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Economic Design of Hybrid Wet-Dry Cooling Systems

[+] Author Affiliations
R. W. Card

CB&I, Boston, MA

Paper No. POWER2013-98111, pp. V001T03A004; 6 pages
  • ASME 2013 Power Conference
  • Volume 1: Fuels and Combustion, Material Handling, Emissions; Steam Generators; Heat Exchangers and Cooling Systems; Turbines, Generators and Auxiliaries; Plant Operations and Maintenance
  • Boston, Massachusetts, USA, July 29–August 1, 2013
  • Conference Sponsors: Power Division
  • ISBN: 978-0-7918-5605-5
  • Copyright © 2013 by ASME


A hybrid wet-dry cooling system can be designed for a large combined-cycle power plant.

A well-designed hybrid cooling system will provide reasonable net generation year-round, while using substantially less water than a conventional wet cooling tower. The optimum design for the hybrid system depends upon climate at the site, the price of power, and the price of water. These factors vary on a seasonal basis.

Two hypothetical power plants are modeled, using state-of-the-art steam turbines and hybrid cooling systems. The plants are designed for water-constrained sites incorporating typical weather data, power prices, and water prices.

The principles for economic designs of hybrid cooling systems are demonstrated.

Copyright © 2013 by ASME



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