NDLI: Gas Turbine Power Augmentation Using Fog Inlet Air-Cooling System

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ameri, Mohammad Nabati, Hamid Keshtgar, Alireza
Copyright Year	2004
Abstract	Gas turbines are almost constant volume machines at a specific rotating speed, i.e., air intake is limited to a nearly fixed volume of air regardless of ambient air conditions. As air temperature rises, its density falls. Thus, although the volumetric flow rate remains constant, the mass flow rate is reduced as air temperature rises. Power output is also reduced as air temperature rises because power output is proportional to mass flow rate. This power output reduction is from 0.5% to 0.9% of the ISO output power for every 1°C rise in the ambient temperature. The solution of this problem is very important because the peak demand season also happens in the summer. One of the useful methods to overcome this problem is to apply the fog inlet air cooling system for the gas turbines. In this paper the Rey Power Plant site climate conditions in the summer have been studied. The design conditions regarding the dry bulb temperature and relative humidity have been selected. The different inlet air cooling systems have been studied and the Fog system has been chosen. The economical study has shown that this system is very cheap in comparison with the installation of the new gas turbines. The capital cost is estimated to be 40 $/KW. The pay back period is around 1.5 year. The testing of this system has shown that the average power capacity of the power plant is increased by 19 MW and prevented the installation of a new gas turbine.
Starting Page	73
Ending Page	78
Page Count	6
File Format	PDF
ISBN	0791841731
DOI	10.1115/ESDA2004-58101
e-ISBN	0791837416
Volume Number	Volume 1
Conference Proceedings	ASME 7th Biennial Conference on Engineering Systems Design and Analysis
Language	English
Publisher Date	2004-07-19
Publisher Place	Manchester, England
Access Restriction	Subscribed
Subject Keyword	Gas turbine Inlet air cooling Power augmentation Fog Cooling Gas turbines
Content Type	Text
Resource Type	Article

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