THERMODYNAMIC ANALYSIS OF COMPRESSOR INLET AIR PRECOOLING TECHNIQUES OF A GAS TURBINE PLANT OPERATIONAL IN NIGERIA ENERGY UTILITY SECTOR
Thermodynamic analysis of inlet air pre-cooling techniques of compressor is among the methods for the enhancement of gas turbine performance. This study compared the effect of using evaporative cooling system pre-cooling method, vapour compression refrigeration precooling and vapour absorption refrigeration precooling techniques to the gas turbine Net Power Output, Thermal efficiency, Thermal Efficiency Change factor (TEC) and Power Gain Ratio (PGR) taking into recognition the prevalent weather and climatic conditions of Nigeria and as well as optimization parameters for the reference system (i.e. without precooling techniques). The results show that at air temperature of 311K, the reference system, evaporative precooling, vapour compression refrigeration and vapour absorption refrigeration precooling methods recorded Net power Outputs of 23.143MW, 25.39MW, 31.84MW and 34.90MW respectively. The Thermal Efficiency Change factor recorded by the precooling systems at an ambient temperature of 311K is 8.68%, 37.4% and 51% respectively.
Abam FI, Ugot J, Igbong DJ. Performance analysis and component irreversibilities of a 25 MW gas turbine power plant modeled with a spray cooler. American J. of Engineering and Applied Sciences. 2012;5:35-41.
Abam FI, Ugot J, Igbong D.J. Thermodynamic. assessment of grid-based gas turbine power plants in Nigeria. J. Emerging Trends Eng. Applied Sci. 2011; 2:1026-1033.
Cortes CR, Williams DF. Gas turbine inlet air cooling techniques: An overview of current technologies. Power Gen. International, 200; 3Las Vegas Neva, USA.
Shanbghazani M, khalilarra S, Mizael I. Energy analysis of a gas turbine system with evaporative cooling at compressor inlet. Int. J. Exergy. 2008; 5:309325. DOI:10.1504/IJEX.2008.018113. DOI: https://doi.org/10.1504/IJEX.2008.018113
Dawoud B, Zurigat YH, Bortmany J. Thermodynamic assessment of power requirements and impact of different gas – turbine inlet air cooling techniques at two different locations in Omar. Journal of Applied thermal Engineering. 2005; 25:1579-1598. DOI: https://doi.org/10.1016/j.applthermaleng.2004.11.007
Rahim KJ, Majed MA, Galal MZ. Energy, Exergy and thermoeconomics analysis of water chiller cooler for gas turbine intake air precooling. American Journal of thermal Engineering. 2008; 5:38-44.
Alhamzy MM, Naijar YSH. Augemntation of gas turbine performance using air coolers. Journal of Applied Thermal Engineering. 2004; 24:425-429.
Mohapatra AK, Prasad L. Parametric analysis of cooled gas turbine cycle with evaporative inlet air precooling. International Journal of Scientific and Engineering Research. 2012; 3:2229-5518.
Copyright (c) 2020 Victor Okafor
This work is licensed under a Creative Commons Attribution 4.0 International License.
Please read copyrigth agreement care fully:-