摘要
发电厂有大量的低温余热被浪费,而通过热泵则可以将发电厂循环水的余热回收利用,从而提高热利用效率。基于热泵技术提出了一种汽水双热源供热量可调的集中供热系统,并与常规热电厂供热系统进行对比,认为利用热泵回收发电厂余热具有节能、环保的双重效应。虽然汽水双热源供热量可调集中供热系统的初投资较高,但运行费用较低,仅需3年就可收回投资。
A great deal of low-temperature residual heat is wasted in power plant. Recycling the residual heat of circulating water by heat pump could increase the efficiency of heat utilization. The paper proposes a cen- tral heating system with steam and water heat sources and heat adjustability on the basis of heat pump tech- nology and it compares the central heating system with the conventional heating system in thermal power plants. The paper believes that residual heat recycling by heat pump can save the energy and protect the en- vironment. Though the investment in central heating system with steam and water heat sources and heat ad- justability is high, the cost for operation is lower, and the investment can be returned in three years.
出处
《浙江电力》
2013年第10期55-57,共3页
Zhejiang Electric Power
关键词
发电厂
余热
循环水
热泵
供热
节能
power plant
waste heat
circulating water
heat pump
heating
energy saving
