Practice of using air-source heat pumps to recover waste heat from steam turbine hall of a thermal power plant in hot summer and cold winter zone
Taking the steam turbine hall of a large clean and efficient coal-fired power plant in China as an example,the indoor heat dissipation and temperature distribution in winter are analysed,and a scheme of using air-source heat pumps to recover the air waste heat from the steam turbine hall is proposed.The COP variation of the air-source heat pumps under different environmental and water outlet temperatures is analysed,and the COP mathematical model is fitted.The results show that the average COP of the air-source heat pump units of the project during the heating period increases by about 20％,and the COP increases by nearly 32％during the coldest period,saving about 23 000 kWh of electricity annually,and the energy saving benefit is significant.
hot summer and cold winter zonesteam turbine hallwaste heatair-source heat pumpheatingenergy saving
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