回收循环水余热的热泵供热系统热力性能分析张学镭.pdf

DOI:10.13334/j.0258-8013.pcsee.2013.08.006 33 8 Vol.33 No.8 Mar.15, 2013 2013 3 15 Proceedings of the CSEE ©2013 Chin.Soc.for Elec.Eng. 1 0258-8013 (2013) 08-0001-08 TK 264 A 470 20  ( 071003) Thermodynamic Analysis of Heat Pump Heating Supply Systems With Circulating Water Heat Recovery ZHANG Xuelei, CHEN Haiping (School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, Hebei Province, China) ABSTRACT: Heat recovery from circulating water based on absorption heat pump can achieve the energy cascade 1.706 utilization. Take a certain 300MW regulated extraction steam 11.17 4.63MW turbine as an example, this paper studied the feasibility of heat pump heating supply system (HPHSS) with circulating water heat recovery. The thermodynamic model, which considered the influence of heat recovery on condenser vacuum, was proposed to simulate the HPHSS design and off-design performance from the perspective of the overall system. The results indicate that at design condition, the heat pump coefficient of performance (COP) is 1.706, and HPHSS increases exergy efficient by 11.17 percentage points and