Axial Turbine Performance Improvement Under Steam Injection<br/>

Please enable javascript in your browser.

Axial Turbine Performance Improvement Under Steam Injection

412 Viewed

Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 53369 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Ghorbanian, Kaveh
Abstract:
Steam Injection is one of the most effective methods to improve performance and emission reduction of a gas turbine engine. In this study, the effect of using steam injection on the performance of a mechanical drive gas turbine engine is simulated and power output, thermal efficiency, compressor surge margin, velocity field in axial turbine and turbine isentropic efficiency are examined. In the two-shaft configuration, turbine inlet temperature and gas generator spool speed are the two parameters limiting the output power. On the other hand, matching of compressor turbine and power turbine is an important task that affects the performance of engine under steam injection condition. Based on these parameters, three different scenarios of steam injection in the engine are shaft speed limitation, turbine inlet temperature limitation and power turbine matching to satisfy the constrains are compared. The result indicated that there is a new optimum matching point between the power turbine and the gas generator which maximizes the power output and efficiency of the steam injected gas turbine engine
Keywords:
Gas Turbines ; Steam Turbines ; Power Turbine Matching ; Axial Turbine ; Three Dimentional Flow

No TOC