Dynamic Response of Bayonet-Type Heat Exchangers : Part 2, Response to Flow Rate Changes

Abstract

Transfer functions for bayonet-type heat exchangers are obtained in a simplified form available for computer programming. In the transfer functions, the liquid temperature responses are related to changes in flow rates of both tube- and shell-side fluids. Both frequency and step responses are calculated from the transfer functions, and the effects of flow directions on the dynamic behavior are examined. Experiments of frequency response are carried out, and the data are shown to be in good agreement with the theoretical results.