RESEARCH PAPERS: Gas Turbines: Industrial and Cogeneration

Effect of Steam-Injected Gas Turbines on the Unit Sizing of a Cogeneration Plant

[+] Author and Article Information
K. Ito, R. Yokoyama

Department of Energy Systems Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Sakai, Osaka, 593 Japan

Y. Matsumoto

Technical Research Center, The Kansai Electric Power Co., Inc., 3-11-20, Nakoji, Amagasaki, Hyogo, 661 Japan

J. Eng. Gas Turbines Power 119(1), 131-136 (Jan 01, 1997) (6 pages) doi:10.1115/1.2815536 History: Received April 01, 1995; Online November 19, 2007


The effect of installing steam-injected gas turbines in a cogeneration plant is analyzed with respect to unit sizing and operational planning. An optimization method is used to determine the capacities of gas turbines and other auxiliary machinery in consideration of their operational strategies for variations of electricity and thermal energy demands. Through a numerical study on a plant for district heating and cooling, it is clarified how the installation of steam-injected gas turbines in place of simple-cycle ones can improve the economic and energy-saving properties. The influence of the capital cost of steam-injected gas turbines on the unit sizing and the above-mentioned properties is also clarified.

Copyright © 1997 by The American Society of Mechanical Engineers
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