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Wyświetlanie 1-15 z 315
Tytuł:
Electrical energy consumption by the household - type consumers
Autorzy:
Frąckowiak, R.
Gałan, T.
Powiązania:
https://bibliotekanauki.pl/articles/97411.pdf
Data publikacji:
2011
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
electrical energy consumption
PTPiREE
forecast energy consumption
Opis:
In the paper, selected results of analysis of the electrical energy consumption by the household-type consumer group as well as results for energy defined regarding the standard profiles for such a group are presented. In the analysis, a developed tailored IT tool has been used.
Źródło:
Computer Applications in Electrical Engineering; 2011, 9; 112-119
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of trolleybus energy consumption
Autorzy:
Siemionek, E.
Powiązania:
https://bibliotekanauki.pl/articles/103282.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
energy consumption
trolleybuses
Opis:
Developing energy-saving solutions in vehicle construction and operation has become a priority in the automotive sector. For this reason, zero-emission and low-noise trolleybuses have started to play a significant role in urban public transportation. The paper discusses the methodology and results of energy consumption analysis for trolleybus travel on a determined route. For a given section of the route, energy recovery under braking was calculated.
Źródło:
Advances in Science and Technology. Research Journal; 2013, 7, 18; 81-84
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy Consumption in Tram Transport
Autorzy:
Kuminek, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/504377.pdf
Data publikacji:
2013
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
tram
energy consumption
measurements
Opis:
Rail transport through the use of electric traction is more friendly for environment than other means of transport. It has a lot of benefits, mainly: the possibility of mass transport using as little energy as possible per one passenger, reducing crowd, reducing congestion, lower emission of pollution, weatherproof, more safety, regularity of travelling. As we can see from the above mentioned benefits, public tram transport is one of the most popular means in Poland. Tram market in Poland is one of the largest in the world. Nowadays we have 14 thousand tram lines used by 16 companies, which gives a total of above 3600 cars. We have many types of trams exploited at present. The most popular are cars 105Na, characterized by low comfort for passengers, too low durability and high energy consumption. Because these cars are at present exploited, on the basis of their structure many different modernizations are made. The examples could be two types of cars : 204WrAs and 205WrAs , which have been produced since 2005 by the Wrocław PROTRAM Company. The largest Polish cities also use a modern trams stock produced by the largest Polish construction companies. One of the examples is recently using five-cars type 120Na produced by PESA company. This article presents results of measurements of energy consumptions of trams 105Na using traditional start –up resistance and trams PROTRAM 205WrAs type with asynchronous propulsion system in IGTB technology. Then the energy consumption is compared with data obtained from manufacturer of a modern tram PESA 120Na, working in the same conditions – asynchronous propulsion system.
Źródło:
Logistics and Transport; 2013, 18, 2; 93-100
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodology of forecasting and forecast of demand for energy carries by lorries in POland up to the year 2020 (Part II)
Autorzy:
Gis, W.
Menes, E.
Waśkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/241669.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
lorries
energy consumption
forecast
Opis:
Discussed methodology of forecasting and forecast of demand for energy carriers have been presented in two parts. In first part has been given forecast of freight road transport volumes up to the year 2020. Estimated structure of the fleet in the initial period of the forecast. Variant forecast of the fleet size and its structure according to categories and age. In this part has been given forecast of demand for energy carriers by lorries. When forecasting the scale of demand for individual energy carriers by lorries in a given year, the following issues were taken into account: estimated numbers of vehicles registered according to categories and production periods, an estimated average consumption offuels per 100 km of mileage according to specified categories of vehicles and their production periods, estimated average annual mileages of vehicles according to categories and production periods. A drop in the use of petrol by lorries in Poland is expected to have taken place by the year 2020. The estimated forecast level amounts to 315-325 Gg. The use of petrol in 2020 would decrease to the level of 55-57% of the consumption in the initial period of the forecast. An estimated increase in the demand for diesel fuels by lorries is expected to take place in Poland in 2020 and it is envisaged to reach the level of 5848-7680 Gg, which compared to the consumption in the initial period of the forecast, would be tantamount to an increase dynamics of 170-223%. The demand for LPG fuels by lorries in 2020 should amount to 264-287 Gg, (an increase of 147-160% compared to the initial period of the forecast). The demand for CNG fuel by lorries in 2020 would reach 61-68 Gg.
Źródło:
Journal of KONES; 2008, 15, 4; 157-162
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Problem of Energy-Consuming Processes in the Planning of Modern Manufacturing Technologies
Autorzy:
Rusek, P.
Wantuch, E.
Zagórski, K.
Powiązania:
https://bibliotekanauki.pl/articles/99607.pdf
Data publikacji:
2013
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
energy consumption
planning
technological process
Opis:
Despite the application of a series of universally acknowledged procedural principles, the manufacture of elements is a process in which the skills and professional experience of the planner are of continued importance. This leads to a certain degree of subjectivity in evaluation as well as to arbitrariness and variety in the solutions presented by process engineers. By introducing evaluations of the energy consumption of processes as an additional criterion, it is possible to make planning more objective, to reduce arbitrariness in the selection of production technologies, and to reduce energy consumption and manufacturing costs. An example of the application of energy consumption indices in the design of a selected manufacturing process is given in this article.
Źródło:
Journal of Machine Engineering; 2013, 13, 4; 68-76
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of energy demand in a territorial government unit - methodological problems
Szacowanie zapotrzebowania na energię jednostki terytorialnej - problemy metodyczne
Autorzy:
Kowalczyk-Juśko, A.
Kościk, B.
Powiązania:
https://bibliotekanauki.pl/articles/2051742.pdf
Data publikacji:
2017
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Tematy:
energy balance
energy demand
energy consumption
methodology
Opis:
Subject and purpose of work: The aim of the study is to identify methodological problems, which may be encountered during the preparation of the energy balance of a territorial unit, along with indications of ways to solve them. Materials and methods: Problems were identified during the preparation of the energy balance for two selected rural communes and then they were investigated with reference to the literature on this subject. Results: Estimating the energy demand of a local government unit requires proper identification of the groups of energy consumers, divided into facilities owned or co-owned by communes and ones independent from commune authorities. The latter group is divided further, into households, businesses, farms. For each of the users different methods of obtaining data may be needed: a survey and analysis of statistical data, analysis of financial documents, evaluation of the buildings’ age. Generally, however, preparing an energy balance statement requires many simultaneous approaches, and the combination of multi-criterion analysis provides the most reliable picture of the problem. Conclusions: The scope of the data needed to compile an energy balance statement for local government units, depends on the purpose of the developed analysis. Methodological handbooks and training materials on this subject are helpful, but the developed methodologies may need to be modified and adapted to specific conditions.
Przedmiot i cel pracy: Celem pracy jest wskazanie problemów metodycznych, na jakie napotkać można podczas sporządzania bilansu energetycznego jednostki terytorialnej, wraz ze wskazaniami sposobów ich rozwiązania. Materiały i metody: Problemy zidentyfikowano podczas sporządzania bilansu energetycznego dwu wybranych gmin wiejskich, a następnie skonfrontowano z literaturą przedmiotu. Wyniki: Oszacowanie zapotrzebowania na energię w jednostce samorządu terytorialnego wymaga właściwego określenia grup odbiorców energii w podziale na obiekty będące własnością lub współwłasnością gminy oraz niezależne od władz gminy. Druga grupa dzieli się dalej, na gospodarstwa domowe, przedsiębiorstwa, gospodarstwa rolne. Dla każdej z grup odbiorców mogą być potrzebne odmienne metody pozyskania danych: badanie ankietowe, analiza danych statystycznych, analiza dokumentów finansowych, ocena wieku budynków. Najczęściej jednak sporządzenie bilansu energetycznego wymaga stosowania wielu podejść równocześnie, a połączenie wyników analizy wielokryterialnej daje najbardziej rzetelny obraz badanego problemu. Wnioski: Zakres danych, potrzebnych do sporządzenia bilansu energetycznego jednostki samorządu terytorialnego, zależy od celu opracowania analizy. Poradniki metodyczne i materiały szkoleniowe na ten temat są pomocne, jednak opracowane metodyki mogą wymagać modyfikacji i dostosowania do konkretnych warunków.
Źródło:
Economic and Regional Studies; 2017, 10, 3; 5-16
2083-3725
2451-182X
Pojawia się w:
Economic and Regional Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on reducing energy consumption in manufacturing systems
Autorzy:
Jędrzejewski, J.
Kwaśny, W.
Powiązania:
https://bibliotekanauki.pl/articles/99980.pdf
Data publikacji:
2011
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
machine tool
processes
energy consumption
Opis:
The paper presents the complexity and importance of energy saving in industry, manufacturing facilities, machine tools and machining processes. The increasing energy demand and the necessity of conscious energy use are highlighted. Problems relating to the reduction of energy consumption by machine tools and manufacturing facilities, the necessity of basing new energy-efficient designs on knowledge, the accurate modelling of power losses and the use of intelligent energy consumption control with special regard to the drives of controllable axes are discussed. of reducing energy consumption by machine tools and manufacturing processes is indicated.
Źródło:
Journal of Machine Engineering; 2011, 11, 3; 7-20
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testing energy consumption in the trolleybus and the bus on a chosen public transport line in Lublin
Autorzy:
Siemionek, E.
Dziubiński, M.
Powiązania:
https://bibliotekanauki.pl/articles/103280.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
energy consumption
public transport
trolleybuses
Opis:
One of the most important elements determining the assessment of the quality of trolleybuses and buses in public transport is the operating cost which comprises mainly the cost of power or fuel consumption. The knowledge of economic properties of new vehicles is justified when the decision about their purchase is being made. The information about vehicles which have not been used in the company so far comes mainly from the protocols of homologation tests as well as the opinions of other users. In both cases such knowledge is insufficient against the expected information providing for specific driving conditions in urban traffic. Chosen driving tests applied for the evaluation of energy consumption of trolleybuses and buses operation are presented in the article. Working conditions of the trolleybus were analysed on the basis of the comparative tests of the bus and the trolleybus for a chosen communication line in Lublin. On the basis of the determined characteristics describing working conditions of the vehicles constituting public transport in Lublin, the MPKPL test was drawn up and the analysis of findings was carried out for a chosen communication line.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 26; 152-156
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of Selected Spectrum Sensing Systems for Cognitive Radio Networks using FPGA Platform
Autorzy:
Abdullah, H. N.
Abed, H. S.
Powiązania:
https://bibliotekanauki.pl/articles/958080.pdf
Data publikacji:
2018
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
cognitive radio
energy consumption
energy detection
FPGA
Opis:
The energy efficient spectrum sensing method is very important in cognitive radio (CR), since high power drain may limit its implementation in mobile applications. The spectrum sensing feature consumes more energy than other functional blocks, as it depends on continuous detection of the presence or absence of the primary user (PU). In this paper, we proposed two methods to reduce energy consumption of the spectrum sensing feature. The first is of a single stage variety with a reduced number of sensed samples. The other uses two stages. The first stage performs coarse sensing for many subchannels, and the best subchannel is forwarded for fine sensing in the second stage. The performance of the proposed methods is evaluated in AWGN channel and compared with the existing approach. The proposed methods are simulated using Matlab and ModelSim and are then hardware implemented using the Altera Cyclone II FPGA board. Simulation results show that the proposed methods offer an improvement in energy consumption with an acceptable reduction in the probability of detection. At Eb/N0 Eb/N0 Eb/N0 of 0 dB, the energy consumption is reduced by 50% and 72% in the first and second proposed method, respectively, compared to the traditional method (100% sensing).
Źródło:
Journal of Telecommunications and Information Technology; 2018, 4; 81-87
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
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 Consumption in the Facilities of the Ciechanów Dairy Cooperative
Autorzy:
Gugała, M.
Zarzecka, K.
Kapela, K.
Sikorska, A.
Powiązania:
https://bibliotekanauki.pl/articles/124580.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
electric energy
energy consumption
facilities
dairy cooperative
Opis:
The work presents the analysis of electric energy consumption in individual buildings of the Ciechanów Dairy Cooperative in 2011. The plant includes a cool storage facility, a boiler house, a compression room and CIP (Cleaning In Place) stations. The plant manufactures liquid milk, cream, cheese, cottage cheese, cream cheese, butter and yoghurts. In 2011, the total electric energy consumption in the Cechanów Dairy Cooperative was 873114.0 kWh. The highest energy consumption (556430.0 kWh0 was recorded for the cooler (63.7% of total consumption) and the lowest for CIP stations (33084.0 kWh). The average electric energy consumption in the Cooperative plant was 72759.5 kWh, the highest (104800.6 kWh) in November and the lowest (40000.6 kWh) in March.
Źródło:
Journal of Ecological Engineering; 2015, 16, 3; 139-142
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integration of capacitors with carbon-lignin based electrodes in rail vehicles for enhanced energy efficiency
Autorzy:
Kurc, Beata
Woźniak, Krystian
Rymaniak, Łukasz
Szymlet, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/32222566.pdf
Data publikacji:
2023-12-28
Wydawca:
Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
Tematy:
braking energy
capacitors
energy consumption
lignin
railbus
Opis:
The article presents considerations regarding the possibility of recovering braking energy of a rail vehicle. The energy parameters obtained during acceleration and braking of the loaded railbus were taken as input data. It was found that over 13 kWh of energy was lost irretrievably in the braking resistors. Due to the speed of the discussed process, capacitors with an original design were proposed for energy recovery. For the purposes of this study, electrodes were fabricated using carbon derived from lignin carbonization at two distinct temperatures: 900°C and 1000°C. Based on the electrochemical tests carried out, it was found that the second proposed solution achieves a significantly better power-to-weight ratio – 13 kW/kg.
Źródło:
Rail Vehicles/Pojazdy Szynowe; 2023, 3-4; 33-39
0138-0370
2719-9630
Pojawia się w:
Rail Vehicles/Pojazdy Szynowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Processing technologies of antarctic krill on board with regard to minimizing energy
Przetwarzanie kryla antarktycznego na statku w warunkach minimalnego zużycia energii
Autorzy:
Dutkiewicz, D.
Brzeski, M.
Bykowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/1399054.pdf
Data publikacji:
1988
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
Antarctic krill
fishing trawler
energy consumption
Opis:
Concise review of krill processing methods for food, fodder and by-products under fishing trawler conditions is given. Quality of the products and energy consumption were the main evaluation criterions.
W ostatnim okresie przeprowadzono w Polsce intensywne badania zasobów kryla antarktycznego. W wyniku tego opracowano wiele oryginalnych technologii i urządzeń do pełnego wykorzystania kryla jako składnika żywności, pasz i produktów technicznych. Technologie te były sprawdzone częściowo w warunkach morskich. Ocena produktów żywnościowych z kryla, pod względem ich jakości, zużycia energii i wydajności linii technologicznych, pozwala na wyciągnięcie następujących wniosków: - produkcja paszy z kryla powinna być ograniczona ze względu na wysokie zużycie energii, - ponad 50% złowionego kryla powinno być użyte do produkcji żywności, szczególnie roller peeled tail, meat. Taki system wykorzystania kryla jest zupełnie realny w odniesieniu do zużycia energii i nie różni się od tradycyjnego przetwarzania ryb na statkach. Nie powoduje on żadnego wzrostu zagrożenia życia na Oceanie Południowym.
Źródło:
Acta Alimentaria Polonica; 1988, 14(38), 3-4; 177-182
0137-1495
Pojawia się w:
Acta Alimentaria Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Notification methods in wireless systems
Autorzy:
Nawrocki, P.
Jakubowski, M.
Godzik, T.
Powiązania:
https://bibliotekanauki.pl/articles/305806.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
notification methods
wireless systems
energy consumption
Opis:
Recently, there has been an increasing need for secure, efficient, and simple notification methods for wireless systems. Such systems are meant to provide users with precise tools best suited for work or leisure environments, and a lot of effort has been put into creating a multitude of applications. At the same time, however, not much research has been made into determining which of the available protocols are best suited for each individual task. A number of basic notification methods are presented here, and tests have been performed for the most-promising ones. An attempt has been made to determine which of the methods have the best throughput, latency, security, and other characteristics. A comprehensive comparison is provided, which can be used to select the right method for each individual project. Finally, conclusions are provided, and the results from all of the tests conducted are discussed.
Źródło:
Computer Science; 2016, 17 (4); 519-539
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approach of a model extension for virtual commissioning to predict energy consumption of production systems
Autorzy:
Hollas, Leon
Schenke, Christer-Clifford
Hellmich, Arvid
Powiązania:
https://bibliotekanauki.pl/articles/28407328.pdf
Data publikacji:
2023
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
energy consumption
robot
virtual commissioning
simulation
Opis:
Not only as a result of the current energy crisis, opportunities to save energy are a highly focused topic in production. For this reason, the article proposes an approach to evaluate the part-specific energy consumption of production systems by utilization of simulation methods. As an application example, a Comau 6-axis robot is chosen, of which a physically based model is created in the CAE software SimulationX. This model is then exported as a Functional Mock-Up Unit (FMU) and co-simulated within a virtual commissioning environment. Virtual commissioning enables a controller to be connected to a model. Within a Software-in-the-Loop simulation, this is a virtual control system. Based on the movement specifications from the virtual controller, the movement behaviour of the machine can be simulated in the virtual commissioning tool ISG-virtuos and the FMU returns the associated power and energy curve as a result variable. For further use, this kind of enhanced simulation models provides the possibility to optimize the utilization of production systems for specific processes in the context of a complete production line or factory.
Źródło:
Journal of Machine Engineering; 2023, 23, 4; 77--88
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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