questionnaire, created by Acciaro et al. [1], among the shipping companies in Turkey. 20 respondent companies, who represent 26 percent of the Turkish owned merchant marine fleet of over 1000 gross tonnage in terms of deadweight cargo capacity, participated in the research. The Pearson correlation analysis was used, and interpretations were made according to the obtained statistical values. The aim of the research was to identify reasons and points restraining the use of new technologies regarding energy efficiency, as well as to develop proposals for the innovators in this field about how to overcome this handicap concerning technical and managerial aspects of gaining energy efficiency.
Źródło:
Polish Maritime Research; 2019, 3; 98-106
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The energy efficiency gap in Turkish maritime transportation
Autorzy:
Konur, Olgun
Bayraktar, Murat
Pamik, Murat
Kuleyin, Barış
Nuran, Mustafa
Powiązania:
https://bibliotekanauki.pl/articles/962694.pdf
Data publikacji:
2019
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
energy efficiency gap
maritime transportation
energy efficiency technologies
carbon emission
Opis:
The Turkish Merchant Shipping Industry has recently witnessed an increasing awareness of the importance to minimize environmental pollution and fuel oil consumption. Together with certain non-governmental organizations and media concerns about environmental protection, the International Maritime Organization (IMO) has been strict on controlling undesirable effects on the environment and, consequently, forcing shipping companies to minimize their emissions. Besides, today’s highly advanced technology companies over the world have developed various innovative systems that can be utilized to minimize carbon emission, thus giving assurance to relevant investors that their investments are most likely to turn out well with a considerable financial gain in the short or long term. Despite all such favorable developments, in a general look, shipping companies seem reluctant in making use of technologies providing efficiency in energy consumption. This reluctance has eventually brought about the term “Energy Efficiency Gap”. This research conducts a questionnaire, created by Acciaro et al. [1], among the shipping companies in Turkey. 20 respondent companies, who represent 26 percent of the Turkish owned merchant marine fleet of over 1000 gross tonnage in terms of deadweight cargo capacity, participated in the research. The Pearson correlation analysis was used, and interpretations were made according to the obtained statistical values. The aim of the research was to identify reasons and points restraining the use of new technologies regarding energy efficiency, as well as to develop proposals for the innovators in this field about how to overcome this handicap concerning technical and managerial aspects of gaining energy efficiency.
Źródło:
Polish Maritime Research; 2019, 3; 98-106
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wskaźnik eksploatacyjnej efektywności energetycznej jako element planowania przebiegu rejsu jednostki rybackiej
Energy efficiency operational indicator as an element for planning the trip of fishin vessel
Autorzy:
Głowacki, B.
Powiązania:
https://bibliotekanauki.pl/articles/112592.pdf
Data publikacji:
2017
Wydawca:
STE GROUP
Tematy:
zarządzanie efektywnością energetyczną
monitorowanie efektywności energetycznej
audyt efektywności energetycznej
energy efficiency management
energy efficiency monitoring
energy efficiency audits
Opis:
Wykorzystanie wskaźnika eksploatacyjnej efektywności energetycznej EEOI do analizy efektywności eksploatacyjnej i planowania przebiegu rejsu jednostek rybackich to rozwiązanie innowacyjne. W artykule przedstawiono autorskie oprogramowania dedykowanego dla tego typu jednostek, pozwalające na zbieranie w trybie on-line danych opisujących przebieg rejsu i pojedynczych działań wykonywanych przez jednostkę. Odpowiednia interpretacja i korelacja parametrów techniczno-eksploatacyjnych z wykorzystaniem programu komputerowego, umożliwi uzyskanie danych pozwalających na ocenę efektywności eksploatacyjnej, z uwzględnieniem stanu technicznego jednostki w dowolnych warunkach eksploatacyjnych. Pozwoli również na planowanie rejsu.
The use of the energy efficiency operational index to analyse the operational efficiency and planning of fishing vessels trips is an innovative solution. This article presents authoring software dedicated to this type of vessel, allowing online collection of data describing the course of the trip and individual activities performed by the fishing vessel. Correct interpretation and correlation of technical and operational parameters with the use of this program will allow to obtain data allowing to evaluate the energy efficiency, taking into account technical condition of the unit under any operating conditions. It will also allow you to plan your trip.
Źródło:
Systemy Wspomagania w Inżynierii Produkcji; 2017, 6, 6; 91-101
2391-9361
Pojawia się w:
Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluating an inland waterway cargo vessel’s energy efficiency indices
Autorzy:
Kalajdžić, Milan
Vasilev, Matija
Momčilović, Nikola
Powiązania:
https://bibliotekanauki.pl/articles/32898591.pdf
Data publikacji:
2022
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
inland vessels
energy efficiency
energy efficiency of inland vessels
EEXI
EEDI
Opis:
Although the International Maritime Organization (IMO) introduced the energy efficiency requirements for ships more than a decade ago, to date, inland navigation has not been affected by corresponding regulations at all. Therefore, inland waterway vessels are left with no mandatory requirements that could push their technology into more energy efficient design. Fortunately, there are certain pioneering attempts to define energy efficiency criteria for inland vessels. This paper tries to gather and provide a review of such methods. Moreover, a typical Danube cargo inland vessel’s data are used to evaluate their current energy efficiency levels with respect to provisional criteria. Consequently, two methods are found and used here. They are both based on IMO’s energy efficiency concept but modified for the inland waterway vessels. The methods delivered a significant difference in applicability and were difficult to compare. Moreover, shallow and deep-water effects are explored in the same regard but provided unsound conclusions. The final results displayed discrepancies in energy efficiency levels for the same vessels and so the methodology should be improved and harmonised, if it is to be introduced as mandatory for inland waterway vessels. The analysis provided a glimpse into the current condition of the traditional design of the Danube inland fleet, with respect to the emerging energy efficiency policies.
Źródło:
Polish Maritime Research; 2022, 2; 27-34
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy Efficiency Design Index as a new criterion in ship design
Autorzy:
Szelangiewicz, T.
Żelazny, K.
Powiązania:
https://bibliotekanauki.pl/articles/359076.pdf
Data publikacji:
2012
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
Energy Efficiency Design Index
International Energy Efficiency Certificate for the ship
Opis:
Since 2013 Energy Efficiency Design Index (EEDI) for new ships will be enforced. Ships meeting the CO2 emission standards will be granted energy certificate required for their exploitation. The paper presents EEDI in the current form, the certification procedure, reduced CO2 emission planned for coming years, as well as potential for further EEDI value reduction.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 32 (104) z. 1; 97-101
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ISEE - Intelligent System of Energy Efficiency
Autorzy:
Ziąbka, Tomasz
Grzebielec, Andrzej
Rusowicz, Artur
Powiązania:
https://bibliotekanauki.pl/articles/132041.pdf
Data publikacji:
2020
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
energy efficiency
control system
Opis:
Increasing energy efficiency is one of the priorities of the European 3x20 climate and enery package. The ISEE system - Intelligent Energy Efficiency Control is a response to the growing interest in energy saving. It is also closely related to energy efficiency and reduction of greenhouse gas emissions. The presented system also allows connecting renewable energy sources to the analyzed facilities. It is intended for a wide range of recipients.
Źródło:
Modern Engineering; 2020, 1; 6-10
2450-5501
Pojawia się w:
Modern Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy efficiency improvement in SMEs – analysis of a pilot programme of energy efficiency management in Poland
Autorzy:
Korczak, K.
Powiązania:
https://bibliotekanauki.pl/articles/106047.pdf
Data publikacji:
2016
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
energy efficiency
energy efficiency measures
energy efficiency programme for SMEs
energooszczędność
miary efektywności energetycznej
program efektywności energetycznej dla MŚP
Opis:
This article includes an overview of methods of energy efficiency improvement in small and medium-sized enterprises (SMEs) applied in Poland. It describes the experience of the implementation of energy efficiency programme in Poland, introduced in 2013 by Polish Agency for Enterprise Development’s. Evaluation of the programme shows that energy savings were over 6-times higher than expected by the programme’s author before its implementation and amounted to 53 TJ. Financial savings were almost 5-times higher than expected and amounted to PLN 7.3m. Guidelines for decision makers which would be responsible for the development of similar programmes in the future are presented.
Źródło:
Acta Innovations; 2016, 21; 60-70
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application the results of energy efficiency audit planning and implementation of fishing vessels modernisation
Autorzy:
Szczepanek, M.
Rajewski, P.
Barta, D.
Powiązania:
https://bibliotekanauki.pl/articles/27315959.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
fishing cutters
energy audit
energy efficiency
Opis:
The Energy Efficiency Design Index (EEDI) became mandatory for new ships as well as the Ship Energy Efficiency Management Plan (SEEMP) for all ships due to the MEPC 62 (July 2011) along with the adoption of amendments to MARPOL Annex VI by the Parties to the MARPOL Annex VI. This was the first legally binding climate change treaty to be adopted since the Kyoto Protocol. The Ship Energy Efficiency Management Plan (SEEMP), which has been obligatory since 2013, did not to cover fishing cutters but triggered the implementation of energy efficiency audits due to fishing limits, high fuel prices, and free freight market. A research team of the Maritime University of Szczecin conducted energy efficiency audits on several fishing vessels operated on the Baltic Sea and provided the results to the shipowners. On their grounds, the shipowners started seeking methods to reduce energy consumption. They began modernizing the vessels using the information collected in the reports on energy audits. Usually, the modernization process is performed in severa stages. Apart from energy recovery installations, fishing vessels were furnished with the latest technologies aimed at the reduction of energy consumption and at making ships greener. The paper presents results of the said process at the selected fishing cutters operating on the Baltic Sea. The paper includes also the recommendations on the directions of the following stages of the audits.
Źródło:
New Trends in Production Engineering; 2018, 1, 1; 567-572
2545-2843
Pojawia się w:
New Trends in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air conditioning systems in data center
Autorzy:
Grzebielec, Andrzej
Kłos, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/132006.pdf
Data publikacji:
2020
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
air conditioning
datacenter
energy efficiency
Opis:
Data center cooling is a specific issue. High heat flux density and maintaining rigorous operating conditions require suitable cold from the cooling system. The article lists the most common methods of data center cooling and classification of technological systems in data center facilities.
Źródło:
Modern Engineering; 2020, 1; 26-37
2450-5501
Pojawia się w:
Modern Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental study of a sorption cold storage supporting the air conditioning system
Autorzy:
Grzebielec, Andrzej
Szelągowski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/132075.pdf
Data publikacji:
2019
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
adsorption
energy efficiency
cold storage
Opis:
Techniques related to elimination of environmental pollution are divided into two main trends. These are primary and secondary solutions. Primary solutions are based on the creation / selection of technologies that do not emit pollutants, secondary solutions are used in the situation that pollutants are already generated. Elimination is made by selected technological processes. When using residential, office or industrial buildings, emissions are primarily associated with the use of energy carriers such as electricity, heat or cold. During electricity production, pollution is related mostly to the atmosphere degradation. Thus, any solution that reduces energy consumption or improves the energy efficiency of buildings is the primary method of environment protection. This article proposes and investigates an idea of cold storage system based on an adsorbent bed (silica gel), which aims to reduce the energy consumption of the domestic air conditioning system. As a result of experimental research, it was shown that for a building with a volume of 1000m 3 and multiples of air exchanges at 0.5 level, a silica gel bed with a volume of 1.63 m3 is required in order to continuously unload the air conditioning system for 8 hours (while outside air temperature exceeding 25oC).
Źródło:
Modern Engineering; 2019, 1; 10-15
2450-5501
Pojawia się w:
Modern Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Energy-Efficient Proactive Routing Scheme for MANET : Game Theoretical Approach of Forwarding with Selfish Nodes
Autorzy:
Sahnoun, A.
Habbani, A.
El Abbadi, J.
Powiązania:
https://bibliotekanauki.pl/articles/963872.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
game theory
MANETs
energy efficiency
Opis:
In Mobile Ad-hoc Networks, nodes exchange packets with each other using intermediate nodes as relays. Since nodes in MANETs are battery powered, energy conservation is a crucial issue. Accepting relay all request may not be in the best interest of a node. But if many nodes prefer not to consume energy in relaying packets on behalf of others, the overall performance of routing in network will be influenced. In this paper we address the energyefficient routing problem in MANETs with selfish nodes. We modeled this problem as a game-theoretic constraint optimization; we defined the utility of each node as a weighted difference between a performance metric and some transmission costs. A motivate mechanism is proposed in order to induce nodes to forwarding cooperation. Each node independently implements the optimal equilibrium strategy under the given constraints. Simulation results by NS3 simulator show that our proposed approach can improve system performance in network lifetime and packet delivery ratio.
Źródło:
International Journal of Electronics and Telecommunications; 2017, 63, 4; 399-404
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the influence of the primary energy factor of hydropower plants in the methodology for assessing the energy performance of buildings
Autorzy:
Tamašauskas, Rokas
Šadauskienė, Jolanta
Šadauskaitė, Monika
Powiązania:
https://bibliotekanauki.pl/chapters/31234003.pdf
Data publikacji:
2020
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
primary energy
renewable energy
hydropower
energy efficiency
Opis:
There is currently no common or standardized procedure for certification of the energy performance of buildings, as each EU Member State takes into account the specificities of its own construction sector when implementing the provisions of Directive 2010/31/EU. This usually depends on two features: the purpose of the building and the climate. Therefore, the purpose of this paper is to evaluate the influence of the hydropower primary energy factor for assessing the energy performance of buildings. For this purpose, non-renewable primary energy factor values were analyzed regarding actual energy production and consumption data from 19 Lithuanian hydroelectric plants. The results of the studies show that the average value of the non-renewable primary energy factor of hydropower plants is 0.059.
Źródło:
Innovations – Sustainability – Modernity – Openness. Energy; 67-76
9788366391291
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kumulacja przedsięwzięć służących poprawie efektywności energetycznej realizowanych przez niezależne podmioty a białe certyfikaty w świetle przepisów nowej ustawy o efektywności energetycznej
Accumulation of energy efficiency improvement measures, realized by independent entities, and white certificates in light of the provisions of the new act on energy efficiency
Autorzy:
Superson-Polowiec, B.
Jurzyk, N.
Powiązania:
https://bibliotekanauki.pl/articles/394088.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
efektywność energetyczna
kumulacja przedsięwzięć służących poprawie efektywności energetycznej
świadectwo efektywności energetycznej
energy efficiency
cumulation of energy efficiency improvement measures
certificate of energy efficiency
Opis:
Zwiększenie efektywności energetycznej stanowi obecnie jeden z głównych celów polskiej i unijnej polityki energetycznej. Uzyskaniu oczekiwanej oszczędności energii służyć mają liczne projekty o zasięgu krajowym, jak i międzynarodowym, wspierające inicjatywę podejmowania przedsięwzięć proefektywnościowych. Poprawa efektywności energetycznej w dużej mierze uzależniona jest od aktywności odbiorców końcowych. Współczesne uwarunkowania rynkowe coraz częściej wymuszają konieczność wprowadzania innowacyjnych rozwiązań, które pozwalają na osiągnięcie założonych celów. Za takimi rozwiązaniami powinny nadążać regulacje prawne. Autorki artykułu podejmują próbę analizy zagadnienia związanego z funkcjonującym od paru lat w Polsce systemem wsparcia efektywności energetycznej. 1 października 2016 r. wejdą w życie przepisy nowej ustawy o efektywności energetycznej, zgodnie z którą potwierdzeniem planowanej do zaoszczędzenia ilości energii finalnej wynikającej z przedsięwzięcia lub przedsięwzięć tego samego rodzaju służących poprawie efektywności energetycznej jest świadectwo efektywności energetycznej. Świadectwo efektywności energetycznej nie przysługuje jednak dla przedsięwzięcia lub przedsięwzięć tego samego rodzaju, jeżeli w wyniku ich realizacji uzyskuje się oszczędność energii w ilości mniejszej niż 10 ton oleju ekwiwalentnego średnio w ciągu roku. Niniejszy artykuł ma na celu udzielenie odpowiedzi na pytanie, czy na gruncie krajowych i unijnych regulacji prawnych możliwe jest przyznanie świadectwa efektywności energetycznej podmiotowi reprezentującemu kilka niezależnych podmiotów, u których realizowane są przedsięwzięcia służące poprawie efektywności energetycznej, przy założeniu, że dopiero suma oszczędności u pojedynczych, niezależnych podmiotów przewyższa wymóg ilościowy określony na poziomie 10 ton oleju ekwiwalentnego średnio w ciągu roku.
Increasing energy efficiency is now one of the main objectives of the Polish and EU energy policy. To obtain the expected energy saving numerous projects supporting the initiative of making pro-efficiency projects are implemented at the national and international level. Improving energy efficiency largely depends on the activity of the end users. Today’s market conditions are increasingly forcing the necessity of introducing innovative solutions that allow the expected goals to be achieved. Regulations should follow such solutions. The authors of the article attempt to analyze issues related to the energy efficiency support system functioning for the past several years in Poland. On October 1, 2016 the new Act on Energy Efficiency will enter into force. Under this Act, energy efficiency certificate will constitute the confirmation of the planned amount of final energy to be saved that results from the venture or ventures of the same kind used to improve energy efficiency. An energy efficiency certificate will not be issued for the venture or ventures of the same kind if the amount of the energy saved due to their implementation is less than the yearly average of 10 tons of the oil equivalent. This article aims to answer the question of whether, under national and EU legislation, energy efficiency certificates may be granted to an entity representing several independent entities, which are implementing energy efficiency ventures, assuming that only the sum of the savings of each independent entity exceeds the quantity requirement determined as the yearly average of 10 tons of the oil equivalent?
Źródło:
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN; 2016, 95; 81-92
2080-0819
Pojawia się w:
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energoeffektivnost’ zdanij kak faktor biosfernoj sovmestimosti gorodov
Energy efficiency buildings as a factor of the compatibility biosphere of the cities
Autorzy:
Sergejcuk, O.
Powiązania:
https://bibliotekanauki.pl/articles/2065096.pdf
Data publikacji:
2012
Wydawca:
Politechnika Częstochowska
Tematy:
biosphere-compatible buildings
energy efficiency
renewable energy
Opis:
Rassmotreny principy proektirovania biosferosovmestimyh zdanij. Eti principy vklucaut optimizaciu ekspluatacii zdanij, vybora stroitel’nyh materialov, stepen’ ispol’zovania vozobnovlaemyh istocnikov energii, stepen’ osteklenia. Stroitel’nye normy i pravila v stranah SNG, analiziruutsa po otnoseniu k proektirovaniu zdanij v biosferosovmestimyh gorodah.
Principles of creating of biosphere-compatible buildings are considered. These principles include the optimization of service life of buildings, choice of structural materials, renewable energy, and level of glazing of buildings. Building regulations of the CIS countries are analyzed with respect to design of buildings in biosphere-compatible cities.
Źródło:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2012, 1 (9); 111--118
2299-8535
2544-963X
Pojawia się w:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Specific energy consumption – the comparison of belt conveyors
Autorzy:
Suchorab, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/89009.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
belt conveyor
energy efficiency
specific energy consumption
Opis:
Belt conveyors (BCs), because of their high efficiency, are widely used for bulk material handling in the mining industry. However, due to the high level of conveyors' energy consumption, the belt conveyor systems generate a large part of mining costs. Therefore, the current solutions mostly focus on implementing new management strategies, which find energy consumption as a key indicator in designing belt conveyor systems. Belt conveyor equipment selection, conveying systems, operation, applied mining technology are considered to be areas where improvement of belt conveyors' energy efficiency may be achieved. Moreover, they can be used to implement novel standards for BC equipment and the proposal of defining new quality standards and creating BCs' classification has been already outlined. The main idea of the paper is to compare the values of specific energy consumption (SEC) of BCs with regard to the inclination angle of a conveyor route which results from technological needs. The multiple regression is used to find a relationship between two basic independent variables – the volume of transported material and conveyor's inclination angle – and a dependent variable (SEC). The procedure enables to determine the value of SEC which is required for lifting the material. Presented results prove that the value of SEC required for lifting the material is crucial for the interpretation of the SEC value when it comes to energy efficiency comparison.
Źródło:
Mining Science; 2019, 26; 263-274
2300-9586
2353-5423
Pojawia się w:
Mining Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of energy efficiency in Poland in 2008-2018 in the context of sustainable development
Autorzy:
Pacana, Andrzej
Czerwińska, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/1818431.pdf
Data publikacji:
2020
Wydawca:
Instytut Polityki Energetycznej im. Ignacego Łukasiewicza
Tematy:
energy efficiency
ODEX index
energy management
energy production
Opis:
Analysing the Polish energy sector, changes in the market can be seen as a consequence of growing role of EU regulations, which increasingly affect the functionality of national and local markets. As a general rule, the basis of regulation is set out in the adopted strategy papers, indicating developmental desires within the energy market. The energy policies that are taken, which define the implementation measures, should guarantee the secu-rity of investment in the long term. The increase in energy efficiency generates significant financial savings while generating benefits for the environment, industry, transport or households. As part of monitoring the level of en-ergy efficiency, the ODYSSEE-MURE programme has developed the ODEX indicator. The aim of thestudy was to analyze the level of efficiency in Poland in general and with an indication of three main sectors, as well as the level of Polish energy savings in the years 2008-2018. The research showed that the increase in energy efficiency of the Polish economy in the period under consideration is systematically increasing. Overall, between 2008 and 2018, the average rate of energy efficiency improvement was 1. 7% per year. On the other hand, savings achieved in 2018 within the indicated sectors amounted to 0.10 Mtoe.
Źródło:
Energy Policy Studies; 2020, 2 (6); 29--42
2545-0859
Pojawia się w:
Energy Policy Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of energy efficiency in Poland in 2008-2018 in the context of sustainable development
Autorzy:
Pacana, Andrzej
Czerwińska, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/1818438.pdf
Data publikacji:
2020
Wydawca:
Instytut Polityki Energetycznej im. Ignacego Łukasiewicza
Tematy:
energy efficiency
ODEX index
energy management
energy production
Opis:
Analysing the Polish energy sector, changes in the market can be seen as a consequence of growing role of EU regulations, which increasingly affect the functionality of national and local markets. As a general rule, the basis of regulation is set out in the adopted strategy papers, indicating developmental desires within the energy market. The energy policies that are taken, which define the implementation measures, should guarantee the secu-rity of investment in the long term. The increase in energy efficiency generates significant financial savings while generating benefits for the environment, industry, transport or households. As part of monitoring the level of en-ergy efficiency, the ODYSSEE-MURE programme has developed the ODEX indicator. The aim of thestudy was to analyze the level of efficiency in Poland in general and with an indication of three main sectors, as well as the level of Polish energy savings in the years 2008-2018. The research showed that the increase in energy efficiency of the Polish economy in the period under consideration is systematically increasing. Overall, between 2008 and 2018, the average rate of energy efficiency improvement was 1. 7% per year. On the other hand, savings achieved in 2018 within the indicated sectors amounted to 0.10 Mtoe.
Źródło:
Energy Policy Studies; 2020, 2 (6); 29--42
2545-0859
Pojawia się w:
Energy Policy Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The energy efficiency monitoring of a refrigeration unit
Autorzy:
Jaszczak, S.
Łokietek, T.
Powiązania:
https://bibliotekanauki.pl/articles/114062.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
refrigeration unit
SCADA system
energy efficiency
Opis:
In the paper, a monitoring system of a refrigeration unit is presented. This system consists of several measurement elements e.g. (pressure, temperature, energy, etc. sensors) connected using a serial RS485 network. A measurement level is a source of data for both SCADA environment and a PLC controller which are essential elements of the whole control system. The first stage of the study was related to the selection of measurement devices and a construction of a serial network. The authors also described how to link a serial 485 network with a PLC controller and how to introduce it into TCP/IP network. In the first part of the paper, there is presented a refrigeration unit as a subject of the monitoring. Then the authors describe a theoretical background needed for the energy efficiency calculation. After that the system structure with selected details about hardware integration and SCADA software implementation is presented. The final part contains selected real time experiments to show typical working modes of the refrigeration unit and to prove the efficiency of the developed monitoring system.
Źródło:
Measurement Automation Monitoring; 2016, 62, 6; 202-205
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy efficiency in logistics
Autorzy:
Humpl, D.
Powiązania:
https://bibliotekanauki.pl/articles/409473.pdf
Data publikacji:
2011
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
logistics
energy efficiency
storage
handling
transport
Opis:
The paper contributed describes potentials for enhancing energy efficiency in logistics. Modern logistics management is able to increase transport efficiency by means of innovative concepts. Measures for enhancing energy efficiency in logistics range from political governance to technical approaches throughout the whole logistics chain. Various options will be discussed and a future outlook will be given.
Źródło:
Research in Logistics & Production; 2011, 1, 1; 17-28
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy losses in the hydraulic rotational motor definitions and relations for evaluation of the efficiency of motor and hydrostatic drive
Autorzy:
Paszota, Z.
Powiązania:
https://bibliotekanauki.pl/articles/259279.pdf
Data publikacji:
2010
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
hydrostatic drive
hydraulic motor
energy efficiency
Opis:
The evaluation methods of energy losses and efficiency of the hydraulic rotational motors for the hydrostatic drives, used so far in the scientific research and in the industrial practice, give wrong results because the parameters that the losses and efficiencies are a function of are themselves dependent on those losses. The aim of the paper is to define the motor operating parameters, developed powers, energy losses and efficiencies and also to show the respective relations. Conclusions are drawn, based on the analyses of presented definitions and relations, on the motor energy investigations.
Źródło:
Polish Maritime Research; 2010, 2; 44-54
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical and mathematical models of the torque of mechanical losses in the pump used in a hydrostatic drive
Autorzy:
Paszota, Z.
Powiązania:
https://bibliotekanauki.pl/articles/260065.pdf
Data publikacji:
2011
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
hydrostatic drive
displacement pump
energy efficiency
Opis:
The paper presents theoretical and mathematical models of the torque of mechanical losses in the pump with theoretical (constant) capacity qPt per one shaft revolution (with constant theoretical working volume VPt) and geometrical (variable) capacity qPgv per one shaft revolution (with variable volume VPgv). The models may be used in the laboratory and simulation investigations of the pump energy efficiency and the hydrostatic driveefficiency.
Źródło:
Polish Maritime Research; 2011, 4; 28-35
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expert system on efficiency evaluation of continuous flow grain dryer
Autorzy:
Walczak, R.
Powiązania:
https://bibliotekanauki.pl/articles/92842.pdf
Data publikacji:
2006
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
energy efficiency
dryer
drying
expert system
Opis:
The purpose of the paper is to present a concept of energy efficiency and financial evaluation of counter flow dryer. Energy efficiency and many other efficiency indexes of the dryer and all additional devices like heater, heat exchangers, tubing and fans are calculated. Expert system provides also the financial evaluation of the investment. Many investments could be considered. The system provides the user with suggestions about the best dryer for him/her. Expert system also enables evaluation of energy saving improvements. The energy savings for dryer installation sections are calculated. Cost savings are compared with investment value. The best energy saving project could be selected on the base of selection algorithm. Expert system could be used for existing and new-designed dryers.
Źródło:
Studia Informatica : systems and information technology; 2006, 1(7); 179-193
1731-2264
Pojawia się w:
Studia Informatica : systems and information technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods of energy efficiency improvement by modernisation of hydraulic installations at a fishing cutter at the baltic sea
Autorzy:
Szczepanek, M.
Barta, D.
Michalska-Pożoga, I.
Powiązania:
https://bibliotekanauki.pl/articles/27315958.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
fishing cutter
hydraulic installation
energy efficiency
Opis:
The Energy Efficiency Design Index (EEDI) became mandatory for new ships as well as the Ship Energy Efficiency Management Plan (SEEMP) for all ships due to the MEPC 62 (July 2011) along with the adoption of amendments to MARPOL Annex VI by the Parties to the MARPOL Annex VI. This was the first legally binding climate change treaty to be adopted since the Kyoto Protocol. The Ship Energy Efficiency Management Plan (SEEMP), which has been obligatory since 2013, did not to cover fishing cutters but triggered the implementation of energy efficiency audits due to fishing limits, high fuel prices, and free freight market. All the above caused that ship-owners started seeking ways for saving money and keep their business profitable. Apart from energy recovery installations, fishing vessels have been furnished with the latest technologies aimed at the reduction of energy consumption and at making ships greener. A research team of the Maritime University of Szczecin conducted energy efficiency audits on several fishing vessels operated on the Baltic Sea and stated that up to 40% of the energy is used during fishing operations by hydraulic devices installed at the fishing vessels. The paper presents the measurement results of energy consumption in typical operational states based on a selected fishing cutter operating at the Baltic Sea. The paper includes also the recommendations in terms modernization of hydraulic installations and the changes of control methods for devices with hydraulic drive. The calculations are also presented herein and they prove that it is possible to reduce energy consumption by a fishing cutter even by 20% while maintaining the unchanged operating parameters of the hydraulic devices.
Źródło:
New Trends in Production Engineering; 2018, 1, 1; 561-566
2545-2843
Pojawia się w:
New Trends in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Instrumenty poprawy efektywności energetycznej w Polsce
The instruments to improve energy efficiency in Poland
Autorzy:
Komorowska, A.
Mirowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/394702.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
efektywność energetyczna
instrumenty poprawy efektywności energetycznej
energia finalna
energy efficiency
instruments to improve energy efficiency
final energy
Opis:
Działania w kierunku poprawy efektywności energetycznej są zasadniczą częścią polityki zrównoważonego rozwoju państwa. Prowadzą one do racjonalizacji gospodarki surowcami energetycznymi oraz osiągnięcia oszczędności energii w łańcuchu przemian energetycznych (od wytwarzania aż do wykorzystania przez odbiorcę końcowego). W artykule przedstawiono bieżące instrumenty poprawy efektywności energetycznej stosowane w Polsce oraz zmiany, które zaproponowano w rządowym projekcie nowelizacji ustawy o efektywności energetycznej. Zarówno mechanizmy horyzontalne, jak i sektorowe będą miały istotny wpływ na osiągnięcie celów pakietu klimatyczno-energetycznego wyznaczonych przez Unię Europejską. W Polsce cele te są realizowane za pomocą projektów infrastrukturalnych (Program Operacyjny Infrastruktura i Środowisko 2014–2020), Inteligentnych Sieci Energetycznych, Projektów Transportowych oraz przedsięwzięć związanych z poprawą efektywności energetycznej w budynkach mieszkalnych i użyteczności publicznej. Na szczególną uwagę zasługują środki stosowane w przemyśle i sektorze MŚP.
Every actions aimed at improving energy efficiency are an essential part of the country’s sustainable development policy. These actions lead to the rationalization of energy resources and to achieve energy savings in the energy conversion chain (from production to use by the end-user). The article presents the current instruments used to improve energy efficiency in Poland and the changes that have been proposed in the government draft amendment to the Energy Efficiency Act. Horizontal and sector mechanisms will have a significant impact on the achievement of the European Union (EU) energy and climate package targets for 2020. In Poland, the goals are carried out through infrastructure projects (The Operational Programme of Infrastructure and Environment 2014–2020), Smart Energy Networks, Transport Projects and Projects related to the improvement of energy efficiency in residential and public buildings. The measures used in the industry and the SME sector are particularly noteworthy.
Źródło:
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN; 2016, 92; 297-306
2080-0819
Pojawia się w:
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza eksploatacyjnego wskaźnika efektywności energetycznej statku w aspekcie ekonomicznym i ekologicznym
Analysis of the Energy Efficiency Operational Indicator in Economic and Ecological Aspect
Autorzy:
Wysocki, J.
Powiązania:
https://bibliotekanauki.pl/articles/341522.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Morski w Gdyni. Wydawnictwo Uniwersytetu Morskiego w Gdyni
Tematy:
eksploatacyjny wskaźnik efektywności energetycznej
konstrukcyjny wskaźnik efektywności energetycznej
plan zarządzania efektywnością energetyczną statku
energy efficiency operational indicator
energy efficiency design index
energy efficiency management plan
Opis:
Artykuł przedstawia wybrane narzędzia do poprawy i oszacowania efektywności energetycznej statku oraz analizę eksploatacyjnego wskaźnika efektywności energetycznej statku (EEOI).Głównym zadaniem rozpatrywanych narzędzi jest ograniczenie emisji gazów cieplarnianych, a w szczególności dwutlenku węgla, do atmosfery podczas eksploatacji statku. Celem przeprowadzonej analizy było wykazanie możliwości stosowania EEOI w czasie eksploatacji statku.
This article presents selected tools for improving and estimating vessel energy efficiency and analysis of energy efficiency operational indicator EEOI. The main task of the tools under consideration is to reduce greenhouse gases emissions and, in particular, emission into the atmosphere during ship operation. The purpose of the study was to demonstrate the applicability of the EEOI during ship operation.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Gdyni; 2017, 100; 200-213
1644-1818
2451-2486
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Gdyni
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approach for the Developmentof Energy-Efficient Machine Tools
Autorzy:
Neugebauer, R.
Frieß, U.
Paetzold, J.
Wabner, M.
Richter, M.
Powiązania:
https://bibliotekanauki.pl/articles/971148.pdf
Data publikacji:
2009
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
energy efficiency
machine tool
product development
Opis:
The life cycle costs of machine tools are much higher determined by their energy costs than what is often roughly assessed. The growing demand for consumer goods and especially possibilities of individual mobility in major parts of the developing world - e. g. Asia - will lead to serious problems in meeting the demand for an abundant energy supply and will increase the cost for energy further in the near-term future. Harder efforts are necessary to "reach more with less" - using less energy than today to reach a defined goal in production. The paper deals with a methodology to design machine tools with a high "energy efficiency". Based on the property-driven design methodology by Weber a systematic approach is shown to enhance the design of machine tools. Energy efficiency is a new additional and central property in the design process. To attain these given properties characterisations are determined by the engineer to fulfil these properties. On the developing-path the characterisations are defined in more detail step by step, and after each step it is assured if the accounted properties where met by the defined characteristics. The approach is to first analyse existing machine tools and therefore define prior energy consumers. The identified major consumers are afterwards systematically addressed to reduce their energy consumption. The result is an enhanced machine tool with state-of-the-art energy usage. This addresses the objectives of the EU and takes pressure of the energy supply by reducing the energy demand in production.
Źródło:
Journal of Machine Engineering; 2009, 9, 2; 51-62
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical evaluation of impact factors to the energy consumption of machine tools
Autorzy:
Wittstock, V.
Kolouch, M.
Paetzold, J.
Powiązania:
https://bibliotekanauki.pl/articles/100171.pdf
Data publikacji:
2013
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
energy efficiency
machine tool
statistical analyses
Opis:
In this paper, a method for the evaluation of the energy consumption of machine tools is presented. For this purpose, the energy consumption of various machine tools has been investigated experimentally. In order to increase the evaluation basis, measured values of energy consumption were also taken from literature. The evaluation contains an analysis of various factors concerning the productivity and the size of the investigated machine tools. This analysis is capable of detecting the impact factors to increase the energy-efficiency of production systems. It can further reduce the effort required for data acquisition when various machine tools are compared.
Źródło:
Journal of Machine Engineering; 2013, 13, 2; 79-91
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy Efficiency in 5G Communications – Conventional to Machine Learning Approaches
Autorzy:
Shahid, Muhammad Khalil
Debretsion, Filmon
Eyob, Aman
Ahmed, Irfan
Faisal, Tarig
Powiązania:
https://bibliotekanauki.pl/articles/1839308.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
5G
energy efficiency
wireless networks
Opis:
Demand for wireless and mobile data is increasing along with development of virtual reality (VR), augmented reality (AR), mixed reality (MR), and extended reality (ER) applications. In order to handle ultra-high data exchange rates while offering low latency levels, fifth generation (5G) networks have been proposed. Energy efficiency is one of the key objectives of 5G networks. The notion is defined as the ratio of throughput and total power consumption, and is measured using the number of transmission bits per Joule. In this paper, we review state-of-the-art techniques ensuring good energy efficiency in 5G wireless networks. We cover the base-station on/off technique, simultaneous wireless information and power transfer, small cells, coexistence of long term evolution (LTE) and 5G, signal processing algorithms, and the latest machine learning techniques. Finally, a comparison of a few recent research papers focusing on energy-efficient hybrid beamforming designs in massive multiple-input multiple-output (MIMO) systems is presented. Results show that machine learningbased designs may replace best performing conventional techniques thanks to a reduced complexity machine learning encoder.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 4; 1-9
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficiency analysis in the design of walking machines
Autorzy:
Zielińska, T.
Powiązania:
https://bibliotekanauki.pl/articles/281568.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
energy efficiency
walking machines
design methods
Opis:
The problem of energy efficiency in the design of walking machine is discussed in this paper. Attention is paid to the calculation of motor powers, gear ratios and to the choice of energetically efficient leg configuration. The motor power is evaluated bassing on the knowledge about the range of reaction forces during the hexapod movement, assuming that the body moves at the constant velocity, maintaining the heigt of the centre of gravity above the ground what is expected of hexapods. The results presented were applied to the walking machine being currently built.
Analiza efektywności w projektowaniu maszyn kroczących. W artykule przedstawiono problem efektywności energetycznej, jaki musi być uwzględniony przy projektowaniu maszyny kroczącej. Uwagę poświęcono zagadnieniu doboru mocy silników, doboru przekładni oraz wyborowi energetycznie efektywnej konfoguracji nóg. Moc silników została wyznaczona na podstawie znajomości rozkładu sił reakcji w czasie chodu maszyny kroczącej, przy ruchu ze stałą prędkością i przy stałej wysokości środka ciężkości maszyny nad podłożem. Przyjęte założenia są typowe dlachodu maszyn sześcionożnych. Omówione wyniki zostały zastosowane przy projektowaniu aktualnie budowanej maszyny kroczącej
Źródło:
Journal of Theoretical and Applied Mechanics; 2000, 38, 3; 693-708
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical and mathematical models of the torque of mechanical losses in a hydraulic rotational motor for hydrostatic drive
Autorzy:
Paszota, Z.
Powiązania:
https://bibliotekanauki.pl/articles/258728.pdf
Data publikacji:
2010
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
hydrostatic drive
hydraulic motor
energy efficiency
Opis:
The paper presents theoretical and mathematical models of the torque of mechanical losses in a hydraulic rotational motor with constant capacity qMt per one shaft revolution (with constant theoretical working volume VMt) and with variable capacity qMgv = bM qMt per one shaft revolution (with variable geometrical working volume VMgv). The models are to be used in the laboratory and simulation investigations of motor energy losses aimed at evaluation of the motor energy efficiency and hydrostatic drive efficiency.
Źródło:
Polish Maritime Research; 2010, 3; 18-25
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy efficiency of a biofuel production system
Autorzy:
Wasiak, A.
Orynycz, O.
Powiązania:
https://bibliotekanauki.pl/articles/406826.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy efficiency
EROEI
biofuels
production systems
Opis:
Manufacturing engineering is supposed to provide analyses related to various aspects of manufacturing and production in order to maximise technological, energy, and economic gains in relevant production processes. The present paper gives a recapitulation of several publications by present authors, presenting considerations of the energy efficiency of biofuel production. The energy efficiency is understood as the ratio of energy obtained from biofuels produced basing on crops from a particular area to the energy required to satisfy needs of all subsidiary processes assuring correct functioning of the production system, starting from operations aimed to obtain agricultural crops, and ending with the conversion of the crops onto biofuels. Derived by the present authors, the mathematical model of energy efficiency of biofuel production is extended to a more general form, and applied to the analysis of quantitative relations between energy efficiency of sc. “energy plantations”, and further elements of biofuel production system converting harvested biomass into biofuel. Investigations are aimed towards the determination of the role of biomass as a source of energy.
Źródło:
Management and Production Engineering Review; 2017, 8, 1; 60-68
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Edukacja na rzecz efektywności energetycznej – przegląd wybranych programów
Energy efficiency education – a review of selected programs
Autorzy:
Pamuła, Anna
Powiązania:
https://bibliotekanauki.pl/articles/548596.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
edukacja
efektywność energetyczna
energy efficiency
education
Opis:
Artykuł prezentuje wybrane zagadnienia związane z edukacją na rzecz efektywności energetycznej, zwłaszcza z edukacją młodych odbiorców energii. Edukacja prowadzona przez przedsiębiorstwa energetyczne nie jest dla nich prostym zadaniem. Współpraca tych jednostek ze szkołami przynosi jednak określone efekty. W artykule zaprezentowano aspekty i kierunki rozwoju kierunków edukacji na rzecz efektywności energetycznej. Ponadto zawarto analizę wybranych programów edukacyjnych dla szkół, prowadzonych przez największe polskie przedsiębiorstwa energetyczne oraz analizę preferencji młodych odbiorców dotyczących form edukacji na podstawie danych z badań własnych, przeprowadzonych w regionie łódzkim w 2013 i w 2016 roku.
The paper describes some important aspects of energy efficiency education programs. It is a difficult task to motivate utilities to engage in energy efficiency fostering strategies, but nowadays it is very common to find energy efficiency programs implemented by utilities. A lot of them cooperate with many types of schools with good results. The directions of the energy efficiency education programs are briefly discussed in the paper. The short review of education programs offered by polish energy distribution companies as well as short analysis of students’ preferences based on the survey conducted in 2013 and 2016 are presented.
Źródło:
Nierówności Społeczne a Wzrost Gospodarczy; 2018, 53; 252-264
1898-5084
2658-0780
Pojawia się w:
Nierówności Społeczne a Wzrost Gospodarczy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of room and luminaire characteristics on general lighting in interiors
Autorzy:
Pracki, P.
Powiązania:
https://bibliotekanauki.pl/articles/201481.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lighting technology
interior lighting
energy efficiency
Opis:
General lighting is the most common way of illuminating interiors and the source of electricity consumption in buildings. This fact forces the search for lighting solutions effective both for people and the environment. In this study the impact of room and luminaire characteristics on general lighting conditions and energy efficiency in interiors is considered. In rooms of different sizes and reflectances, seventeen luminaire types with various light distributions were arranged in uniform layouts. The levels of average illuminance, uniformity and normalised power density related to two horizontal working planes were calculated. The impact of working plane reduction, room index and reflectances, lighting class and luminous intensity distribution of luminaire on the considered parameters was investigated. The use of the reduced working plane resulted in the increase in the average illuminance (7.7% on average), uniformity (33% on average) and normalised power density (23% on average). The impact of the room index and lighting class on the average illuminance and normalised power density was significant while the impact of the luminaire luminous intensity distribution and room reflectances was low. The normalised power density levels of the general electric lighting in interiors, with luminaire luminous efficacy of 100 lm/W, are in the following range: 1.08‒3.42 W/m2 per 100 lx. Based on these results a normalised power density level of 2 W/m2 per 100 lx is recommended for designing and assessing the new general electric lighting systems in buildings.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 3; 447-457
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy efficiency – selected thermo-ecological problems
Autorzy:
Ziębik, Andrzej
Stanek, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/239928.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy efficiency
system analysis
exergy
thermo-ecology
energy ecological
efficiency
Opis:
The paper is devoted to some problems connected with last modification of EU directive on energy efficiency, viz.: free choice of the measure concerning the improvement of energy efficiency, i.e. final or primary energy consumption, corresponding energy savings or energy-consumption index; however without cumulative consumption or cumulative savings of primary energy. In EU directive it has been stressed the importance of measurements systems (reliable measurement information); but has not been recommended any advanced validation of measurements results, nor energy auditing or algorithms of calculating the energy savings due to improvement of energy efficiency concerning large industrial plants. Evaluation of complex buildings should be realized by means of the system method (input-output analysis). The separate problem is devoted to application of thermo-ecological approach in the analysis of complete results of improving the energy efficiency. Human activity is connected with the depletion of nonrenewable resources, including primary energy, due to not only production of consumer goods but also the necessity of compensating the unfavourable effects of harmful emissions from energy-technological processes. Therefore the index of energy-ecological efficiency has been proposed as the most competent evaluation of improvement energy efficiency of production processes and systems.
Źródło:
Archives of Thermodynamics; 2020, 41, 2; 277-299
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Znaczenie „białych certyfikatów” w poprawie efektywności energetycznej przedsiębiorstw
The meaning of "white certificates" in improving the energy efficiency of enterprises
Autorzy:
Adamczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/113484.pdf
Data publikacji:
2014
Wydawca:
STE GROUP
Tematy:
Białe Certyfikaty
efektywność energii
przedsięwzięcia poprawy efektywności energii
white certificates
energy efficiency
energy efficiency improvement projects
Opis:
Poprawa efektywności energetycznej uważana jest za najbardziej ekonomiczny sposób zmniejszenia zużycia energii w gospodarce. W artykule poddano ocenie jeden z instrumentów polityki energetycznej „białe certyfikaty”, uznane jako innowacyjny instrument polityki na rzecz poprawy efektywności energetycznej. Ocenę tego instrumentu poddano w oparciu o wyniki przeprowadzonego przetargu na certyfikaty efektywności energetycznej.
Improving energy efficiency is considered to be the most economical way to reduce energy consumption in the economy. In this paper I analyze of one energy policy instrument, namely a White Certificates (WhC) scheme as an innovative policy instrument for energy efficiency improvement. The evaluation of this instrument were based on the results of the tender for energy efficiency certificates.
Źródło:
Systemy Wspomagania w Inżynierii Produkcji; 2014, 2 (8); 11-20
2391-9361
Pojawia się w:
Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved Water-Filling Power Allocation for Energy-Efficient Massive MIMO Downlink Transmissions
Autorzy:
Noor Shahida, M. K.
Nordin, R.
Insmail, M.
Powiązania:
https://bibliotekanauki.pl/articles/227000.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy efficiency
Massive MIMO
power allocation
spectral efficiency
Opis:
Energy Efficiency (EE) is becoming increasingly important for wireless communications and has caught more attention due to steadily rising energy costs and environmental concerns. Recently, a new network architecture known as Massive Multiple-Input Multiple-Output (MIMO) has been proposed with the remarkable potential to achieve huge gains in EE with simple linear processing. In this paper, a power allocation algorithm is proposed for EE to achieve the optimal EE in Massive MIMO. Based on the simplified expression, we develop a new algorithm to compute the optimal power allocation algorithm and it has been compared with the existing scheme from the previous literature. An improved water filling algorithm is proposed and embedded in the power allocation algorithm to maximize EE and Spectral Efficiency (SE). The numerical analysis of the simulation results indicates an improvement of 40% in EE and 50% in SE at the downlink transmission, compared to the other existing schemes. Furthermore, the results revealed that SE does not influence the EE enhancement after using the proposed algorithm as the number of Massive MIMO antenna at the Base Station (BS) increases.
Źródło:
International Journal of Electronics and Telecommunications; 2017, 63, 1; 79-84
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efektywność energetyczna firmy - wymogiem rynku i czasów w których żyjemy
Energy efficiency of a company - a requirement of the market and times in which we live
Autorzy:
Zaręba, K.
Powiązania:
https://bibliotekanauki.pl/articles/272189.pdf
Data publikacji:
2009
Wydawca:
Górnośląska Wyższa Szkoła Pedagogiczna im. Kardynała Augusta Hlonda
Tematy:
efektywność energetyczna
energia
firma
wydajność
energy efficiency
energy
company
efficiency
Opis:
W artykule przedstawiono uwarunkowania i działania prowadzące do podniesienia efektywności energetycznej w firmie, pokreślono znaczenie edukacji i możliwości pokonywania ograniczeń. Uwypuklono ekonomiczny i ekologiczny aspekt wydajności energetycznej. Wskazano możliwości zastosowania matematycznych metod jej interpretacji. Podkreślono, że efektywność energetyczna jest kluczowym elementem niezbędnym do osiągnięcia klimatyczno - energetycznych celów Unii Europejskiej, w tym również Polski.
The article presents the overall frame and policies aimed at improving the energy efficiency in companies; the importance of education and the environmental aspect of energy efficiency have been stressed. The potential for applying mathematical methods for efficiency inter-pretation has been presented. Energy efficiency has been underlined as the key element of achieving the climatic and energy objectives in Poland and the European Union.
Źródło:
Problemy Ekologii; 2009, R. 13, nr 2, 2; 83-87
1427-3381
Pojawia się w:
Problemy Ekologii
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy-Efficiency Measures at the Mexican Maquiladoras
Narzędzia na rzecz poprawy efektywności energetycznej w meksykańskich maquiladoras
Autorzy:
Munguia, Nora
Valazquez, Luis
Esquer, Javier E
Ojeda, Sara
Ellenbecker, Michael
Will, Markus
Delakowitz, Bernd
Powiązania:
https://bibliotekanauki.pl/articles/529853.pdf
Data publikacji:
2015
Wydawca:
Wyższa Szkoła Bankowa we Wrocławiu
Tematy:
energy efficiency
energy audits
Mexico
maquiladoras
climate change
Opis:
The energy consumption worldwide by the industrial sector is expected to keep increasing during the coming years; generating greenhouse gas (GHG) emissions as unwanted byproducts. For that reason, industrial facilities must take concrete initiatives in order to decouple their production growth from their CO2 emission generation in order to decrease their contributions to global warming. Concerned that this is a world-wide problem, Mexican maquiladoras have started several energy-efficiency initiatives. The aim of this article is to present significant results of a descriptive and analytical study that has been conducted into three maquiladoras located at northwestern Mexico of the first two stages of the Cleaner Production - Energy Efficiency program proposed by the United Nations Environment Programme. Findings reveal that, although electrical devices seem work efficiently, it is still possible to address energy waste. Additionally, attaching the energy-efficiency approach to the cleaner production framework was found a complicated task because, unlike emissions and toxic residues, energy inefficiencies are not easily visible, verifiable, or measurable.
Źródło:
Central and Eastern European Journal of Management and Economics (CEEJME); 2015, 3; 217-228
2353-9119
Pojawia się w:
Central and Eastern European Journal of Management and Economics (CEEJME)
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Planowanie rozwoju lokalnych systemów energetycznych z uwzględnieniem wymagań efektywności energetycznej
Planning the development of local energy systems including energy efficiency requirements
Autorzy:
Buriak, J.
Powiązania:
https://bibliotekanauki.pl/articles/268719.pdf
Data publikacji:
2012
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
planowanie energetyczne
efektywność energetyczna
energy planning
energy efficiency
Opis:
Przedstawiono założenia zaawansowanego planowania rozwoju lokalnych systemów energetycznych. Opisano etapy tego typu planowania i sposób ujęcia w nim wymagań efektywności energetycznej. Omówiono rolę audytorów efektywności energetycznej oraz wymagania odnośnie do ich kształcenia.
The assumptions to advanced local energy planning were introduced. The stages of planning the development were described and the recognition of the energy efficiency in planning process was mentioned. The role of energy efficiency auditors and the requirements for their training was discussed.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2012, 31; 189-194
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
General strength, energy efficiency (EEDI), and energy wave criterion (EWC) of deadrise hulls for transitional mode
Autorzy:
Kanifolskyi, Oleksandr
Powiązania:
https://bibliotekanauki.pl/articles/32913092.pdf
Data publikacji:
2022
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
energy wave criterion
energy efficiency factor
design accelerations
Opis:
In the modern world, environmental issues come to the fore. The document of MARPOL for reducing the emission of pollutants into the atmosphere relates to the energy efficiency coefficient EEDI . This coefficient is directly related to the power of the main engine and, accordingly, to the water resistance. The way to reduce the energy efficiency factor EEDI by increasing the relative length \( \frac{L}{ \sqrt[3]{V}} \) of the ship was proposed in this article. To determine the maximum value of the relative length, knowledge of the general strength of the vessel is required. The value of the relative section modulus of an equivalent girder for a small vessel of transitional mode is defined. The result of the graphic solution of two equations is the value of such a relative section modulus. This parameter is required to determine the limiting value of the relative length and to find solutions to reduce the coefficient EEDI . Comparative analysis of the obtained data with the data of the strength and weight of the H-girder with a length similar to the ship was conducted. The formula for determining the limiting value of the relative length was obtained from the equation of general strength. For a preliminary assessment of the future project of the ship, in terms of permissible design accelerations and the possibility of the ship moving against a sea wave of a certain height, a graph was built based on the application of the energy wave criterion EWCand the requirements of various classification societies.
Źródło:
Polish Maritime Research; 2022, 3; 4-10
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study on the Propulsion Performance in the Actual Sea by means of Full-scale Experiments
Autorzy:
Kayano, J.
Yabuki, N.
Sasaki, N.
Hiwatashi, R.
Powiązania:
https://bibliotekanauki.pl/articles/116354.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Propulsion Performance
Propulsion
mechanical engineering
Energy Efficiency Design Index (EEDI)
Ship Energy Efficiency Management Plan (SEEMP)
Energy Efficiency Operational Indicator (EEOI)
Self Propulsion Factors
Power Curves
Opis:
The IMO has adopted Energy Efficiency Design Index (EEDI), Ship Energy Efficiency Management Plan (SEEMP) and Energy Efficiency Operational Indicator (EEOI) in order to reduce GHG emissions from international shipping. And, the shipping industry is required to develop and improve the energy saving ship operation technologies to meet the above IMO guideline. The weather routing is one of the energy saving navigation technologies and widely adopted by oceangoing merchant ships. The effectiveness of the weather routing mainly depends on the accuracy of weather forecast data and the ship’s propulsion performance prediction. The propulsion performance in the actual sea is usually predicted using the Self Propulsion Factors obtained by model tests. It is necessary to understand the propulsion performance characteristics in the actual sea conditions for the improvement of propulsion performance prediction. From the above points of view, the authors performed full‐scale experiments using a training ship in order to investigate the propulsion performance characteristics in the actual sea. This paper describes the analysis results on the characteristics of Power Curves and Self Propulsion Factors under various weather and sea conditions.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 4; 521-526
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interactive calculator for assessment of the structure of energy consumption
Autorzy:
Ratner, S
Ratner, P
Powiązania:
https://bibliotekanauki.pl/articles/117736.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
energy efficiency
energy audit
interactive calculator
energy consumption structure
Opis:
In this paper we present a simple interactive calculator, which can be used in individual flats and houses, office buildings and educational institutes such as colleges and schools, for assessment of electricity use by different categories of equipment. The user indicates only type of equipment and its approximate time of work. The program outputs the structure of energy consumption in graphic format. The results of test procedures and the ways for improvement of the program are discussed.
Źródło:
Applied Computer Science; 2014, 10, 2; 32-43
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of the energy distribution of SABC circuits
Autorzy:
Gong, D.
Nadolski, S.
Sun, C.
Klein, B.
Kou, J.
Powiązania:
https://bibliotekanauki.pl/articles/110565.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
energy efficiency
Semi-Autogenous mill
energy distribution
energy benchmarking
Opis:
Improving the energy efficiency of large grinding mills is of great importance to reduce the energy cost of mineral processing. The ratio of SAG mill to ball mill’s energy consumption varies greatly among SABC operations. Thus far, very few research studies have been conducted to demonstrate how the SAG mill or ball mill responses to the change of circuit energy distribution in terms of comminution efficiency. The present study investigated the energy performance of an operating SABC circuit at variable circuit energy distributions. An energy benchmarking model was used to assess the comminution energy efficiency of SAG mill, ball mill, and overall circuit. It is found that the target SABC circuit achieves the highest overall energy efficiency when 37.6% of the total circuit energy is distributed to the SAG mill and 62.4% to the ball mill. The maximum energy efficiency of this SABC circuit is approximately 25% when compared to the minimum practical energy required to carry out an equivalent comminution duty. The study also showed that the ball mill is more sensitive to the variation in circuit energy distribution than the SAG mill.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 4; 1245-1252
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Regulations on Market Efficiency from the Viewpoint of High-efficiency Cogeneration
Studium nad efektywnością mechanizmów wspierających na przykładzie wysokosprawnej kogeneracji węglowej
Autorzy:
Sołtysik, M.
Mucha-Kuś, K.
Powiązania:
https://bibliotekanauki.pl/articles/397290.pdf
Data publikacji:
2014
Wydawca:
ENERGA
Tematy:
cogeneration
energy efficiency
system wsparcia
kogeneracja
efektywność
Opis:
Formation of a common European energy market implies the necessity of making adjustments to domestic law and adopting market development possibilities in order to meet European Union regulations. Implementation of system support to develop high-efficiency cogeneration was one of those aspects. Several years of such a mechanism functioning allow one to: analyze those regulations and their impact on sub-sector development, make a deep cost analysis and discuss its continuation in the future as well. Taking into account the background of implementation of EU regulations, this paper presents the results of volume-price estimations, current trends, evaluation of property rights regulated in the system, the analysis of market participants’ behaviours, as well as legal issues within this context.
Tworzenie wspólnego, europejskiego rynku energii implikuje konieczność dostosowywania prawa krajowego i kierunków rozwoju sektora do determinantów unijnych. Jednym z tych elementów było wprowadzenie systemu wsparcia rozwoju wysokosprawnej kogeneracji. Kilkuletnia historia funkcjonowania mechanizmu pozwala na dokonanie analiz zasadności wsparcia, ocenę jego wpływu na rozwój podsektora, szczegółową analizę kosztów oraz przeprowadzenie wnioskowania w zakresie kontynuacji mechanizmu. W artykule przedstawione zostały, na tle genezy wprowadzenia systemu wsparcia, wyniki analiz wolumetryczno-cenowych, bieżące trendy, ocena bilansu praw majątkowych w systemie, próba oceny zachowania uczestników rynku oraz problematyka legislacyjna w przedmiotowym zakresie.
Źródło:
Acta Energetica; 2014, 3; 134-143
2300-3022
Pojawia się w:
Acta Energetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Area Energy Efficiency of LTE Macro Base Stations in Different Environments
Autorzy:
Shahab, S. N.
Abdulkafi, A. A.
Zainun, A. R.
Powiązania:
https://bibliotekanauki.pl/articles/308271.pdf
Data publikacji:
2015
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
Area Energy Efficiency
LTE
Macro Base Station
Opis:
Energy efficiency (EE) of wireless telecommunications has become a new challenge for the research community, governments and industries in order to reduce CO2 emission and operational costs. EE of base stations (BSs) in cellular networks is a growing concern for cellular operators to not only maintain profitability, but also to reduce the overall negative impact to the environment and economic issues for wireless network operators. In this paper, a framework focuses on the Area Energy Efficiency (AEE) evaluation of LTE BSs is presented. The parameters affect on the AEE and the coverage area of LTE BS in different scenarios are investigated. AEE analysis has been done using a few key performance indicators including transmit power, bandwidth, load factor with the assumption of different scenarios (urban, suburban and rural). The simulation results show that the LTE BSs have better AEE in an urban environment for cell radius less than 750 m compare with the suburban and rural environments. Furthermore, it is obvious that there is a strong influence of traffic load, BW and transmission power on AEE of LTE network. On the other hand, AEE increases significantly as the BW size increases. Finally, it has been shown that the AEE of LTE macro BS decreases with increasing the percentage of traffic load for all scenarios.
Źródło:
Journal of Telecommunications and Information Technology; 2015, 1; 59-66
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy Aware Data Centers and Networks: a Survey
Autorzy:
Arabas, P.
Powiązania:
https://bibliotekanauki.pl/articles/308876.pdf
Data publikacji:
2018
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
energy efficiency
green networks
resource allocation
HPC
Opis:
The past years have brought about a great variety of clusters and clouds. This, combined with their increasing size and complexity, has resulted in an obvious need for power-saving control mechanisms. Upon presenting a basis on which such solutions - namely low-level power control interfaces, CPU governors and network topologies – are constructed, the paper summarizes network and cluster resources control algorithms. Finally, the need for integrated, hierarchical control is expressed, and specific examples are provided.
Źródło:
Journal of Telecommunications and Information Technology; 2018, 4; 26-36
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of Energy Consumption in Agro-Industrial Wastewater Treatment Plant
Autorzy:
Dąbrowski, W.
Żyłka, R.
Rynkiewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/124802.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
dairy industry
meat industry
wastewater
energy efficiency
Opis:
Energy consumption during waste water treatment is a very important factor affecting food industry plants. Apart from highly efficient treatment of dairy and meat sewage, a low energy consumption is required in order to lower its costs. During the research period, parameters of raw and treated sewage were tested (BOD,COD, N-total, P-total). Also, the energy consumption from selected processes as well as total consumption were measured. Indicators of energy consumption per m3 and removed load were calculated. It was found that biological treatment and aeration played the main role in energy consumption in both objects. It was respectively 40 and 47% for Bielmlek and JBB plants. The second biggest energy consuming stage of treatment in both objects was sludge processing. Energy required to process excessive sludge equaled 30% of the total energy usage in both plants. Energy consumption factors related to hydraulic flow gave results in the range from 2.05 to 3.3 kWhm-3and from 2.72 to 3.23 kWhm-3 for Bielmlek and JBB plants respectively. The research will be continued in order to optimize energy consumption, while retaining high efficiency treatment in food industry WWTPs. Finally, a mathematical model will be prepared for optimizing energy consumption in food industry WWTPs.
Źródło:
Journal of Ecological Engineering; 2016, 17, 3; 73-78
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ukrainian perspectives of using world experience in investing in energy innovations
Autorzy:
Lazarenko, Dmitry
Krutogorskyi, Iaroslav
Powiązania:
https://bibliotekanauki.pl/articles/692537.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Ekonomiczny w Poznaniu
Tematy:
alternative energy
renewable sources
energy generation
energy efficiency
energy policy
Opis:
The article presents the world economic trends of alternative energy. An analysis of international programs and innovative projects that are implemented and used in the energy sector is introduced. Conceptual proposals and innovative research in the field of alternative energy are represented. The author also suggests ways of formation of effective energy management and rational energy policy.
Źródło:
Research Papers in Economics and Finance; 2017, 2, 1; 27-32
2543-6430
Pojawia się w:
Research Papers in Economics and Finance
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-50 z 800

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