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Numerical and Thermodynamic Study of a Gas Turbine Cycle with Evaporative Cooling | ||
| AUT Journal of Mechanical Engineering | ||
| مقاله 9، دوره 6، شماره 2، شهریور 2022، صفحه 279-292 اصل مقاله (1.46 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajme.2022.19980.5978 | ||
| نویسندگان | ||
| Ghodrat Ghassabi* ؛ Seyyed Ehsan Shakib؛ Mohammad Ebadian | ||
| Department of Mechanical Engineering, Bozorgmehr University of Qaenat, Qaen, Iran | ||
| چکیده | ||
| It has been demonstrated that thermal efficiency can be improved and Nox emission can be reduced in gas turbine cycles by inlet air evaporative cooling. For this method, few studies have been performed using numerical simulations due to the complexity of the combustion and evaporation process. This study numerically and thermodynamically investigated the effect of inlet evaporative cooling on the thermal efficiency and NOx emission of a V94.2 gas turbine. The compressor and turbine are simulated using thermodynamic modeling. However, thermodynamic modeling could be able to calculate the temperature only at the inlet and outlet of devices. Analysis of evaporating cooling effect on combustion chamber temperature distributions and species distribution could be achieved by numerical method. Therefore, the combustion chamber was simulated by numerical modeling using Ansys Fluent 16. The process was simulated at four humidity ratios, including, 0, 25%, 50%, and 75%. Combustion was assumed to occur in a diffusion-type flame. The mass flow rate of fuel and air was 3.64 kg/s and 214.2 kg/s, respectively. Results show that Numerical and thermodynamic solutions have a good agreement with the empirical result. Also, it is observed that the accuracy of the numerical solution is better than the thermodynamic solution. Results indicated a 0.44% improvement in thermal efficiency and a considerable 33.5% reduction of NOx emission at the highest humidity ratio. | ||
| کلیدواژهها | ||
| NOx؛ Turbulent flame؛ Thermal efficiency؛ Humidity ratio | ||
| مراجع | ||
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[1] B. O, Efficiency improvement and superiority of steam injection in gas turbines, Energy Convers Manag 22 (1982) 13-18.
[2] K.S. A.Saboonchi, 3D-Numerical Gas Turbine Combustor, Esteghlal, 22 (2003) 137–148.
[3] P.-B.H. Kim KH, Potential of regenerative gas-turbine systems with high fogging compression, Appl Energy, 84 (2007) 16-28.
[4] G.M. Sheikhbeigi B, Thermodynamic and environmental consideration of advanced gas turbine cycles with reheat and recuperator, Int J Environ Sci Technol, 4 (2007) 253-262.
[5] D.F. De Paepe W, Bram S, De Ruyck J Steam injection experiments in a microturbine - A thermodynamic performance analysis, Appl Energy, 97 (2012) 569–576.
[6] D.-D.M. Farzaneh-Gord M, Arabkoohsar, Ahmad Khoshnevis AB, Akeififar H, Improving Khangiran gas turbine efficiency by two standard and one novel inlet air cooling method, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 36 (2014) 571–582.
[7] M. Zaki, & Rajabi-Zargarabadi M, Numerical analysis of effects of primary aeration oN NOX production in a model gas turbine combustion chamber., Modares Mech Eng, 14 (2014) 101–108.
[8] R.M. Comodi G, Caresana F, Pelagalli L Enhancing micro gas turbine performance in hot climates through inlet air cooling vapour compression technique, Appl Energy, 147 (2015) 40-48.
[9] S.S. Athari H, Rosen MA, et al xergoeconomic study of gas turbine steam injection and combined power cycles using fog inlet cooling and biomass fuel, Renew Energy, 96 (2016) 715–726.
[10] M.A. Pourmohamad, Ashjari, M. A., & Khosroshahi ARR, Recuperator Energy and Exergy Analysis in the Application of Microturbine in Cogeneration of Heat and Power Systems, J Tabriz Univ Mech Eng, 46 (2016) 55-66.
[11] E.M. El-shazly AA, Sorour MM, El-maghlany WM, Gas turbine performance enhancement via utilizing different integrated turbine inlet cooling techniques, Alexandria Eng J, 55 (2016) 1903-1914.
[12] S. Mithilesh Kumar Sahur, Comparative Exergoeconomic Analysis of Basic and Reheat Gas Turbine with Air Film Blade Cooling., Energy, 132 160-170.
[13] S. Mithilesh Kumar, Thermoeconomic Investigation of Power Utilities: Intercooled Recuperated Gas Turbine Cycle Featuring Cooled Turbine Blades, Proceedings of the ICE - Energy, 138 (2017).
[14] K.-n.P. Amiri-rad E, Thermo-environmental and economic analyses of an integrated heat recovery steam-injected gas turbine, Energy, 141 (2017) 1940-1954.
[15] A.M. Sanaye S, Amani P, 4E modeling and multi-criteria optimization of CCHPW gas turbine plant with inlet air cooling and steam injection, Sustain Energy Technol Assessments, 29 (2018) 70-81.
[16] P. D, Energy optimization analysis of a thermochemical exhaust gas recuperation system of a gas turbine unit., Energy Convers Manag, 171 (2018) 917–924.
[17] R.A. Barakat S, Hamed AM, Augmentation of gas turbine performance using integrated EAHE and Fogging Inlet Air Cooling System, Energy, 189 (2019) 116-133.
[18] M.A.H. Rashidi, Performance enhancement of gas turbine units by retrofitting with inlet air cooling technologies ( IACTs ): an hour ‑ by ‑ hour simulation study, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 7 (2020).
[19] P. BS, Turbulence Flows, Cambridge University Press, 2007.
[20] F.F. Magnussen, Hjertager BH On mathematical models of turbulent combustion with special emphasis on soot formation and combustion, Symposium (International) on Combustion, 16 (1977) 719-729.
[21] J. Warnatz, Mass, U., & Dibble RW, Combustion, Springer, 2006.
[22] R.K. Hanson, & Salimian S Survey of Rate Constants in H/N/O Systems, Combustion Chemistry (1984) 420-361.
[23] ANSYS in: Ansys Fluent 16 User’s Guide, 2013.
[24] C.B. RES, FUNDAMENTALS OF THERMODYNAMICS, 7 ed., John Wiley & Sons, University of Michigan, 2009.
[25] A. Bejan, Tstsaroincs, G., & Moran M, Thermal design and optimization, Wiley, New York, 1996.
[26] Performance test of Kave combined cycle PP (GT V94.2), in.
[27] I.U. Block Novelo DA, Prakash V, Szymański A, Experimental investigation of gas turbine compressor water injection for NOx emission reductions, Energy, 176 (2019) 235–248. | ||
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