Evaluation of the Performance for the Sewage Heat Utilization Heat Pump Installed in Hospital in Cold District

Abstract

Sewage heat is gaining attention as an underutilized energy source, with expectations for its integration alongside the rehabilitation of aging sewer pipelines. To facilitate the broader introduction of sewage heat, it is essential to gather sewage data　from small and medium-sized sewage pipelines in local cities and evaluate the systems currently in operation. In this study, we analyzed the performance of a sewage-heat-utilization heat pump installed in a hospital located in a cold district. Our analysis is based on sewage temperature measurements and Building Energy Management System (BEMS) data. Additionally, we calculated the annual primary energy consumption using real values and compared it with that of an air-cooled system.