吸收式热泵余热利用优化研究

Optimization of Waste Heat Utilization of Absorption Heat Pump

传统燃煤锅炉效率偏低,大量低品位余热无法得到利用。以某矿区余热源为研究对象,提出了多源耦合吸收式热泵余热利用系统。建立了余热回收过程的数学模型,采用MATLAB软件对吸收式热泵系统进行计算,分析了系统性能系数的影响因素。研究表明:随着热源温度和循环水出口温度增加,热泵性能系数逐渐增加,至1.6后趋于平缓;供回水温度增加,热泵性能系数下降。可为今后多源耦合吸收式热泵余热利用提供参考。

The efficiency of traditional boiler is low, where a large number of low-grade waste heats cannot be used. Taking the remaining heat source of a coal mine as the research object, a multi-source coupled absorption heat pump waste heat utilization system was proposed. The mathematical model of waste heat recovery process was established, and the absorption heat pump system was calculated by MATLAB software, the influencing factors of unit performance parameters were analyzed. The results show that the performance coefficient of the heat pump gradually increases with the heat source temperature and the outlet temperature of the circulating water. The performance of the heat pump decreases with the increase of the temperature of the water supply and return water. It can provide reference for waste heat utilization of multi-source coupling absorption heat pump in the future.