The Behavior of a Closed-Cycle Gas Turbine with Time Dependent Operating Conditions

[+] Author and Article Information
K. Bammert

Institute for Turbomachinery, and Gasdynamics, University of Hanover, Hanover, Germany

H. Poesentrup

Maschinenfabrik Augsburg-Nuernberg AG, New Technology Division, Munich, Germany

J. Eng. Power 102(3), 579-583 (Jul 01, 1980) (5 pages) doi:10.1115/1.3230305 History: Received April 02, 1979; Online September 28, 2009


The closed-cycle gas turbine can be applied in thermal power stations using fossil, nuclear or solar energy. Here the behavior of the closed-cycle gas turbine plant under time dependent operating conditions is particularly important. A theoretical model was developed which unlike previously applied methods also considers the transient processes in the heat exchanging units, the heat transfer between the working medium and the internally insulated hot-gas pipes, and the condition of the blading. For examination of the model, measurements were taken on a closed-cycle air turbine. The results of the calculation made for comparison with the test results show the reliability of the calculation model. There is conformity of the measured speeds of the turbo group and of the pressures, temperatures and mass flows of the cycle with the theoretical values until a new steady-state condition is reached.

Copyright © 1980 by ASME
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