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ISSN Online: 2377-424X

ISBN Print: 0-89116-130-9

International Heat Transfer Conference 6
August, 7-11, 1978, Toronto, Canada

HEAT AND MASS TRANSFER IN WETTED-SURFACE COOLING TOWERS

Get access (open in a dialog) DOI: 10.1615/IHTC6.2080
pages 97-102

Résumé

In a wetted-surface cooling tower, the process fluid temperature is reduced within tubes that are cooled by the recirculated water flowing over the outside of the tubes; the water partly evaporates into the atmosphere.
This paper presents a model of the heat and mass transfer in wetted-surface cooling towers for use in transient analyses performed with a digital computer.
The air and the recirculated water are assumed to flow in counter current. The process fluid is assumed to flow in counter current to the direction of the recirculated water flow.
The basic heat transfer model is an extension of the general methodology used for the simulation of a wet-cooling tower in which the heat gain from the tubes is also considered in the recirculated water heat balance. The overall performance of the wetted-surface cooling tower is evaluated. The transient behavior is simulated as a succession of quasisteady state calculations. This model has been used for the optimization of ultimate heat sinks for nuclear power plants which experience very large peak-to-average heat load ratios.