Application Research Of Air Source Heat Pump Heating System

In recent years,China has been vigorously advocating the policy of "replacing coal with clean energy".Under such a policy background,how to carry out energy-saving technology transformation of air source heat pump has become a key issue.Such energy-saving measures are particularly important in northern China.But for now in the cold area due to its geographical location factor,the influence of atmospheric pressure is low,the air density is small,so using air source heat pump will be seriously affected by the surrounding environment,so this article in studies on cold area as the background,select one of the buildings in the area for a specific object,for the building of the air source heat pump heating system,analyses the operation state of this system,and the energy saving reconstruction measures.In this paper,firstly,the meteorological characteristics of the cold area are analyzed,and the calculation formula of the air physical parameters is given.According to the relevant structure of the air source heat pump,the influence of the air physical parameters on the heat exchange performance of the air source heat pump is discussed.At the same time,the frosting and dewing of air source heat pump in high cold area are analyzed.Finally,a specific building is selected to test the heating situation of air source heat pump.The influence of outdoor air temperature,water temperature and other parameters on the heating capacity and performance of air source heat pump is discussed.The feasibility of the application of air source heat pump in high cold area is obtained.Considering the influence of altitude in cold area,the heating correction coefficient of air source heat pump is set in the range of 0.80 ～ 0.84,and the actual heating capacity is calculated.The calculation results are compared with the heating situation in typical plain area,and the impact of altitude on its operation is analyzed.In the process of this paper,De ST software is also used to analyze the change of heat load during the heating period,and the energy consumption of several different forms of auxiliary heating is discussed.The results show that air source heat pump + solar energy can be selected for heating in cold area,which not only ensures the minimum energy consumption,but also has high environmental protection benefits.