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Performance of Shell and Tube Heat Exchanger under Varied Operating Conditions

N Prabhu Kishore, N Alekhya, J Ugandhar

A heat exchanger is a device that is used to transfer thermal energy (enthalpy) between two or more fluids, at different temperatures. The problem involved in this is that performance of the heat exchanger changes with the change in the constructional parameters. The design of a shell-and-tube heat exchanger usually involves a trial and error procedure with combination of the design variables in order to calculate the heat transfer coefficient. The trial and error procedure is taken to check if there is any possibility of increasing the heat transfer coefficient. Since several discrete combinations of the design configurations are possible, the designer needs an efficient strategy to quickly locate the design configuration having the minimum heat exchanger cost. In this paper the tube metallurgy and baffle spacing are being changed to obtain the heat transfer coefficient. The results obtained from this experiment are compared to find the effectiveness.