Performance improvement of the combined cycle power plant by intake air cooling using an absorption chiller

S. Boonnasa, P. Namprakai and T. Muangnapoh

Energy, 2006, vol. 31, issue 12, 2036-2046

Abstract: This paper studies how to improve the capacity of the combined cycle (CC) power plant which has been operated for 8 years. The most popular way is to lower intake air temperature to around 15°C (ISO) and 100% RH before entering the air compressor of a gas turbine (GT). Thailand has 3 seasons: winter, summer and rainy season. According to 2003 Bangkok monthly weather data, all year ambient temperature is higher than 15°C. This research proposes a steam absorption chiller (AC) to cool intake air to the desired temperature level. It could increase the power output of a GT by about 10.6% and the CC power plant by around 6.24% annually. In economic analysis, the payback period will be about 3.81 years, internal rate of return 40%, and net present value 19.44MUS$.

Keywords: Air cooler; Economics; Monthly analysis; Uncertainty; Gas turbine (search for similar items in EconPapers)
Date: 2006
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Citations: View citations in EconPapers (14)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:31:y:2006:i:12:p:2036-2046

DOI: 10.1016/j.energy.2005.09.010

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