摘要
以大型自配胶球装置溴化锂吸收式热泵余热供热系统为研究对象,基于近三个采暖季运行数据,选取各采暖季中热网循环水及余热循环水流量接近设计值的8个工况,建立超定函数模型,并通过MATLAB采用最小二乘拟合进行理论计算,结果表明,热网水进水温度每降低1℃,热泵供热量提高1.37%,余热水进水温度每升高1℃,热泵供热量提高7.93%,驱动蒸汽压力每降低0.01MPa,热泵供热量降低3.99%,回收余热量降低10.33%。该定量拟合研究结果对火电厂大型吸收式热泵余热供热系统设计及优化运行具有重要的指导意义。
An application study was performed for an absorption heat pump system with self-equipped rubber ball device,which can recover waste heat from open circulating water in a 300MW thermal power plant.The eight working conditions,in which the flow rates of heat-supply water and circulating water were close to the design values,were selected to make overdetermined equations.Using least squares fitting through MATLAB,the results showed that the heat pump heating load can be increased by 1.37%,as the inlet temperature of heat-supply water decreases by 1℃;the load increases by 7.93%when the inlet temperature of circulating water increases by 1℃.The heat pump heating load reduces by 3.99%and the recovery of waste heat by 10.33%,as the driven steam pressure decreases by 0.01MPa.
作者
周崇波
鲍官军
高峰
叶智
杨庆华
Zhou Chongbo;Bao Guanjun;Gao Feng;Ye Zhi;Yang Qinghua(Zhejiang University of technology,Hangzhou,310006;Hua Dian Electric Power Research Institute,Hangzhou,310030)
出处
《制冷与空调（四川）》
2019年第4期351-354,359,共5页
Refrigeration and Air Conditioning
关键词
余热利用
吸收式热泵
胶球清洗
理论拟合
超定方程组
waste heat utilizing
absorption heat pump
rubber ball cleaning
simulation calculation
overdetermined equation
