太阳能吸收压缩制冷与真空膜除湿耦合系统性能优化  

Performance Optimization of a System Integrating Solar Absorption Compression Refrigeration and Vacuum Membrane-based Dehumidification

作　　者：袁伦睿 淳良 刘东[1] 廖子成 Yuan Lunrui;Chun Liang;Liu Dong;Liao Zicheng(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang,621010)

机构地区：[1]西南科技大学土木工程与建筑学院,绵阳621010

出　　处：《制冷与空调（四川）》2024年第3期305-312,共8页Refrigeration and Air Conditioning

摘　　要：对于太阳能吸收式制冷系统,很难产生较低温的冷冻水用于除湿和冷却,并且面临间歇性的问题。提出了一种新型的温湿度独立控制系统(SACV),该系统集成了太阳能吸收式制冷(SSAR)子系统、蒸汽压缩制冷(VCR)子系统和真空膜除湿(VMD)子系统。VMD子系统和VCR子系统分别解决了除湿困难和全天候制冷问题。建立并验证了热力学数学模型,分析了集热器面积和热水流量对集热器出口热水温度的影响,以及对集热器、SSAR子系统和SACV系统性能的影响,并对SSAR子系统和SACV系统进行了性能优化。结果表明,集热器出口热水温度的增加,使得SSAR子系统存在最佳性能;通过变化热水流量来改变集热器出口热水温度,使得SACV系统存在最佳性能。集热器面积增加73.7%,SSAR子系统性能到达最佳,提升了0.24%,制冷量增长69.64%,同时SACV系统性能提升4.71%,耗功量减少36.18%,但系统成本增加,因此,需要综合考虑系统性能和经济效益。For solar absorption cooling systems,it is difficult to generate lower chilled water for dehumidifying and cooling,as well as facing intermittency problems.In this work,the novel SACV system for indoor temperature and humidity control is proposed,which integrates the SSAR subsystem,the VCR subsystem,and the VMD subsystem.The VMD subsystem and the VCR subsystem solve the dehumidification difficulty and all-weather cooling problems,respectively.A thermodynamic model of the SACV system is established and validated.The effect of collector area and hot water flowrate on the collector outlet hot water temperature is analyzed,as is the effect on the performance of the collector,the SSAR subsystem,and the SACV system.In addition,the performance of the SSAR subsystem and the SACV system has been optimized.The results showed that the increase in the collector outlet hot water temperature resulted in the optimal performance of the SSAR subsystem.The SACV system operates at optimum performance by varying the collector outlet hot water temperature by varying the hot water flowrate.The collector area increased by 73.7%,the SSAR subsystem reached optimum performance with a 0.24%improvement and a 69.64%increase in cooling capacity,while the SACV system performance increased by 4.71%and power consumption decreased by 36.18%.However,the cost of the system has increased,so it is necessary to consider the performance of system and economic benefits.

关 键 词：太阳能 吸收式制冷 膜除湿 集热器出口热水温度 优化 

分 类 号：TK51[动力工程及工程热物理—热能工程]