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RESEARCH PAPERS

On the Minimum Size of Large Dry Cooling Towers With Combined Mechanical and Natural Draft

[+] Author and Article Information
F. K. Moore

Department of Mechanical Engineering, Cornell University, Ithaca, N. Y.

J. Heat Transfer 95(3), 383-389 (Aug 01, 1973) (7 pages) doi:10.1115/1.3450068 History: Received October 23, 1972; Online August 11, 2010

Abstract

The gasdynamic performance equation for large-scale dry cooling towers is derived relating size, shape, fan power, and drag and heat-transfer performance of heat exchangers. Induced-, forced-, or natural-draft towers are special cases. The general result consists of a zero-order scaling formula involving a size function having a minimum for a particular combination of temperatures, together with a set of correction terms of first order in temperature rise. Thus systems that are nearly equivalent gasdynamically can be compared. Technical requirements for small tower size or fan power are expressed in terms of heat-exchanger parameters.

Copyright © 1973 by ASME
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