An Experimenatl Study on Heat Transfer Behaviors of A Welded - Aluminum Minichannel Heat Exchanger

This paper presented an investigation for heat transfer behaviors of a welded-Aluminum minichannel heat exchanger (MNHE) using experimental method. In this study, the results show that the welding Aluminum method for MNHE is less efficiency than the bonding PMMA method at high mass flow rate of water. For water having the inlet temperature of 62?C and mass flow rate of 4.1g/s, the heat transfer rate of the welded- Aluminum MNHE is 118W and the heat transfer rate of the bonded-PMMA MNHE is 132W. It is an important key to select a method for design a minichannel heat exchanger