Thermodynamic analysis of designed and fabricated shell- and tube-type heat exchanger by DSTHE software: Kern method

Abstract

ABSTRACTIn this research work, shell- and tube-type heat exchanger has been designed by Kern method. To eliminate design problems, computer software (DSTHE software) has been developed. All design parameters have been calculated by this method with the help of DSTHE software such as number of tubes, shell diameter, pipe pitch and pitch ratio. And then velocity of the tube side fluid, convective heat transfer coefficients for tube and shell side fluids and overall heat transfer coefficient have been calculated. By developed DSTHE software, tube side and shell side fluids pressure drops, entropy generation and entransy dissipation have also been found. Shell- and tube-type heat exchanger has been fabricated with calculated parameters. At various operating conditions, a number of experiments have been performed. For each condition, entropy generation analysis, entransy dissipation analysis and entransy-based thermal resistance analysis have been done. Maximum value of effectiveness, minimum values of entropy generation, entransy dissipation and entransy-based thermal resistance have been found and that actual operating conditions have been identified.