Thermodynamics Modelling And Performance Assessment Of Gas Turbine Power Plant

Oyedepo S.O. Olayinka, R. O. Fagbenle, Adefila S. S., Alam M. M.

Abstract


In this study, thermodynamics modelling of gas turbine engine is performed based on thermodynamic relations. The thermodynamic model reveals that the influence of operating parameters including the compression ratio, turbine inlet temperature and ambient temperature has significant effect on the performance of gas turbine engine. Energy and exergy analyses were conducted to evaluate performance of the selected power plant and to assess the effect of operating parameters on energy loss and exergy destruction in the plant. Energy analysis shows that the turbine has the highest proportion of energy loss (31.98%) in the plant. The exergy analysis results reveal that the combustion chamber is the most exergy destructive component compared to other cycle components. In addition, it was found that increase in the gas turbine inlet temperature (GTIT) decreases the exergy destruction of this component. The effects of design parameters on exergy efficiency show that an increase in the compression ratio and TIT increase the total exergy efficiency of the cycle due to a rise in the output power of the turbine and a decrease in the combustion chamber losses. The overall exergetic efficiency of the plant decreased with increased ambient temperature. It was found that a 5 K rise in ambient temperature resulted in a 1.03% decrease in the overall exergetic efficiency of the plant. Based on the results of this research work, the possible economical methods and technologies to improve performance of the selected gas turbine power plant are suggested.

Key words: Thermodynamics model, energy analysis, exergy analysis, ambient temperature, gas turbine engine, simulation

Full Text:

PDF

References


Abam, F.I., Ugot, I.U and Igbong, D.I (2011), ‘Thermodynamic Assessment of Grid –

Based Gas Turbine Power Plants in Nigeria’, Journal of Emerging Trends in Engineering and Applied Sciences 2(6):1026 – 1033

Adrian, I and Dorin, L (2010), Thermodynamic Analysis of Gas Turbine Powered

Cogeneration Systems’, Journal of Scientific and Ind. Res., Vol. 69: 548 – 553

Alcides, C.N (1999), ‘Assessment of Novel Power Generation Systems for Biomass

Industry’, PhD Thesis, Cranfield University

Ameri M, Ahmadi P and Khanmohammadi S (2007), ‘Exergy analysis of a 420MW

combined cycle power plant’, Int. J. Energy Res. DOI: 10.1002/er.1351

Barzegar - Avval, H, Ahmadi, P, Ghaffarizadeh, A.R and Saidi, M.H (2011), ‘‘Thermo-

economic-environmental multi-objective optimization of a gas turbine power plant with preheater using evolutionary algorithm’, Int. J. Energy Res. 35:389–403

Bassily, A.M (2001), ‘Effects of evaporative inlet and after cooling on the

recuperated gas turbine cycle’, Applied Thermal Engineering 21 (18): 1875–1890.

Bejan, A; Tsatsaronis, G and Moran, M (1996), Thermal Design and Optimization, John

Wiley & Sons, Inc. New York

Bilgen, E (2000), ‘Exergetic and engineering analyses of gas turbine based cogeneration systems’,

Energy 25: 1215–1229

Chaker,M; Meher-Homji, C.B ; Mee, T and Nicholson, A (2003) ‘ Inlet fogging of gas

turbine engines detailed climatic analysis of gas turbine evaporation cooling potential in the USA’, Journal of Engineering for Gas Turbine and Power 125 :300–309.

Chen, Q, Han, W, Zheng, J, Sui, J and Jin, H (2014), ‘The exergy and energy level analysis of a

combined cooling, heating and power system driven by a small scale gas turbine at off design condition’, Applied Thermal Engineering 66:590 – 602

Eastop, T.D and McConkey, A (2009), Applied Thermodynamic for Engineering Technologists

(5th Ed.), Pearson Educational Ltd., India, Pp 290

Ebadi, M.J and Gorji – Bandpy (2005), ‘Exergetic Analysis of Gas Turbine Plants’, Int. J

Exergy, 2: 31 – 39

Erdem H A and Sevilgen H S (2006), ‘Case study: effect of ambient temperature on the

electricity production and fuel consumption of simple cycle gas turbine’, , applied

thermal engineering 26: 230-236

Gareta, R; Romeo, L. M; Gil, A (2005). Economic optimization of gas turbine inlet

air—cooling systems in combined cycle applications, Center for Power Plant Efficiency Research’, ECOS, Vol. 1: 409–415.

Ghazikhani, M, Khazaee I and Abdekhodaie, E (2014), ‘Exergy analysis of gas turbine with air

bottoming cycle’, Energy 72: 599 – 607

Guinee J.B (2001),(Ed.), Life cycle assessment : an operational guide to the ISO standards;

LCA in perspective; guide; operational annex to guide. The Netherlands: Centre for Environmental Science, Leiden University.

Hall A.D; Stover, J.C and Breisch R.B (1994), ‘Gas turbine inlet-air chilling at a

cogeneration facility’, ASHRE Transactions 100 , Part 1.

Jaber, Q.M; Jaber, J.O and Khawaldah, M.A (2007), “Assessment of Power Augmentation

from Gas Turbine Power Plants Using Different Inlet Air Cooling Systems”, Jordan Journal of Mechanical and Industrial Engineering, Vol 1,No 1, pp7-15.

Kakaras E, Doukelis A and Karellas S (2004), ‘Compressor intake-air cooling in gas

turbine plants’, Energy, 29: 2347-2358.

Kamal N. A. and Zuhair A. M. (2006), ‘Enhancing Gas Turbine Output Through Inlet Air

Cooling’,Sudan Engineering Society Journal, 52(46), pp 1-8.

Khaldi, F and Adouane, B (2011), ‘Energy and exergy analysis of a gas turbine power plant in

Algeria’, Int. J. Exergy, 399 – 413

Kotas, T. J (1995), ‘The exergy method of thermal plant analysis’, Krieger Publishing

Company, Malabar, Florida

Kreith F and Goswanni, Y.D(Ed.) (2005), The CRC Handbook of Mechanical Engineering

(2nd Edition), CRC Press

Kurt, H., Recebli, Z and Gredik, E (2009), ‘Performance analysis of open cycle gas turbines’,

International Journal of Energy Research, 33(2):285–294.

Lior, N and Zhang, N (2007), ‘Energy, exergy, and Second Law performance criteria, Energy 32:

–296

Mahmoudi S.M, Zare V, Ranjbar F and Farshi L (2009), ‘Energy and exergy analysis of

simple and regenerative gas turbines inlet air cooling using absorption refrigeration’, J. Appl. Sci., 9(13): 2399-2407.

Mirandola, A; Stoppato, A and Tonon, S (2000), “ An Integrated Approaches to the

Assessment of Energy Conversion Plants, Int. J. Applied Thermodynamics Vol. 3 (3): 111 – 119

Mozafari, A., Ahmadi, A. and Ehyaei, M.A. (2010) ‘Optimisation of micro gas turbine by

exergy, economic and environmental (3E) analysis’, Int. J. Exergy, Vol. 7, No. 1, pp.1–19.

Nag, P.K (2008), Power plant engineering, New Delhi: Tata McGraw-Hill Publishing

Company Limited

Oh, S.D, Pang, H., Kim, S. and Kwak, H. (1996), ‘Exergy analysis for a gas-turbine

cogeneration system’, Journal of Engineering for Gas Turbine and Power, Vol. 118, pp.782 - 791.

Oyedepo, S.O and Kilanko, O (2014), ‘Thermodynamic Analysis of a Gas Turbine Power Plant

Modeled with an Evaporative Cooler’, International Journal of Thermodynamics (IJoT) Vol. 17 (No. 1), pp. 14 – 20.

Oyedepo, S.O (2014), Thermodynamic Performance Analysis of Selected Gas Turbine Power

Plants in Nigeria, Ph.D Thesis, Covenant University, Ota, Nigeria.

Ray, T.K, Ganguly, R and Gupta, A (2007), ‘Exergy Analysis for Performance Optimization of a

Steam Turbine Cycle’, IEEE PES Power Africa 2007 Conference and Exposition Johannesburg, South Africa, 16-20 July 2007, pp 1 – 8

Rajput, R.K (2007), Engineering Thermodynamics (S.I Units), LAXMI PUBLICATIONS (P)

LTD 113, Golden House, Daryaganj, New Delhi-110002

Reddy, V.S, Kaushik, S.C and Panwar, N. L (2013), ‘Review on power generation scenario of

India, Renewable and Sustainable Energy Reviews 18: 43–48

Sadrameli S.M and Goswami D.Y (2007), ‘Optimum operating conditions for a

combined power and cooling thermodynamic cycle’, Appl. Ener., 84: 254-265.

Tahouni N., Jabbari B. and Panjeshahi M. H., (2012), ‘Optimal design of a cogeneration

system in a kraft process using genetic algorithm’, Chemical Engineering Transactions, 29, 19-24

FTT (Florida Turbine Technologies. Inc.) (2009), Turbine Efficiency Improvements for Existing

Power Plants, pp 1 - 8




DOI: https://doi.org/10.37628/jiegt.v1i1.110

Refbacks

  • There are currently no refbacks.