Exergy Analysis of Overspray Process in Gas Turbine Systems

Energies

Kyoung Hoon Kim¹ 

[1] Department of Mechanical Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi, Gyeongbuk 730-701, Korea; E-Mail:

关键词: water injection;    droplet evaporation;    overspray;    gas turbine;    exergy;   

DOI  :  10.3390/en5082745

来源: mdpi

【 摘 要 】

Gas turbine power can be augmented by overspray process which consists of inlet fogging and wet compression. In this study exergy analysis of the overspray process in gas turbine system is carried out with a non-equilibrium analytical modeling based on droplet evaporation and the second law of thermodynamics. This work focuses on the effects of system parameters such as pressure ratio, water injection ratio, and initial droplet diameter on exergetical performances including irreversibility and exergy efficiency of the process. The process performances are also estimated under the condition of saturated water injection ratio above which complete evaporation of injected water droplets within a compressor is not possible. The results show that the irreversibility increases but the saturated irreversibility decreases with increasing initial droplet diameter for a specified pressure ratio.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.