Study on Energy Saving Performance of Exhaust Heat Recovery System Installed in a Large Hospital in a Cold Region

Part 1-Study of the Effect of Installing an Exhaust Heat Recovery System and Improving the Operation of a Heat Recovery Heat Pump

Abstract

This study aimed demonstrate the energy-saving performance of an exhaust heat recovery system using a heat recovery heat pump in a large-scale hospital in a cold region, where it is difficult to construct a highly efficient heat source system. First, the effect of introducing the exhaust heat recovery system was analyzed, and the effect of the system efficiency improvement on the thermal load was inferred from the evaluation of the combined heat source facilities for air-conditioning and hot water supply. Next, the impact of optimizing operational settings on energy efficiency was evaluated. The results indicated that the energy efficiency may be improved by optimizing the control setting temperature of the exhaust heat recovery systems.