ANALYSIS AND PRACTICAL STUDY ON PLATE TYPE HEAT TRANSFER SYSTEM (HEAT EXCHANGER)

Abstract

Inside the thermal discipline, high viability heat exchangers of the order of 0.96 or higher are widely used for conserving the refrigeration effect produced. So, there will be no liquid yield if the effectiveness drops below that of the design value. Due to high effectiveness, low weight & compactness, the small heat exchangers have their vast applications in the air-conditioning system, oil industries, food industries & in the process industries. The plate type heat transfer system is a sort of compact heat exchanger which is produced by brazing a heap of alternate plates (parting sheets) & fluted fins together. The transfer of heat occurs through the streams by the fins. Usually, aluminum metal is utilized for manufacturing due to their high thermal conductivity & low cost. In the plate fin heat exchanger, the stress drop is also marked along with the effectiveness. The increment in pressure gradient can be surpassed by reducing the passage length so that an adequate pressure drop can be accomplished. There are extensive research is going on to make out the heat transfer phenomena & also to determine the dimensionless heat change coefficients that is the Colburn factor (j) and the friction factor (f). This dissertation on the offset strip plate fin heat exchanger equals the effectiveness, overall thermal conductance & the pressure decrease received from the experimental data with some similarities on plate fin heat exchanger i.e., Joshi-Webb correspondence, Maiti-Sarangi correspondence, Manglik-Bergles correspondence and also with the numerically obtained data obtained by using CFD.