溴化锂溶液吸收制冷传热传质实验研究  

Experimental Study on the Heat and Mass Transfer Process of Absorption Refrigeration of LiBr Solution

作　　者：张峰榛[1] 王海[1] 刘兴勇[1] 周小兵[1] 

机构地区：[1]四川理工学院材料与化学工程学院,四川自贡643000

出　　处：《四川理工学院学报（自然科学版）》2014年第5期1-3,共3页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

基　　金：四川理工学院人才引进项目(2012RC07);四川理工学院教学改革项目(JG-1309)

摘　　要：以质量浓度为50%~57%,温度为28℃~37℃的溴化锂溶液为＂吸收剂＂,研究溴化锂溶液吸收制冷的传热传质过程。研究结果表明：增大溴化锂溶液浓度及降低溴化锂溶液温度,可提高传质推动力,进而强化制冷过程,但不影响过程阻力,获得的传质系数在10-6~10-7kg·m-2·s-1·Pa-1数量级范围。With the LiBr solution whose mass concentration ranges from 50% to 57% and temperature between 28 ℃and 37 ℃ as absorbent,the heat and mass transfer process of absorption refrigeration of LiBr solution is studied.The results show that increasing the concentration of LiBr or decreasing the solution temperature can benefit the refrigeration by rising the mass transfer driving force without changing the process resistance.In this study,the mass transfer coefficient obtained ranges from 10-6kg·m-2·s-1·Pa-1to 10-7kg·m-2·s-1·Pa-1.

关 键 词：溴化锂 吸收制冷 传热传质 传质系数 

分 类 号：TQ025.2[化学工程]