IJSER Home >> Journal >> IJSER
International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 3    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 3,March 2012
Parametric Analysis of Cooled Gas Turbine Cycle with Evaporative Inlet Air Cooling
Full Text(PDF, )  PP.217-224  
Author(s)
Alok Kumar Mohapatra, Sanjay, Laljee Prasad
KEYWORDS
Air-film blade cooling,Air-humidifier, Evaporative cooling, Gas turbine, Inlet-air cooling, Parametric analysis
ABSTRACT
The article investigates the effect of compressor pressure ratio, turbine inlet temperature and ambient temperature on the performance parameters of an air-cooled gas turbine cycle with evaporative cooling of inlet air. Air film cooling has been adopted as the cooling technique for gas turbine blades. The mass of coolant required for turbine blade cooling is calculated for a selected range of ambient conditions and found to vary with temperature drop achieved in the evaporator. The effect of ambient temperature on plant efficiency and plant specific work is computed at different TIT and rp,c and it was found that the rate of increase in these performance parameters are more pronounced at higher TIT and rp,c. The results indicate that a maximum temperature drop of 21 oC is achieved in the evaporator. The inlet cooling is found to increase the efficiency by 4.1% and specific work by 9.44%. The optimum plant performance is obtained at a TIT of 1500K and rp,c of 20 for all values of ambient temperature 
References
[1] I.G. Wright, T.B. Gibbons, ―Recent developments in gas turbine materials and technology and their implications for syngas firing‖ :International Journal of Hydrogen Energy 32 , (2007) 3610 – 3621.

[2] M. De Lucia , C. Lanfranchi, and V. Boggio,‖ Benefits of compressor inlet air cooling for gas turbine cogeneration plants‖ : In Proceedings of the International Gas Turbine and Aero engine Congress and Exposition, Houston, Texas, 5–8 June 1995.

[3] R. Hosseini, A. Beshkani, M. Soltani, ―Performance improvement of gas turbines of Fars (Iran) combined cycle power plant by intake air cooling using a media evaporative cooler ‖ : Energy Conversion and Management 48 (2007) 1055–1064

[4] Amir Abbas Zadpoor and Ali Asadi Nikooyan, ―Development of an Improved Desiccant-Based Evaporative Cooling System for Gas Turbines ‖ : J. Eng. Gas Turbines Power131, 034506 (2009)

[5] Yousef S. H. Najjar, ―Enhancement Of Performance Of Gas Turbine Engines By Inlet Air Cooling And Cogeneration System‖ : Thermal Engineering, 1996, Vol 16. No. 2. pp. 163-173.

[6] A.M. Bassily, ―Performance improvements of the intercooled reheat regenerative gas turbine cycles using indirect evaporative cooling of the inlet air and evaporative cooling of the compressor discharge ‖ : Proceedings of the Institution of Mechanical Engineers Part A Journal of Power And Energy (2001) Vol. 215, , pp: 545-557

[7] F.J. Wang, J.S. Chiou, ―Integration of steam injection and inlet air cooling for a gas turbine generation system‖ :Energy Conversion and Management 45 (2004) 15–26.

[8] S. Hamlin, R. Hunt, S.A. Tassou , ―Enhancing the performance of evaporative spray cooling in air cycle refrigeration and air conditioning technology‖ :Applied Thermal Engineering 18 (1998) 1139-1148

[9] A.M. Bassily, ―Effects of evaporative inlet and aftercooling on the recuperated gas cycle‖: Applied Thermal Engineering, 21(2001) 1875-1890H. Goto, Y. Hasegawa, and M. Tanaka, “Efficient Scheduling Focusing on the Duality of MPL Representation,” Proc. IEEE Symp. Computational Intelligence in Scheduling (SCIS ’07), pp. 57-64, Apr. 2007, doi:10.1109/SCIS.2007.367670.(Conference proceedings)

[10] E. Kakaras, A. Doukelis, S. Karellas, ―Compressor intake-air cooling in gas turbine plants‖ : Energy 29 (2004) 2347–

[11] M.M. Alhazmy , Y.S.H. Najjar, ―Augmentation of gas turbine performance using air coolers‖ : Applied Thermal Engineering 24 (2004) 415–429.

[12] J.F. Louis, K. Hiraoka, and M.A. El-Masri, A comparative study of influence of different means of turbine cooling on gas turbine performance, ASME Paper no. 83-GT-180.

[13] Wu Chaun Shao and J.F. Louis, A comparative study of the influence of different means of cooling on the performance of combined (Gas and Steam Turbines) cycle. Trans. of ASME Journal of Engineering for Gas Turbines and Power; 106(1984): pp 750-755.

[14] M.A. El-Masri, GASCAN- An interactive code for thermal analysis of gas turbine systems, Trans. of ASME, Journal of Engineering for Gas Turbines and Power,; 110(1988):pp 201-209

[15] M.A. El-Masri, On thermodynamic of gas turbines cycle – Part-2 – A model for expansion in cooled turbines‖, Trans. of ASME, Journal of Engineering for Gas Turbines and Power, 108(1986), pp:151-159

[16] M.S. Briesh., RL Bannister, IS Diakunchak, and DJ Huber., A combined cycle designed to achieve greater than 60 percent efficiency. ASME Journal of Engineering For Gas Turbine And Power, 117(1995): pp. 734 -741.

[17] O. Bolland and J.F. Stadaas, Comparative Evaluation of combined cycles and gas turbine systems with injections, steam injection and recuperation, ASME Journal of Engg. For Gas Turbine and Power, 117(1995):pp. 138- 145.

[18] O. Bolland, A comparative evaluation of advanced combined cycle alternatives., ASME Journal of Engg. For Gas Turbine and Power, 113(1991):pp. 190-197.

[19] Chiesa and Macchi, A thermodynamic analysis of different options to break 60 % electrical efficiency in combined cycle power plants, Proceedings of the ASME Turbo-Expo 2002, June 3-6 2002, Amsterdam, ASME paper no. GT2002-30663.

[20] P.J. Dechamps, Advanced combined cycle alternatives with latest gas turbines. ASME Journal of Engg. For Gas Turbine and Power, 120(1998): 350-357.

[21] Sanjay, Onkar Singh, B.N.Prasad, Energy and Exergy Analysis of Steam Cooled Reheat Gas-Steam Combined Cycle, Applied Thermal Engineering 27 (2007) 2779–2790.

[22] Sanjay, Onkar Singh, B.N Prasad, ―Influence of Different Means of Turbine Blade Cooling on the Thermodynamic Performance of Combined Cycle‖ Applied Thermal Engineering 28 (2008) 2315–2326.

[23] Sanjay, Onkar Singh, B.N. Prasad, ―Comparative Performance Analysis of Cogeneration Gas TurbineCycle for Different Blade Cooling Means‖ International Journal of Thermal Sciences, Volume 48, Issue 7, July 2009, 1432- 1440.

[24] Sanjay, Onkar Singh, B.N. Prasad, ―Comparative evaluation of gas turbine power plant performance for different blade cooling means‖ Proc. IMechE Vol. 223 part A: J. Power and Energy, pp. 71-82

[25] Sanjay, Investigation of effect of variation of cycle parameters on thermodynamic performance of gas/ steam combined cycle, Energy, 36 (2011) pp. 157-167.

[26] Y.S Touloukian, and Makita Tadash, Thermo-physical Properties of Matter, Vol. 6, The TPRC Data Series, IFI/PLENUNM, New York, Washington, 1970.

[27] M.Moran, , and H.Shapiro, , ―Fundamentals of Engineering Thermodynamics‖:,3rd edition, 1995 (John Wiley, New York).

[28] Gas Turbine World, Pequot Publishing Inc. vol. 32(1).

Untitled Page