Influence of environmental temperature on exergetic parameters of a combined cycle power plant

Autor: Muhsin Kilic, Ümit Ünver
Přispěvatelé: Uludağ Üniversitesi/Mühendislik Mimarlık Fakültesi/Makine Mühendisliği Bölümü., Kılıç, Muhsin, O-2253-2015
Rok vydání: 2017
Předmět:
System
Optimization
Exergy
Combined cycle exergy
Power station
Steam turbine efficiency
Cogeneration power plants
Combined cycle
Performance
020209 energy
Combined cycle power plants
Thermodynamics
02 engineering and technology
law.invention
Cogeneration
law
0202 electrical engineering
electronic engineering
information engineering
Thrust specific fuel consumption
Process engineering
Environmental temperature
Specific fuel consumption
Energy
business.industry
Load following power plant
Gas turbine efficiency
Bottoming cycle
Temperature
Turbine efficiency
Availability
Gas-turbine
Energy & fuels
Combined heat
Algorithm
Exergy analysis
Base load power plant
General Energy
Second law of thermodynamics
Peaking power plant
Exergoeconomic analysis
Environmental regulations
Environmental science
business
Gas Turbines
Gas
Air Cooling
Zdroj: International Journal of Exergy. 22:73
ISSN: 1742-8300
1742-8297
DOI: 10.1504/ijex.2017.081202
Popis: Ambient conditions have significant effect on combined cycle power plants (CCPPs). Parameters-like efficiencies, fuel consumption, power production and even operation cost differ according to the ambient conditions that depend on the climate that cannot be changed. Therefore, deciding the location of the plant wisely would bring more efficient and profitable. In this paper, exergy analysis based on the second law of thermodynamics, considering environmental temperature variations, are performed for a cogeneration power plant. Mathematical model of analyse is introduced. Magnitudes of the variation of irreversibility, reversible power, power production and specific fuel consumption (SFC) are evaluated for the combined cycle. The results indicated that, decrease of environmental temperature augments the energy performance of the combined cycle form about 53% to 56% and improves the exergetic performance from about 51% to 56%. However, the augmentation via temperature decrease is not continuous. It is shown that the environmental temperature decrease causes a reduction about 5% in the SFC.
Databáze: OpenAIRE
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