Abstract—Increase demand of power during peak load hours
necessitates the need to raise gas turbine power plant
performance especially in a region or station with persistant
high temperature and low relative humidity, in this paper
climatic data of some particular stations in Nigeria were
modeled, cooling degre-hours obtained were simulated on
brayton simple cycle and evaporative cooling of gas turbine,
performance effects were studied and presented, the results
shows an increase in the gas turbine power and efficiency and
decrease of compression work on the compressor, evaporative
cooling retain the net output power of the gas turbine to 25.86
MW at higher temperature when the demand is at peak and
increases the efficiency to 29.8 MW when the demand is low
and the ambient temperature at lowest level. Cooling
degree-hours decrease with increase in base temperature and
with known cooling degree-hours in a station,net power can not
only be boost but the operational cost of evaporative cooling of
gas turbine can be reduce.
Index Terms—Evaporative cooling, cooling degree-hours,
climate and gas turbine.
The authors are with Harbin Engineering University, China (e-mail:
nagari2010@gmail.com).
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Cite:Dayyabu Gambo Kofar-Bai and Qun Zheng, "Climate Effects on Cooling Degree-Hours and Evaporative Cooling of Gas Turbine," Journal of Clean Energy Technologies vol. 5, no. 5, pp. 347-352, 2017.