摘要
以烟气中余热和水的回收为目标,构建第二类开式吸收式热泵。采用流程模拟的方法对系统的性能和可用能利用情况进行分析。结果显示典型工况下系统性能系数为0.64,不低于同类闭式循环吸收式热泵系统。参数分析表明烟气温度湿度、冷却水温度流量及工质流量的增大均会使系统性能系数(COP)上升。系统的总火用效率为27.11%,火用损主要集中在吸收器、再生器和冷凝器;冷凝器可用能输出为零,仅用于回收冷凝水;系统火用效率的提高需通过减小吸收器及再生器的火用损来实现。
An open cycle obsorption heat transformer （OAHT） was bulit in this paper in order to recycle the heat and water from the flue gas. The coefficient of performance and the exergy efficiency were analyzed with the method of process simulation. Result showed the COP is 0.64, which is not less than the closed absorption system. The temperature and humidity of flue gas, the tempreature and flowrate of cooling water and the working fluid flow rate increasing would lead to COP increase. The exergy efficiency of the system was 27.11%. The absorber, the gener- ator and the condenser produce most exergy loss. The exergy efficiency of condensation was 0, which was using to recovery condensation water. The exergy efficiency would be strengthen by reducing the exergy loss of absorber and generator.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2013年第3期427-432,共6页
Acta Energiae Solaris Sinica
关键词
开式循环
第二类吸收式热泵
性能
炯效率
open cycle
absorption heat transformer
system performance
exergy efficiency
