The result of this study shows the performance of Ihovbor Gas Power Plant in Benin, Edo State Nigeria using first and second law of thermodynamics. Analysing the efficiency of the plant using first law of thermodynamics showed that with increase in inlet air temperature, the energy conversion efficiency of the plant reduces. The exergy efficiency of the plant also confirmed that increase in inlet air temperature results in decrease of the exergetic efficiency of the plant. Analysis of each of the components showed the greatest destruction of exergy was in the combustion chamber while the least is the Gas turbine section. Using numerical method in analyzing the gas turbine plant when retrofitting with an evaporative inlet air cooler showed better performance in energy conversion as power generation increased with an average of 1% per 1oC degree fall in temperature, the work ratio and thermal efficiency of the plant also increased. The analysis of the modified plant using second law of thermodynamics showed an increase in magnitude of both the exergy destroyed and the efficiency of the plant. Analysis showed that integrating evaporative cooler as component of the inlet air cooler increases the efficiency of the Air compressor by over 0.8% thus increasing the plant’s exergetic efficiency.
R. Poku, E.A. Ogbonnaya, “Effects of Evaporative Cooling on the Performance of a Gas Turbine Plant Operating in Bayelsa State, Nigeria,” International Journal of Engineering and Technology Volume 4 No. 8, pp. 476-482, August 2014.
F.J Brooks, GE Gas Turbine Performance Characteristics, GE Power systems, New York, 2010, pp. 1-16.
A. P. Santos, C. R. Andrade,“Analysis of Gas Turbine Performance with Inlet Air Cooling Techniques Applied to Brazilian Sites,” J. Aerosp. Technol. Manag., São José dos Campos, Vol.4, No 3, pp. 341-353, Jul-Sep 2012
T. K Ibrahim, M.M Rahman, A. N. Abdalla, “Improvement of gas turbine performance based on inlet air cooling systems: A Technical Review, ” International journal of physical sciences, Vol 6 No 4, pp. 620-627, Feb. 2012.
B.T. Lebele-Alawa, J.M. Asuo, “Exergy Analysis of Kolocreek Gas-Turbine Plant, ” Canadian Journal on Mechanical Sciences & Engineering Vol. 2 No. 8, pp. 172-184, Dec 2011.
A. Mousafarash, M. Ameri, “Exergy and exergo-economic based analysis of a gas turbine power generation system, ” Journal of Power Technologies Vol 93, pp. 44–51, Jan. 2013
S.O. Oyedepo, R. O. Fagbenle, S. S. Adefila, and M. M. Alam, “Exergy costing analysis and performance evaluation of selected gas turbine power plants, ” Cogent Engineering, Vol 2 No 1, pp. 1-21 Nov 2015.
A. Bejan, “Fundamentals of Exergy Analysis, Entropy Generation Minimization, and the Generation of Flow Architecture, ” International Journal of Energy Research, Vol. 26, No. 7, pp. 545-565 June 2002.
H. Kim, H. Ko and H. Perez-Blanco, “Exergy analysis of gas-turbine systems with high fogging compression, ” International Journal of Exergy, Vol 8 Issue 1, pp. 6–32, Jan 2011.
H.O. and Egware, A.I. Obanor, “Exergy Analysis of Omotosho Phase I Gas Thermal Power Plant” International Journal of Energy and Power Engineering, Vol. 2 No. 5 pp. 199-203, Nov. 2013
F.A. Abam, I. U. Ugot., and D. I. Igbong, “Performance Analysis and Components Irreversiblities of a (25 MW) Gas Turbine Power Plant Modeled with a Spray Cooler, ” American Journal of Engineering and Applied Sciences Vol 5, pp. 35-41, Feb. 2012.
H. Athari, S. Soltani, M. Rosen, S. Mahmoudi, and T. Morosuk, “Comparative Exergoeconomic Analyses of Gas Turbine Steam Injection Cycles with and without Fogging Inlet Cooling, ” Sustainability, Vol 7 pp. 12236–12257, Sept. 2015.
M. Ameri, P. Ahmadi, and A. Hamidi, “Energy, Exergy and Exergoeconomic Analysis of a Steam Power Plant: A case study, ” International Journal of Energy Resarch , Vol. 33 pp. 499-512, April 2009.
O. O. Ighodaro, B. A. Aburime, “Exergetic Appraisal of Delta IV Power Station, Ughelli, ” Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS) Volume 2, Issue 2 pp. 216-218 April 2011.
H.A. Arangi, P. Sivaram and H.N. Babu, “Analysis of Inlet Air Temperature Effect on Gas Turbine Compressor Perfornance, ” International Research Journal of Engineering and Technology Volume: 2 Issue: 8 pp. 845-853 Nov. 2015.
R.H. Perry, D.W. Green, Perry’s Chemical Engineering Handbook 8th Edition McGraw-Hill, New York 1997 ch 10, pp.20-67
Y.A. Cengel, M.A. Boles, Thermodynamics: An Engineering Approach 7th Edition; Mcgraw Hill, New York 2011 ch 15, pp. 751-792
H. Saravanamuttoo, H. Cohen, G.F.C. Roger, Gas Turbine Theory, ”5th edition, Pearson Education Ltd, England 1996 ch 6 pp. 233-267 .
M.A. Ehyaei, A. Mozafari, M.H. Alibiglou, “Exergy, economic & environmental (3E) analysis of inlet fogging for gas turbine power plant, ” Energy Vol. 36, Issue 12, pp. 6851-6861, Dec. 2011.
R. Ranu, K. Arif, “Analysis of Effects of Evaporative Inlet Cooling on Gas Turbines", International Journal of Engineering Trends and Technology (IJETT), Vol 37, No. 2, pp. 57-61 July 2016.
K.Y. AL-Salman, Q.A. Rishack, S.J. AL-Mousawi, “Parametric Study of Gas Turbine Cycle with Fogging System,” J.Basrah Researches (Sciences) Vol. 33, No.4, pp. 16 -30, Dec. 2007.
M. Ali, H. Abdalla, “Thermo-Economic Analysis of inlet Air Cooling in Gas Turbine Plants, ” Journal of Power Technologies Vol 93, No. 2, pp. 90-99, 2013.
M. Musa, “Novel evaporative cooling systems for building applications, ” PhD thesis, The School of the Built Environment, The University of Nottingham, 2009
A. Vosough, A. Noghrehabadi, M. Ghalambaz and S. Vosough, “Exergy Concept and its Characteristic,” International Journal of Multidisciplinary Sciences and Engineering, Vol. 2, No. 4, pp. 47-52 July 2011.
P.I. Ochornma, “Comparative Energy and Exergy Analysis of Ihovbor Gas Power Plant With/Without Retrofitted Inlet Air Cooler, ” M.Eng Project; Department of Mechanical Engineering, University of Benin, Edo State, 2017
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