PERFORMANCE ANALYSIS OF COMPOSITE SORBENTSIN THERMAL ENERGY STORAGE SYSTEM
Composite adsorbents, prepared by impregnating hygroscopic salt into silica gel pores are considered as promising storage materials in space heating for their high specific storage density and low regenerating temperature. In this paper, a numerical model of the adsorber heat exchanger was developed. Four kinds of composite adsorbents were tested under different conditions. The experiments were conducted to investigate the effect of their nature, the regenerating temperature, the air flow rate and number of transfer unit on the thermal storage performances. The results reveal that thermal storage performances increases significantly with CaCl2 concentration ranged from10％ to 40％. COP declines with the regenerating temperature and air flow rate, ranged from 80℃ to 90℃ and 4 m3/min to 6 m3/min respectively, while NTU is another case. The optimization of thermal performance of TES can be achieved by compromising between the above factors.
composite adsorbent thermal storage performance
Dongsheng ZHU Xuebo LI Huijun WU Nan WANG
Key Laboratory of Enhanced Heat Transfer & Energy Conservation of Ministry of Education,Research Institute of Chemical Engineering,South China University of Technology, Guangzhou, 510640, China
国际会议
海南三亚
英文
2007-01-10（万方平台首次上网日期，不代表论文的发表时间）