摘要
应用吸收式热泵回收电厂循环水余热用于城市集中供热,是一项新兴的节能技术,相关的性能验收试验标准尚未制定。对热泵性能验收试验中各直接、间接测量参数及最终试验结果制热性能系数(coefficient of performance,COP)的不确定度评定方法进行了分析,给出相应的计算公式,并以某300MW供热机组循环水余热利用工程为例进行了热泵COP测试不确定度评定。不确定度计算分析结果表明:降低热网水流量、凝结水流量、热网水进出口温度等参数的测量不确定度,可提高测试结果的可用性。
The waste heat of circulating water in power plant recovered by absorption heat pump and used for urban central heating is a new energy saving technology, but the standards for its performance acceptance test have not been drafted. In the heat pump performance acceptance test, the uncertainty evaluation method of COP, the direct and indirect measuring parameters are analyzed, as well as the corresponding calculation formula is proposed. Then taking the waste heat utilization project of circulating water in a 300 MW heating unit as an example, the uncertainty assessment is carded out for the COP test of heat pump. The uncertainty calculation results show that the availability of the test results can be effectively improved by reducing the parameters＇ measurement uncertainty, such as the water flow in heating network, the condensate flow, the water temperature at inlet and outlet of heat network, and so on.
出处
《电力建设》
2013年第4期55-57,共3页
Electric Power Construction
基金
河北省电力建设调整试验所科研课题(dk2012-26)
关键词
发电厂
循环水余热
吸收式热泵
制热性能系数(COP)
不确定度
节能
power plant
waste heat of circulating water
absorption heat pump
coefficient of performance （COP）
uncertainty
energy saving
