Experimental Investigation of the Effect of Evaporator and Heat Exchanger Types on Heat Pump Performance Using the Taguchi Method

In this study, a modified heat pump system has been designed for heating applications in cold climate regions, enabling the replacement of system components such as the evaporator and heat exchanger within the same system. In this modified heat pump system, which uses R407C and R417A refrigerants instead of the restricted R22 refrigerant, the optimal system conditions that provide the best performance were determined using the Taguchi experimental method, prepared using five different parameters. As a result of the experiments, the optimum operating conditions of the system were determined from the analysis of variance table obtained by considering the COP and exergetic efficiency values. As a result, it was determined that the COP and exergetic efficiency values were higher in the case of using the 8 mm lamella spacing evaporator type and horizontal heat exchanger type.