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Empirical Correlations for Predicting Key Performance Parameters Due to Inlet Fogging

[+] Author Affiliations
Motoaki Utamura

Tokyo Institute of Technology, Tokyo, Japan

Paper No. GT2005-68964, pp. 201-208; 8 pages
  • ASME Turbo Expo 2005: Power for Land, Sea, and Air
  • Volume 4: Turbo Expo 2005
  • Reno, Nevada, USA, June 6–9, 2005
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4727-6 | eISBN: 0-7918-3754-8
  • Copyright © 2005 by ASME


Empirical correlations to predict (1) drain mass flow rate, (2) temperature depression of intake air and (3) power increase to a given ambient and operating condition are derived. The cooling efficiency and drain ratio are expressed using separation of variables, i.e. relative spray amount, ambient wet bulb depression and fogger configuration (droplet spectrum, geometry of fog rack etc.). The correlation for power increase obtained as function of net specific spray water flow can be applied to overspray mode of operation. It is confirmed that the power increase predicted matches field data within error less than 10% in the range of net specific water amount up to 0.4% overspray and ambient wet bulb depression from 3.35 to 13.8deg.

Copyright © 2005 by ASME



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