Wszystkie pola: power plant efficiency - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Maximisation of Combined Cycle Power Plant Efficiency
Maksymalizacja sprawności elektrowni gazowo-parowych
Autorzy:: Kotowicz, J.
Job, M.
Brzęczek, M.
Powiązania:: https://bibliotekanauki.pl/articles/397508.pdf
Data publikacji:: 2015
Wydawca:: ENERGA
Tematy:: combined cycle power plant
turbine cooling
thermodynamic optimisation
elektrownia gazowo-parowa
chłodzenie turbiny
optymalizacja
Opis:: The paper presents concepts for increasing the efficiency of a modern combined cycle power plant. Improvement of gas turbine performance indicators as well as recovering heat from the air cooling the gas turbine’s flow system enable reaching gross electrical efficiencies of around 65%. Analyses for a wide range of compressor pressure ratios were performed. Operating characteristics were developed for the analysed combined cycle plant, for different types of open air cooling arrangements of the gas turbine’s expander: convective, transpiration and film.
W artykule przedstawiono koncepcje zwiększenia sprawności nowoczesnej elektrowni gazowo-parowej. Poprawa charakterystyk pracy turbiny gazowej oraz wykorzystanie ciepła powietrza chłodzącego układ przepływowy turbiny gazowej pozwalają na osiągnięcie sprawności elektrycznej brutto rzędu 65%. Analizy przeprowadzono w szerokim zakresie stopni sprężania w kompresorze. Sporządzono główne charakterystyki pracy analizowanego układu gazowo-parowego dla różnych typów chłodzenia otwartego powietrzem ekspandera turbiny gazowej: konwekcyjnego, transpiracyjnego oraz błonowego.
Źródło:: Acta Energetica; 2015, 4; 42-53
2300-3022
Pojawia się w:: Acta Energetica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The improvement of environmental characteristics of the combined cycle power plant by the implementation of the carbon capture installation
Autorzy:: Kotowicz, J.
Brzęczek, M.
Job, M.
Powiązania:: https://bibliotekanauki.pl/articles/134906.pdf
Data publikacji:: 2015
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: combined cycle power plant
post-combustion technology
chemical absorption
carbon capture installation
power plant efficiency
ecological characteristics
Opis:: The paper describes a combined cycle power plant with carbon capture installation in a post-combustion technology. Carbon dioxide is separated from flue gas by using a chemical absorption method with monoethanolamine (MEA) as a sorbent. Separated carbon dioxide is compressed in order to prepare for transportation to the storage place. This paper identifies the electric efficiencies and other characteristic parameters of power plants before and after implementation of CO2 capture installation, as well as the power plant efficiency drop, and the improvement of ecological characteristics related to the implementation of this installation. The implementation of the installation described herein is associated with the efficiency loss caused by the auxiliary power for additional installations. The CO2 separation installation is powered by heat energy required for reclaiming the sorbent. This energy is taken in the form of steam extracted from the steam cycle, thus reducing the steam turbine power output, while the CO2 compression installation is powered by electric energy.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 44 (116); 19-24
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Thermodynamic analysis of a combined cycle power plant located in Jordan: A case study
Autorzy:: Bataineh, Khaled
Khaleel, Bara A.
Powiązania:: https://bibliotekanauki.pl/articles/240565.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: combined cycle power plant
energy efficiency
exergy efficiency
exergy destruction
exergy losses
Opis:: Efficiency and electrical power output of combined cycle power plants vary according to the ambient conditions. The amount of these variations greatly affects electricity production, fuel consumption, and plant incomes. Obviously, many world countries have a wide range of climatic conditions, which impact the performance of power plants. In this paper, a thermodynamic analysis of an operating power plant located in Jordan is performed with actual operating data acquired from the power plant control unit. The analysis is performed by using first and second laws of thermodynamics. Energy and exergy efficiencies of each component of the power plant system are calculated and the effect of ambient temperature on the components performance is studied. The effects of gas turbine pressure ratio, gas turbine inlet temperature, load and ambient conditions on the combined cycle efficiency, power outputs and exergy destruction are investigated. Energy and exergy efficiencies of the combined cycle power plant are found as 45.29%, and 42.73% respectively when the ambient temperature is 34°C. Furthermore, it is found that the combustion chamber has the largest exergy destruction rate among the system components. The results showed that 73% of the total exergy destruction occurs in the combustion chamber when the ambient temperature is 34°C. Moreover, the results show that the second major exergy loss is in HRSC. The results show that the energy and exergy efficiency of the combined cycle power plant decreases as the ambient temperature increases. According to the calculation results, improvement and modification suggestions are presented.
Źródło:: Archives of Thermodynamics; 2020, 41, 1; 95-123
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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