Predicting the Performance of Heat Exchangers

Predicting the Performance of Heat Exchangers

This article discusses a method based on heat-transfer effectiveness and number of heat-transfer units for predicting responses to changes in conditions.

Although heat exchangers usually are selected for unique sets of conditions, sometimes it is of interest to know how they will respond to changes in inlet temperature. For example, it might be necessary to predict the change in cold-side outlet temperature resulting from a change in inlet boiler-water temperature or steam pressure. Because when one terminal temperature is changed, the others become unknowns, it is impractical to predict performance by means of the standard heat-transfer

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