Analysis on heating performance of direct and indirect sewage source heat pump system

作者：Qian Jian Feng^*; Zhang Li Jun; Zhang Ji Li; Sun De Xing

来源：Journal of Hunan University(Natural Sciences), 2009, 36(SUPPL. 2): 94-98.

• Coefficient of Performance
• Engineering thermodynamics
• Evaluating indicators
• Heating performance
• Indirect form
• Indirect systems
• Operating performance
• Performance coefficients
• Sewage sources
• Supply water temperature
• Temperature differences

The coefficient of performance is one important evaluating indicator in the urban sewage heat pump system. Based on the engineering thermodynamics principle, the heating operating performance of direct and indirect systems was analyzed and compared. The results indicate that the actual COP of direct sewage source heat pump system is higher approximately 0.3 than that of indirect system, and the sewage temperature and the user supply water temperature have great influence on the system performance, while the temperature differences of sewage, intermediary water, the evaporator or the condenser has little influence.

• 出版日期2009
• 单位大连大学