Abstract

A newly developed empirical model based on the effectiveness–NTU approach was developed for a dry-cooling simulation to evaluate the thermal performance of air-cooled heat exchangers. The value of this model is that air-cooled heat exchanger performance can be studied in a variety of working conditions. This information is useful in dry-cooling system evaluation. The purpose of this study was to present a calculation that would be accurate and simple to implement, and could be applied to evaluate and optimize the thermal performance for hybrid (wet/dry) cooling towers, in which dry- and wet-cooling towers are designed to work in combination. This study was only limited to a dry-cooling section. The tests showed that the predictions of the model were accurate and efficient.

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