摘要
为了解决传统的双床连续吸附制冷系统中因在制冷剂环路使用真空挡板阀而存在的制冷剂压降的问题,使吸附式制冷系统更适合于应用太阳能,提出了利用硅胶-水作为吸附工质对的新型太阳能制冷系统.系统热源由40 m2的热管式真空管集热器提供,制冷机为特殊设计的吸附制冷系统,在上海典型日照条件下该系统可以较为稳定地提供5～8 kW的制冷量,系统COP达0.2以上.通过对系统的动态模拟和理论分析,证实了以硅胶-水为工质对的吸附式系统更适合利用太阳能,研究结果为进一步实验和改进系统性能提供理论指导.
This paper presents the simulation of a solar-powered continuous adsorption air-conditioning system with the working pair of silica gel and water. In order to make the adsorption system more suitable to using solar energy for cooling continuously during daytime, a new adsorption system without refrigerant valves was developed in SJTU recently. By using this system, such problem as pressure drop along refrigerant circuit could be resolved. The frequent switches of refrigerant valves could also be eliminated. The daytime simulation results (from 6:00 AM to 18:00) demonstrated that by using 40 m2 solar collector area, the adsorption system could supply a fairly steady cooling output about 5-8 kW with system COP over 0.2 all the time. Based on the results, parametric study was also made to optimize the design. The simulation results and theoretical analysis could provide guidance for practical work.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2005年第5期791-795,共5页
CIESC Journal
基金
国家重点基础研究发展规划项目 (G2000026309)
国家杰出青年科学基金项目(50225621)~~
关键词
太阳能
吸附式制冷
回热
回质
Adsorption
Heat transfer
Mass transfer
Refrigerants
Silica gel
Solar energy
