Typical Characteristics of Gas Turbine-Based CCHP System with Inlet Air Cooling

Author

Zeng, Fei ; Yang, Cheng ; Yang, Zeliang

Author_Institution

Coll. of Electr. Power, South China Univ. of Technol., Guangzhou, China

fYear

2011

fDate

25-28 March 2011

Firstpage

1

Lastpage

4

Abstract

Gas turbine-based CCHP system performance is strongly influenced by the ambient conditions. Gas turbine inlet air cooling technology improves gas turbine performance and its integrated CCHP system performance as well. Using the typical analytical characteristics of the system components, i.e. , small-sized gas turbine, single pressure HRSG and double-effect water/LiBr absorption chiller, this paper investigated the effect of gas turbine inlet air cooling on the operation performance of an integrated CCHP system. Thermal efficiency, equivalent exergy efficiency and economic exergy efficiency of the system were also discussed. The results indicate that, every 1°C increase in gas turbine inlet air temperature averagely results in 0.879% decrease in power capacity, 0.282% decrease in heat capacity and 0.205% decrease in cooling capacity. Gas turbine inlet air cooing influences the CCHP thermal efficiency and economic exergy efficiency slightly, even brings out a negative increase.

Keywords

combined cycle power stations; cooling; exergy; gas turbines; specific heat; ambient conditions; cooling capacity; economic exergy efficiency; equivalent exergy efficiency; gas turbine-based CCHP system; heat capacity; inlet air cooling; integrated CCHP system performance; power capacity; thermal efficiency; Absorption; Cooling; Economics; Energy efficiency; Heating; Temperature; Turbines;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific

Conference_Location

Wuhan

ISSN

2157-4839

Print_ISBN

978-1-4244-6253-7

Type

conf

DOI

10.1109/APPEEC.2011.5748589

Filename

5748589