JiSMART2021—038: Applicability and Energy Saving Analysis of Sewage Source Heat Pump System in Cold Region, Case Study: A Hotel in Changchun, China

Abstract

In this paper, a sewage source heat pump system in Changchun, China, which uses domestic sewage as the cold and heat source, is taken as the research object, carry on the long-term monitoring and collect the sewage-source heat pump system in the actual operation data, with the traditional central heating + water cooled chiller system for comparative analysis of energy consumption, energy saving analysis, Finally, it is concluded that the sewage source heat pump system can save 17, 629kg standard coal in the cooling season and 116, 222kg standard coal in the heating season, and the annual energy saving rate reaches 31.6%. In terms of economic benefits, compared with traditional central heating system and gas boiler system, the conclusion is the operation cost of sewage water source heat pump system in heating season saves 371,757 yuan compared with central heating system, saves -12,818 to 302,915 yuan compared with gas boiler. And saves 34,664 yuan compared with water-cooled air conditioning in cooling season. It is proved that sewage source heat pump system is suitable for promotion in cold region.