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Wyświetlanie 1-15 z 7290
Tytuł:
Norwegian experiences in the field of renewable energy technologies
Norweskie doświadczenia w zakresie technologii energetyki odnawialnej
Autorzy:
Aarhus, Inge
Powiązania:
https://bibliotekanauki.pl/articles/106021.pdf
Data publikacji:
2011
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
energia
bioenergia
biogaz
odnawialne źródła energii
energia w Norwegii
norweskie najlepsze praktyki
energy
bioenergy
biogas
renewable energy sources
Norway energy
Norwegian best practices
Opis:
The goal of the article is to present experiences of Norway in renewable technologies. For Scandinavian countries are highly experienced in bioenergy and renewable energy sources technologies, Norway was picked up as an example of best practices in the field. After presenting basic assumptions in the topic of renewable energy, the Norwegian examples will be described.
Celem artykułu jest przedstawienie doświadczeń Norwegii w zakresie technologii energetyki odnawialnej. Spośród państw skandynawskich doświadczonych w bioenergii i technologiach OZE, Norwegia została wybrana jako przykład najlepszych praktyk w tym zakresie. Po przedstawieniu ogólnych informacji na temat OZE, opisano norweskie doświadczenia w różnych typach instalacji ekologicznego pozyskiwania energii.
Źródło:
Acta Innovations; 2011, 1; 21-27
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
From A Climate Action Plan (CAP) to a Microgrid: The SEEU Sustainability Concept Including Social Aspects
Autorzy:
Abazi, Alajdin
Iljazi, Iljas
Spirovski, Darko
Powiązania:
https://bibliotekanauki.pl/articles/1035820.pdf
Data publikacji:
2011
Wydawca:
Academicus. International Scientific Journal publishing house
Tematy:
Microgrid
Intelligent Microgrid
Climate Action Plan (CAP)
Energy Efficiency
Power Quality (PQ)
Green House Gases (GHG)
Carbon Footprint
Opis:
Following new global trends, the South East European University (SEEU), besides excellence in teaching and research, is committed to contributing to climate change effects and energy efficiency. SEEU will introduce a microgrid as a further step from the CAP towards energy sustainability. This paper presents the SEEU CAP and microgrid and also highlights benefits that are related to socio-economic conditions and the environment, including social aspects and sustainability.
Źródło:
Academicus International Scientific Journal; 2011, 04; 42-59
2079-3715
2309-1088
Pojawia się w:
Academicus International Scientific Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of viscous-elastic properties of a cylindrical sealing element on its sealing ability
Autorzy:
Abbasov, Elkhan
Rustamova, Kaklik
Darishova, Aynur
Powiązania:
https://bibliotekanauki.pl/articles/2055051.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
contact pressure
sealing element
boundary condition
potential energy
functional
Opis:
The stress-strain state of a sealing element in the form of a hollow cylinder is defined with regard to viscous-elastic properties of its material. Based on linear laws of heredity, an analytical formula allowing one to determine the axial load necessary for tightness of the surface of the sealing element and the cylinder wall depending on its physic-mechanical properties and geometrical dimensions is found. Influence of viscous-elastic properties of the material of the sealing element on its sealing ability is realized based on the hypothesis of elastic analogy. The results of numerical calculations are represented in the form of graphs of the external force necessary for achieving sightless. It is shown that viscous-elastic properties of the sealer material greatly influence its sealing ability. Because of heredity of the sealer material, values of the external forces drop in some cases by about five times.
Źródło:
Journal of Theoretical and Applied Mechanics; 2021, 59, 3; 481--492
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optical and Dielectrical Properties of (PEG-CMC) Films Prepared by Drop Casting Method
Autorzy:
Abdali, O. Karrar
Abdulazeez, O.
Powiązania:
https://bibliotekanauki.pl/articles/1192693.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Optical Properties
Energy Gap
PEG and CMC
Opis:
Films of PEG after and before doped by carboxymethyle cellulose CMC were deposed on glass substrates by drop casting method. The absorbance and transmittance spectra have been recorded for all the deposited films in order to study the optical constants such as, refractive index, extinction coefficient, optical conductivity, real and imaginary parts of the dielectric constant, these additives effect all the parameters under study and enhance their value especially the optical absorption. The values of absorption coefficient refer to allowed direct transition.
Źródło:
World Scientific News; 2016, 46; 189-203
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamic analysis of a new dual evaporator CO2 transcritical refrigeration cycle
Autorzy:
Abdellaoui, E. Y.
Kairouani, L. K.
Powiązania:
https://bibliotekanauki.pl/articles/240198.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
CO2
energy
refrigeration
ejector
exergy
energia
chłodzenie
ejektor
egzergia
Opis:
In this work, a new dual-evaporator CO2 transcritical refrigeration cycle with two ejectors is proposed. In this new system, we proposed to recover the lost energy of condensation coming off the gas cooler and operate the refrigeration cycle ejector free and enhance the system performance and obtain dual-temperature refrigeration simultaneously. The effects of some key parameters on the thermodynamic performance of the modified cycle are theoretically investigated based on energetic and exergetic analysis. The simulation results for the modified cycle indicate more effective system performance improvement than the single ejector in the CO2 vapor compression cycle using ejector as an expander ranging up to 46%. The exergetic analysis for this system is made. The performance characteristics of the proposed cycle show its promise in dual-evaporator refrigeration system.
Źródło:
Archives of Thermodynamics; 2017, 38, 1; 39-62
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy-Aware WiFi Network Selection via Forecasting Energy Consumption
Autorzy:
Abdrabou, Atef
Darwish, Mohamed
Dalao, Ahmed
AlKaabi, Mohammed
Abutaqiya, Mahmoud
Powiązania:
https://bibliotekanauki.pl/articles/226857.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy
consumption
forecast
WiFi
IoT
Opis:
Covering a wide area by a large number of WiFi networks is anticipated to become very popular with Internet-of-things (IoT) and initiatives such as smart cities. Such network configuration is normally realized through deploying a large number of access points (APs) with overlapped coverage. However, the imbalanced traffic load distribution among different APs affects the energy consumption of a WiFi device if it is associated to a loaded AP. This research work aims at predicting the communication-related energy that shall be consumed by a WiFi device if it transferred some amount of data through a certain selected AP. In this paper, a forecast of the Energy consumption is proposed to be obtained using an algorithm that is supported by a mathematical model. Consequently, the proposed algorithm can automatically select the best WiFi network (best AP) that the WiFi device can connect to in order to minimize energy consumption. The proposed algorithm is experimentally validated in a realistic lab setting. The observed performance indicates that the algorithm can provide an accurate forecast to the energy that shall be consumed by a WiFi transceiver in sending some amount of data via a specific AP.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 2; 339-345
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of agricultural architecture with elements of energy-efficient technology expertise of KazGASA faculty of architecture
Architektura obszarów wiejskich z elementami energooszczędnych technologii - doświadczenie KazGASA, Wydział Architektury
Autorzy:
Abdrassilova, G. S.
Kuandykov, K. A.
Atagulova, R. A.
Powiązania:
https://bibliotekanauki.pl/articles/2065510.pdf
Data publikacji:
2018
Wydawca:
Politechnika Częstochowska
Tematy:
agricultural architecture
energy-efficient technology
agro-settlements
agrotourism
vertical farm
architektura obszarów wiejskich
technologia energooszczędna
agroobiekty
agroturystyka
gospodarstwa rolne
Opis:
In the context of the development of the agricultural sector, as one the elements of Kazakhstan’s economic development, it is necessary to prepare professionals possessing the ability to design new types of agrarian facilities (agroparks, agrotourisism complexes, vertical farms, conservatories, greenhouses) using energy-efficient technology. The article presents the results of implementing elements of designing energy-saving facilities in rural areas into the educational process in the the field of “Architecture” at the Faculty of Architecture of KazGASA.
Biorąc pod uwagę rozwój sektora rolnego, jako jednego z elementów rozwoju gospodarki Kazachstanu, na kierunkach studiów architektonicznych konieczne staje się przygotowanie specjalistów posiadających umiejętność projektowania nowych typów obiektów agrarnych (tj. agroparki, gospodarstwa i kompleksy agroturystyczne, farmy, oranżerie, szklarnie) z wykorzystaniem technologii energooszczędnych. W artykule przedstawiono wyniki wdrożenia elementów projektowania energooszczędnych obiektów na obszarach wiejskich do procesu edukacyjnego na kierunku architektura na Wydziale Architektury KazGASA.
Źródło:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2018, 7, 1; 23--30
2299-8535
2544-963X
Pojawia się w:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy efficiency in the architecture of the eastern countries: traditions and innovations
Autorzy:
Abdrassilova, Gulnara
Danibekova, Elvira
Powiązania:
https://bibliotekanauki.pl/articles/31342624.pdf
Data publikacji:
2022
Wydawca:
Politechnika Częstochowska
Tematy:
efektywność energetyczna
architektura krajów Wschodu
tradycje
innowacje
organizacja architektoniczna
planowanie
energy efficiency
architecture of the countries of the East
traditions
innovations
architectural organization
planning organization
Opis:
Architecture, as a science and practice of forming the environment, sensitively responds to the challenges of modernity - technological, economic, etc. One of the urgent challenges is environmental, the concern of which is formulated in many international acts, including the UN Sustainable Development Goals until 2030. Methods of neutralizing the negative impact on the environment in modern conditions are costly and consist of energy-intensive technologies. Architecture has been built since ancient times on the principles of consistent inclusion of artificial structures in the environment: in different countries there are traditional methods of protection from adverse climatic factors through the use of architectural planning and structural techniques. Demonstration of the possibilities of traditional ways of forming a comfortable environment in the countries of the East, as well as their interpretation in modern energy-efficient practice of architecture and construction is given in this article.
Źródło:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2022, 11; 147-154
2299-8535
2544-963X
Pojawia się w:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The energy of sheet bending on a crank-type press
Ehnergetika gibki listovogo metalla na krivoshipnom presse
Autorzy:
Abdulganiev, M.
Ray, M.
Powiązania:
https://bibliotekanauki.pl/articles/792514.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
crank-type press
power calculation
working stroke
deformation
sheet bending
energy
analytical method
Opis:
The analytical method of power calculation of crank-type press working stroke is developed instead of graph analytical method. This analytical method allows substantially reducing working hours of calculation and promoting exactness of the results. Bending and coining are offered to execute separately. That will allow to make this processes more economically and to reduce depreciate charge.
Разработанный аналитический метод энергетического расчета рабочего хода кривошипного пресса вместо графоаналитического позволяет существенно снизить трудоемкость расчета и повысить точность его результатов. Предложено свободную гибку и правку (чеканку) выполнять раздельно, что позволит экономичность процессов и снизить амортизационные отчисления.
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 4
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
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:
The use of BIM to propose alternative construction methods to reduce the cost of energy for the historic archeological building in Iraq
Autorzy:
Abdullah, Oday Hammody
Hatem, Wadhah Amer
Powiązania:
https://bibliotekanauki.pl/articles/27312125.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
autodesk
chmura 360°
modelowanie informacji o budynku
BIM
projekt budowlany
efektywność energetyczna
budynek zabytkowy
projektowanie zrównoważone
parametr projektowy
insight 360 cloud
building information modelling
construction project
energy efficiency
historic building
sustainable design
design parameter
Opis:
The building information modeling (BIM) method is one of the newest methods that has been widely used in many parts of the building business, including energy management. The aim of this research is to analyze the most holy theotokos in order to find the best set of modifications that result in an optimal energy cost. The analysis was conducted through the use of building information modeling (BIM) technology and the associated programmers such as Auto Desk Revit 2020 and Auto Desk Insight 360, in order to determine the optimal strategies by which the most applicable alternative construction materials and procedures are considered in order to obtain an environmentally and economically sustainable most holy theotokos. Applying this analyze to the most holy theotokos revealed that many alternatives are capable of making a tangible reduction in the cost of electrical energy consumption and the cost of fuel for generators. Such reductions are noticed when altering in the optimum manner. The alteration of construction materials for walls and roofs also reduces the cost of electrical energy consumption and fuel for generators. The results show that changing the plug load efficiency in the optimal manner reduces the cost of electrical energy consumption by approximately 933913 US dollar ($), and changing the heating, ventilating, and air conditioning systems (HVAC) reduces the cost of fuel energy consumption by approximately 13522 US Dollar ($). Green building studio (GBS) is a tool that helps in the early stages of a project to find the best ways to save energy.
Źródło:
Archives of Civil Engineering; 2023, 69, 2; 535--549
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CdO thin films Grown by Chemical Spray Pyrolysis and Effect of Substrate type on its Optical Properties
Autorzy:
Abood, Mohmood Muwafaq
Jabbar, Wasmaa Abdulsattar
Daroysh, Hassan Hadi
Qader, Kameran Yasseen
Al-Baidhany, Ismaeel A.
Hussin, Hadi Ahmed
Jasim, Marwah Nasif
Powiązania:
https://bibliotekanauki.pl/articles/1194135.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
CdO
Optical properties
Thin Film
energy gap
Opis:
Cadmium oxide (CdO) thin films were formed by chemical spray pyrolysis technique for different substrate type (glass, quartz, ITO). Absorption spectra were recorded from UV-Visible spectrophotometer in the range of 300-900 nm. The absorbance increased when the glass substrate replaced to quartz or ITO substrate, also this behavior for absorption coefficient and extinction coefficient. While the refractive index tack unstable behavior. The energy gap decreased from 2.4 eV for CdO thin film deposited on glass substrate to 2.36 eV for CdO thin film deposited on ITO substrate.
Źródło:
World Scientific News; 2016, 57; 41-47
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected implications of shale gas extraction in Europe
Autorzy:
Abramiuk -Lété, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/629915.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Handlowa w Warszawie
Tematy:
natural gas, shale gas, energy, security of supply, gas import, gas prices
Opis:
According to the 2011 International Energy Agency data, 60 % of natural gas production in the US comes from unconventional sources. Currently in Europe the commercial production of shale gas has not yet been developed. However, the European Commission estimates that conventional production in those countries which have already made some progress could already start as early as 2015. The 2013 A.T. Kearney report outlines that European resources constitute 7 % of world resources, but the success of shale gas exploration in Europe will depend on a series of economic, political and geographical factors. This paper analyses the potential impact of the development of the shale gas industry in Europe, particularly recoverable potential of shale gas, its impact on the economy, overall EU energy mix, energy prices and the European job market. In addition, the paper briefly discusses the potential impact of shale gas extraction on gas imports and security of supply.
Źródło:
Kwartalnik Kolegium Ekonomiczno-Społecznego Studia i Prace; 2014, 3; 145-158
2082-0976
Pojawia się w:
Kwartalnik Kolegium Ekonomiczno-Społecznego Studia i Prace
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novye idei dla povysenia energeticeskoj effektivnosti svetoprozracnych i fasadnych konstrukcij
New ideas to improve energy efficiency of transparent and facade constructions
Autorzy:
Achmarov, T. A.
Spiridonov, A. V.
Subin, I. L.
Powiązania:
https://bibliotekanauki.pl/articles/2065304.pdf
Data publikacji:
2015
Wydawca:
Politechnika Częstochowska
Tematy:
konstrukcje fasadowe
efektywność energetyczna budynku
okna
improve energy efficiency
transparent constructions
Opis:
V stat’e predstavleny novye idei dla povysenia energeticeskoj effektivnosti svetoprozracnych i fasadnych konstrukcij. Realizacia predlozennych energoeffektivnych ventiliruemych svetoprozracnych ograzdauscich konstrukcij mozet byt’ vypolnena prakticeski na vsech vidach okonnych sistem i profilej.
The paper presents new ideas to improve energy efficiency of transparent and facade constructions. The implementation of the proposed energy efficiency ventilated transparent constructions can be performed practically for all types of windows and profiles.
Źródło:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2015, 1 (15); 9--21
2299-8535
2544-963X
Pojawia się w:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sistemy energosberezenia s aktivnoj rekuperaciej tepla i vlagi dla energopassivnych zdanij
Energy saving systems with active heat and moisture recovery for passive buildings
Autorzy:
Achmarov, T. A.
Spiridonov, A. V.
Subin, I. L.
Powiązania:
https://bibliotekanauki.pl/articles/2065401.pdf
Data publikacji:
2015
Wydawca:
Politechnika Częstochowska
Tematy:
systemy energooszczędne
budynki pasywne
odzyskiwanie ciepła
active energy saving systems
passive buildings
recovery heat
Opis:
V stat’e predstavleny sistemy aktivnogo energosberezenia (SAE). K SAE otnosatsa sistemy, kotorye ispol’zuut vtoricnye energoresursy, netradicionnye i vozobnovlaemye istocniki energii, a takze avtoregulirovanie pri izmenenii uslovij snaruzi i vnutri zdanij.
The paper presents the active power system. This system includes secondary energy resources, alternative and renewable energy sources, as well as autoregulation conditions change on the outside and inside buildings.
Źródło:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2015, 1 (15); 22--32
2299-8535
2544-963X
Pojawia się w:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 7290

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