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Evaporative Cooling of Gas Turbine Engines

[+] Author Affiliations
Mustapha Chaker, Cyrus B. Meher-Homji

Bechtel Corporation, Houston, TX

Paper No. GT2012-68057, pp. 813-825; 13 pages
doi:10.1115/GT2012-68057
From:
  • ASME Turbo Expo 2012: Turbine Technical Conference and Exposition
  • Volume 3: Cycle Innovations; Education; Electric Power; Fans and Blowers; Industrial and Cogeneration
  • Copenhagen, Denmark, June 11–15, 2012
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4469-4
  • Copyright © 2012 by ASME

abstract

There are numerous gas turbine applications in power generation and mechanical drive service where power drop during the periods of high ambient temperature has a very detrimental effect on the production of power or process throughput. Several geographical locations experience very high temperatures with low coincident relative humidities. In such cases media evaporative cooling can be effectively applied as a low cost power augmentation technique. Several misconceptions exist regarding their applicability of evaporative cooling the most prevalent being that they can only be applied in extremely dry regions. This paper provides a detailed treatment of media evaporative cooling, discussing aspects that would be of value to an end user including selection of climatic design points, constructional features of evaporative coolers, thermodynamic aspects of its effect on gas turbines and approaches to improve reliability. It is hoped that this paper will be of value to plant designers, engineering companies and operating companies that are considering the use of media evaporative cooling.

Copyright © 2012 by ASME

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