华南理工大学学报(自然科学版) ›› 2008, Vol. 36 ›› Issue (7): 72-76.

• 化学化工 • 上一篇    下一篇

氯化钙复合吸附剂的制冷性能

王丽 陈砺 王红林 余舜辉   

  1. 华南理工大学 广东省绿色化学产品技术重点实验室, 广东 广州 510640
  • 收稿日期:2007-07-31 修回日期:2008-01-29 出版日期:2008-07-25 发布日期:2008-07-25
  • 通信作者: 陈砺(1958-),男,教授,博士生导师,主要从事绿色化学与可再生资源研究. E-mail:celichen@scut.deu.cn
  • 作者简介:王丽(1983-),女,博士生,主要从事绿色化学与可再生资源研究.E-mail:wanglihaha@126.com

Refrigeration Characteristics of Composite Calcium Chloride Adsorbents

Wang Li  Chen Li  Wang Hong-lin  Yu Shun-hui   

  1. The Guangdong Provincial Laboratory of Green Chemical Technology, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2007-07-31 Revised:2008-01-29 Online:2008-07-25 Published:2008-07-25
  • Contact: 陈砺(1958-),男,教授,博士生导师,主要从事绿色化学与可再生资源研究. E-mail:celichen@scut.deu.cn
  • About author:王丽(1983-),女,博士生,主要从事绿色化学与可再生资源研究.E-mail:wanglihaha@126.com

摘要: 以CaCl2为吸附剂、NH3为制冷剂,将CaCl2分别与CaSO4、水泥按质量比4:1进行复配,组成吸附式制冷工质对,通过实验研究了工质对的吸附制冷性能.结果表明:温度是过程的控制因素,在110℃时,CaCl2/CaSO4复合吸附剂的单位脱胶凝剂基吸附制冷量是CaCl2的1.48倍,是CaCl2/水泥的1.96倍.文中还对吸附剂的比表面积及孔结构进行了表征,发现CaCl2/CaSO4复合吸附剂的孔结构保持较好,制冷性能得到改善.

关键词: 氯化钙, 复合吸附剂, 吸附制冷, 吸附等温线, 比表面积

Abstract:

Calcium chloride was respectively added in calcium sulphate and cement with a mass fraction of 20% to produce two new working pairs for adsorption refrigeration, with CaCl2 as the adsorbent and with NH3 as the refrigerant. Then, the refrigeration characteristics of the working pairs were experimentally investigated. The results show that temperature is the control factor of the refrigeration process, and that, at 110 ℃, the refrigeration capacity per unit adsorbent of CaCl2 /CaSO4 is 1.48 times that of CaCl2  and 1.96 times that of calcium chloride/cement. More-over, from the determination of specific surface area and pore structure of the adsorbents, it is found that the composite CaCl2 /CaSO4adsorbent maintains good pore structure and is of excellent refrigeration capacity.

Key words: calcium chloride, composite adsorbent, adsorption refrigeration, adsorption isotherm, specific surface area