Full Content is available to subscribers

Subscribe/Learn More  >

Application of Evaporative Coolers for Gas Turbine Power Plants

[+] Author Affiliations
J. Douglas McNeilly

Enron Engineering & Construction Company, Houston, TX

Paper No. 2000-GT-0303, pp. V003T03A005; 9 pages
  • ASME Turbo Expo 2000: Power for Land, Sea, and Air
  • Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration
  • Munich, Germany, May 8–11, 2000
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7856-9
  • Copyright © 2000 by ASME


The functioning of evaporative coolers is based on the thermodynamic process called adiabatic saturation. It involves spraying a mist or fog of water into the air-stream entering a gas turbine; thereby saturating the air with water vapor before it enters the compressor. The evaporation of these water droplets takes energy out of the air thus reducing the inlet temperature to approximately the ambient wet bulb temperature. Gas turbines generally loose power when the inlet air temperature increases. Because of the temperature reduction caused by the saturation process, the use of evaporative coolers can increase power output of gas turbine power plants. The proper application of these devices requires the correct understanding of a) the basis of the site capacity requirement, b) the functioning of evaporative coolers, c) the use of statistical weather data, and d) site weather variations on both a daily and long term basis. It is frequently thought that evaporative coolers are not useful unless the site has near desert weather conditions. This is far from the truth. Depending on the contractual requirements to provide capacity, evaporative coolers can be justified for relatively humid sites as well as for the drier locations. Average or high temperatures in combination with an average or high relative humidity are frequently used in evaluating the application of evaporative coolers, even though they may lead to a very misleading combination of weather parameters. The value of evaporative coolers is discussed as well as a method for correctly evaluating the use of evaporative coolers with examples at four locations around the world.

Copyright © 2000 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In