Thermodynamic analysis of steam-injected advanced gas turbine cycles

2017 International Conference on Material Engineering and Advanced Manufacturing Technology

Pandey, Devendra^1 ; Bade, Mukund H.^1

Mechanical Engineering Department, Sardar Vallabhbhai National Institute of Technology, Surat Gujarat, 395007, India^1

关键词: Gas turbine cycles;    Gas turbine plants;    Maximum Efficiency;    Optimal operation;    Reduction of pollutions;    Steam-injected gas turbine;    Thermo dynamic analysis;    Thermodynamic performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/282/1/012008/pdf
DOI  :  10.1088/1757-899X/282/1/012008

来源: IOP

【 摘 要 】

This paper deals with thermodynamic analysis of steam-injected gas turbine (STIGT) cycle. To analyse the thermodynamic performance of steam-injected gas turbine (STIGT) cycles, a methodology based on pinch analysis is proposed. This graphical methodology is a systematic approach proposed for a selection of gas turbine with steam injection. The developed graphs are useful for selection of steam-injected gas turbine (STIGT) for optimal operation of it and helps designer to take appropriate decision. The selection of steam-injected gas turbine (STIGT) cycle can be done either at minimum steam ratio (ratio of mass flow rate of steam to air) with maximum efficiency or at maximum steam ratio with maximum net work conditions based on the objective of plants designer. Operating the steam injection based advanced gas turbine plant at minimum steam ratio improves efficiency, resulting in reduction of pollution caused by the emission of flue gases. On the other hand, operating plant at maximum steam ratio can result in maximum work output and hence higher available power.