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 EPE  Vol.5 No.6 , August 2013
Studying the Role Played by Evaporative Cooler on the Performance of GE Gas Turbine Existed in Shuaiba North Electric Generator Power Plant
Abstract: It’s well known that the performance of a gas turbine (efficiency, heat rate and power generated) is largely dependent on mass flow rate of air, inlet air temperature and turbine inlet temperature (TIT). As turbine inlet temperature is dependent on quantity of burned fuel so that this factor is dropped out from this paper. It’s also known that gas turbines are constant volume machines i.e. at a given shaft speed they always move the same volume of air, but the power out-put of a turbine depends on the flow of mass through it. This is precisely the reason why on hot days, when air is less dense, power output falls off. A rise of one degree Centigrade temperature of inlet air decreases the power output by 1% and at the same time heat rate of the turbine also goes up. This is a matter of great concern to power producers. Many techniques have been developed to cool the inlet air to gas turbine. Some of these techniques to decrease the inlet air temperature are discussed here. The evaporative cooling technique is taken as a case study in this paper. A comparative studying is carried out between a unit using this technique and the same unit when the evaporative cooler is idle. The results advert to an increase in power output by 11.07% and a decrease in heat rate by approximately 4% when inlet air temperature drops from 50°C to 26°C.
Cite this paper: AL-Hamdan, O. and Saker, A. (2013) Studying the Role Played by Evaporative Cooler on the Performance of GE Gas Turbine Existed in Shuaiba North Electric Generator Power Plant. Energy and Power Engineering, 5, 391-400. doi: 10.4236/epe.2013.56041.
References

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[2]   M. Chaker, C. B. M. Homji and Thomas Mee III, “Inlet Fogging of Gas Turbine Engines,” Proceedings of ASME Turbo Expo 2001, 4-7 June 2001, New Orleans.

[3]   C. B. M. Homji and Thomas Mee III, “Inlet Fogging of Gas Turbine Engines—Part B: Practical Considerations, Control, and O&M Aspects,” Proceedings of ASME Turbo Expo 2000, 8-11 May 2000, Munich.

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[5]   P. K. Patel, “Better Power Generation from Gas Turbine along With Improved Heat Rate,” 2003.

[6]   J. Petek and P. Hamilton, “Performance Monitoring of Gas Turbine,” GE Energy, Vol. 25, No. 1, 2005.

[7]   Shuaiba North Power Plant Operation Manual, “Evaporative Cooler Operation & Maintenance”.

[8]   http://oilprice.com/Energy/Oil-Prices/Natural-Gas-Analysis-for-the-Week-of-January-23-2012.html

 
 
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