Evaluation of the optimum pressures of gas turbines based on energy and exergy analyses


1 School of Mechanical Engineering, University of Bonab, Bonab. Iran

2 Energy Management Group, Energy and Environment Research Center, Niroo Research Institute, Tehran, Iran

3 School of Mechanical and Mechatronic Engineering, University of Technology Sydney (UTS), Sydney, Australia


The irreversible Brayton cycle is usually used in gas turbine-based power plants. In this study, energy and exergy analysis has been performed for an irreversible Brayton cycle with a regenerator, reheater, and intercooler for the first time. The influence of different parameters such as the efficiency of the cycle's components is examined based on the first and the second laws of thermodynamics. The lost exergy in different components and the total exergy loss of the irreversible Brayton cycle are calculated for various conditions. The optimum pressure of the intercooler and the reheater is obtained for different cases. An irreversible Brayton cycle with regenerator, reheater, and intercooler is simulated in engineering equation solver software and the optimum pressure in each simulation is determined based on the first and the second laws of thermodynamics. Furthermore, the obtained optimum pressures are compared with the geometric mean of the low and the high pressure of the cycle in each simulation. 


[1] Tohid Adibi, Omid Adibi, A. Amrikachi, Investigation on the possibility of substituting compression cooling cycle with a solar absorption cooling cycle in tropical regions of Iran, European Journal of Electrical Engineering 19(1) (2017) 7-17.
[2] H. Ghaebi, P. Seyedmatin, Cogeneration of power and hydrogen using Scramjet cooling system :Energy and exergy analyses, Energy Equipment and Systems 9(3) (2021) 229-248 DOI: 10.22059/ees.2021.246032.
[3] A. Ghaseminejad, E. Hajidavalloo, A. Azimi, Modeling, analyses, and assessment of a liquid air energy storage (LAES) system, Energy Equipment and Systems 9(3) (2021) 249-260 DOI: 10.22059/ees.2021.246033.
[4] T. Adibi, Evaluation of using solar ammonia absorption cooling system for major cities of the Middle East, International Journal of Heat and Technology 36(3) (2018) 840-846 DOI: 10.18280/ijht.360309.
[5] S. Xiao, X. Chen, L. Qi, Y. Liu, Analysis of a supercritical organic Rankine cycle for low-grade waste heat recovery, Proceedings of the Institution of Civil Engineers - Energy 173(1) (2020) 3-12 DOI: 10.1680/jener.19.00025.
[6] S.K. Yekani, E. Abdi Aghdam, F. Sadegh Moghanlo, Experimental study of The Performance and e xhaust gas emissions Response of A Spark Ignition Engine to Adding Natural Gas to Gasoline in CR=11, International Journal of Industrial Mathematics 11(4) (2019) 307-317.
[7] I. Fakhari, P. Behinfar, F. Raymand, A. Azad, P. Ahmadi, E. Houshfar, M. Ashjaee, 4E analysis and tri-objective optimization of a triple-pressure combined cycle power plant  with combustion chamber steam injection to control NOx emission, Journal of Thermal Analysis and Calorimetry 145(3) (2021) 1317-1333 DOI: 10.1007/s10973-020-10493-5.
[8] A. Ebrahimi-Moghadam, M. Farzaneh-Gord, Energy, exergy, and eco-environment modeling of proton exchange membrane electrolyzer coupled with power cycles: Application in natural gas pressure reduction stations, Journal of Power Sources 512 (2021) 230490 DOI: https://doi.org/10.1016/j.jpowsour.2021.230490.
[9] F. Rezaei, S.M. Ebrahimi Saryazdi, Y. Saboohi, Optimal detailed design and performance assessment of natural gas pressure reduction stations system equipped with variable inlet guide vane radial turbo-expander for energy recovery, Journal of Natural Gas Science and Engineering  (2021) 104222 DOI: https://doi.org/10.1016/j.jngse.2021.104222.
[10] L. Chen, W. Wang, F. Sun, C. Wu, Closed intercooled regenerator Brayton-cycle with constant-temperature heat-reservoirs, Applied Energy 77(4) (2004) 429-446 DOI: http://dx.doi.org/10.1016/S0306-2619(03)00154-5.
[11] V.M.G.S.D.B.G.Š.J. Bielskus, Functional exergy efficiency of an air heat recovery exchanger under varying environmental temperature, International Journal of Exergy 25(2) (2018) 93 - 116.
[12] B. Değerli;, M. Özilgen, The mode of interaction of the constituents of a microbial system determines the attainable exergy utilisation, International Journal of Exergy 25(2) (2018) 132 - 151.
[13] M. Yilanli;, Ö. Altuntaş;, E. Açıkkalp;, T.H. Karakoc, Aircraft fuel system energy and exergy analysis under hot day conditions, International Journal of Exergy 25(2) (2018) 152 - 167.
[14] I. Fakhari, P. Peikani, M. Moradi, P. Ahmadi, An investigation of optimal values in single and multi-criteria optimizations of a solar boosted innovative tri-generation energy system, Journal of Cleaner Production 316 (2021) 128317 DOI: https://doi.org/10.1016/j.jclepro.2021.128317.
[15] M. Ashouri, M.H. Ahmadi, M. Feidt, F.R. Astaraei, Exergy and energy analysis of a regenerative organic Rankine cycle based on flat plate solar collectors, Mechanics & Industry 18(2) (2017) 217.
[16] M.A. Ahmadi, M. Ashouri, S.A. Sadatsakkak, M.H. Ahmadi, Optimization performance of irreversible refrigerators base on evolutionary algorithm, Mechanics & Industry 17(2) (2016) 209.
[17] S. Elahifar, E. Assareh, M. Nedaei, Exergy analysis and optimization of the Rankine cycle in steam power plants using the firefly algorithm, Mechanics & Industry 19(5) (2018) 505.
[18] M.H.K. Manesh, M.A. Rosen, Combined Cycle and Steam Gas-Fired Power Plant Analysis through Exergoeconomic and Extended Combined Pinch and Exergy Methods, Journal of Energy Engineering 144(2) (2018) 04018010 DOI: doi:10.1061/(ASCE)EY.1943-7897.0000506.
[19] L.E. Lingo, U. Roy, Design for Implementation Strategy for Designing a Sustainable Building Using the Geosolar Exergy Storage Technology: Case Study, Journal of Energy Engineering 141(3) (2015) 04014018 DOI: doi:10.1061/(ASCE)EY.1943-7897.0000175.
[20] M. Atif, F.A. Al-Sulaiman, Energy and Exergy Analyses of Recompression Brayton Cycles Integrated with a Solar Power Tower through a Two-Tank Thermal Storage System, Journal of Energy Engineering 144(4) (2018) 04018036 DOI: doi:10.1061/(ASCE)EY.1943-7897.0000545.
[21] N.R. Kumar, K.R. Krishna, A.V.S.R. Raju, Performance Improvement and Exergy Analysis of Gas Turbine Power Plant with Alternative Regenerator and Intake Air Cooling, Energy Engineering 104(3) (2007) 36-53 DOI: 10.1080/01998590709509498.
[22] S.O. Oyedepo, R.O. Fagbenle, S.S. Adefila, M.M. Alam, Performance evaluation of selected gas turbine power plants in Nigeria using energy and exergy methods, World Journal of Engineering 12(2) (2015) 161-176 DOI: 10.1260/1708-5284.12.2.161.
[23] Z. Hajabdollahi, H. Hajabdollahi, 4E analysis and multi-objective optimization of gas turbine CCHP plant with variable ambient temperature, Energy Equipment and Systems 5(3) (2017) 285-298 DOI: 10.22059/ees.2017.27569.
[24] A. Noorpoor, P. Heidarnejad, N. Hashemian, A. Ghasemi, A thermodynamic model for exergetic performance and optimization of a solar and biomass-fuelled multigeneration system, Energy Equipment and Systems 4(2) (2016) 281-289 DOI: 10.22059/ees.2016.23044.
[25] P. Hanafizadeh, P. Maghsoudi, Exergy , economy and pressure drop analyses for optimal design of recuperator used in microturbine, Energy Equipment and Systems 5(2) (2017) 95-113 DOI: 10.22059/ees.2017.25717.
[26] T. Adibi, R.A. Kangarluei, S. Karamjavani, B. Rosoly, Investigating Effect of Intercooler on Performance and Efficiency of Brayton Cycle in Ideal and Non-ideal Condition, International Journal of Science, Engineering and Technology Research 6(4) (2017).