Research Article
Aug 1970
Model of Natural Draft Cooling Tower Performance
Publication: Journal of the Sanitary Engineering Division
Volume 96, Issue 4
Abstract
A method is developed for analyzing the performance of counterflow and crossflow natural draft cooling towers that does not assume saturated air at the top of the packing. Types of cooling towers and the principles of operation are considered. Simplified differential equations for the heat and mass transfer relations and the methods of integrating them for both counterflow and crossflow towers are given. A large number of integration steps is shown to be unnecessary. Equations for estimating the pressure losses in the tower are also given. Simplified flow charts using these integration schemes show how the computer program is used to evaluate tower performance. The computed performance of towers of various heights operating in moist and in dry conditions is shown. The effect of inlet water temperature is shown to be significant. Finally, the computed performance of a given tower with fixed inlet water temperature is shown as a function of relative humidity and dry bulb air temperature.
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Published In
Journal of the Sanitary Engineering Division
Volume 96 • Issue 4 • August 1970
Pages: 927 - 943
Copyright
© 1970 American Society of Civil Engineers.
History
Published in print: Aug 1970
Published online: Feb 12, 2021
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Authors
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Lawrence D. Winiarski
Mech. Engr., Nat. Thermal Pollution Res. Program, FWQA, Pacific Northwest Water Lab., Corvallis, Oregon.
Bruce A. Tichenor, AM.ASCE
Chief, Hydrographic Branch, Nat. Thermal Pollution Res. Program, FWQA, Pacific Northwest Water Lab., Corvallis, Oregon.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.