Combined Power and Heat Production With Gas Turbines and Their Control Methods PUBLIC ACCESS

[+] Author Affiliations
H. U. Frutschi

Brown, Boveri & Company, Ltd., Baden, Switzerland

Paper No. 82-GT-111, pp. V005T16A005; 8 pages
  • ASME 1982 International Gas Turbine Conference and Exhibit
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries; Technology Resources; General
  • London, England, April 18–22, 1982
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7960-3
  • Copyright © 1982 by ASME


The part load behavior of cogeneration with open cycle gas turbines and standard power control by temperature variation is poor if total fuel utilization is considered. Therefore, alternative control methods and their effect on total fuel utilization are analyzed. A simple method with a good partload behavior is proposed. The heat balances of waste heat utilization from constant speed, single shaft gas turbines are shown and discussed. Additional heat production with auxiliary burners in waste heat boilers is analyzed and a more effective solution with supplementary boilers is proposed. The combined power and heat production characteristics with compressor backflow and supplementary boilers point to the outstanding cogeneration behavior of simple open cycle gas turbines. The very good power to heat ratio and the high exhaust gas temperature of the turbine enables an efficient combination with bottoming steam cycles and compression and absorption heat pumps. This indicates the potential of fuel utilization for heating purposes.

Copyright © 1982 by ASME
Topics: Heat , Gas turbines
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