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RESEARCH PAPERS

Heat and Mass Transfer of Spray Canals

[+] Author and Article Information
R. W. Porter, K. H. Chen

Illinois Institute of Technology, Chicago, Ill.

J. Heat Transfer 96(3), 286-291 (Aug 01, 1974) (6 pages) doi:10.1115/1.3450193 History: Received December 12, 1973; Online August 11, 2010

Abstract

A numerical analysis is presented for the heat-exchanger performance of open, direct-contact evaporative spray cooling of large electric power plants. Floating spray modules are placed essentially in series in this large-scale application. The module “unit performance” is formulated in terms of Number of Transfer Units (NTU) as suggested by elementary drop dynamical theory. The overall canal performance is analyzed by a numerical procedure of marching along from pass to pass of spray modules. Hydrodynamic mixing within the canal and air-vapor circulation interference above the canal are incorporated as suggested by theoretical considerations and field experiments. The analysis was applied to a number of field tests of several spray canals and the apparent values of NTU were correlated with wind speed.

Copyright © 1974 by ASME
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