膜科学与技术

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Analysis of the rectification process in ammonia-water absorption systems with the membrance structured packing

Authors： KONG Ding-feng, LIU Jian-hua, WANG Jin,ZHANG Liang,CHEN Xiao-zhuan

Units： School of Energy and Power Engineering, University of Shanghai for Science and Technology

KeyWords： absorption chiller; ammonia-water; rectification; the membrance structured packing; mass transfer

ClassificationCode：TB 651

year,volume(issue):pagination： 2011,31(4):105-109

Abstract：

The ammonia-water absorption chillers are thermally driven devices producing a cooling effect. The ammonia-water mixture is environmentally friendly, which is the only working pair currently used for refrigeration purposes in absorption systems. One of the key properties of the mixture to take into account is that the vapour pressure of water is not negligible compared to the vapour pressure of ammonia in the generation process. The water carried over from the generator reaches the evaporator where it tends to accumulate. The significance increases as the evaporation temperature decreases. The intimate contact between the vapour and liquid is established by means of plates or by using different types of packing. In order to improve the design of ammonia, the membrance structured packing is provided to improve the performance and efficiency of distillation process.

Funds：

上海市研究生创新基金项目(JWCXSL0901) 国家863计划资助项目(2007AA05Z211)；上海市重点学科建设项目(S30503)

AuthorIntro：

孔丁峰(1983-)，女，山西省阳泉市人，博士生，主要研究方向为氨水吸收式制冷。电话021-55270981，邮箱kongdingfeng2002@163.com。

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