Study On Technical Adaptability Of Heat Pump Heating In Severe Cold Area

The heat pump technology with low-grade energy as heat source has been developed rapidly with the support of our country.In severe cold areas,sewage source heat pump technology,water source heat pump technology and ground source heat pump technology have been put into production and use successively,but their actual operating effect and performance have been ignored.It is very important to monitor the performance of heat pump system and study its adaptability.In this paper,three heat pump demonstration projects in Changchun,a representative city in severe cold area,are studied for real-time monitoring.Finally,the sewage source heat pump demonstration project,the ground source heat pump demonstration project each selected a monitoring data accurate case study and analysis,the measured data including outdoor air temperature,low-grade heat source temperature,The flow rate of heat source,the temperature and flow rate of water body as medium,and the power consumption of the system,etc.The results are as follows: 1.The energy efficiency analysis of the system,the environmental benefit analysis of the system,the energy saving rate of the system,and the economic analysis of the system.The results show that the COP and energy saving rate of the water source heat pump demonstration project are better than that of the ground source and sewage water source heat pump demonstration project in the heating season of 168 days,but the heating area of the water source heat pump is smaller and the environmental benefit is not high.On the contrary,the environmental benefit of sewage source heat pump with heating area 50000m2 is remarkable,and the energy saving and emission reduction is very considerable.In terms of economy,although the ratio of energy efficiency and energy efficiency of the water source heat pump system is higher than that of the sewage source heat pump system,the heating cost of the water source heat pump system is slightly higher than that of the sewage sourceheat pump system.In the long run,in terms of economy alone,The adaptability is not as good as the sewage source heat pump system.The results show that the water source heat pump system,the sewage source heat pump system and the ground source heat pump system can reduce the coal combustion,greatly improve the energy utilization efficiency,and the economic benefits are remarkable.In environmental protection,reduce the emission of harmful gases and dust and other pollutants,prevent the occurrence of haze weather,reduce air pollution.If put into use in a large area,it will make a great contribution to the conservation of resources and the protection of the environment.It is a green heating technology in severe cold areas,which is suitable for popularization and use in severe cold areas.