Part-Load Behavior of a Solar-Heated and Fossil-Fueled Gas Turbine Power Plant

[+] Author and Article Information
K. Bammert, H. Lange

Institute for Turbomachinery, University of Hannover, Hannover, Federal Republic of Germany

J. Eng. Gas Turbines Power 109(1), 64-70 (Jan 01, 1987) (7 pages) doi:10.1115/1.3240007 History: Received March 07, 1986; Online October 15, 2009


Solar energy can be converted effectively into electrical or mechanical energy. The radiant heat of the sun is collected by a parabolic dish, concentrated intensely, and reflected into a cavity receiver. Air flowing through tube panels in front of the receiver inner walls absorbs the radiant energy. Downstream of the receiver is a fossil-fired combustion chamber (hybrid construction). The fuel energy is converted at a higher utilization than in a straight fossil-fueled power plant. The overall efficiency of the hybrid plant rises with increasing turbine inlet temperature. The power delivered by the turbine serves to drive the compressor and the generator. A description of the thermodynamic design of the cycle is followed by statements on the performance characteristics of the individual components and by a description of the steady-state part-load behavior of the plant considering specific conditions such as variations in solar and fossil fuel-generated heat and fluctuating load on the power transmission grid.

Copyright © 1987 by ASME
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