高温液相添加剂对纳米LiBr溶液表面张力和沸腾温度的影响  

Influence of liquid additives on surface tension and boiling temperature of nano-LiBr aqueous solution

作　　者：李云翔[1] 解国珍[1] 安龙[1] 田泽辉[1] 李小双[1] 

机构地区：[1]北京建筑大学,北京100044

出　　处：《低温工程》2014年第5期52-57,共6页Cryogenics

基　　金：国家自然科学基金项目(编号:51176007);北京供热;供燃气;通风与空调工程重点实验室资助

摘　　要：通过在纳米溴化锂(LiBr)溶液中添加表面活性剂降低溶液沸腾温度,从而有助于大幅度应用工业余热、废热等低品味热源。尽管影响沸腾温度的因素较多,但是溶液的表面张力是一个重要的因素,首先对异辛醇(C8H18O)、壬醇(C9H20O)和癸醇(C10H22O)3种高沸点液相添加剂对纳米LiBr溶液的表面张力的影响做了深入研究,并进一步研究了相对应的沸腾温度。并且通过实验发现随着烷醇中烷基数增加,表面张力更低,使得沸腾温度也进一步降低。By adding the aqueous surface active agents into a nano-lithium bromide aqueous solution,boiling temperature of the soluton decreases,which is beneficial to use industrial waste heat. Though there are many factors to influence on the boiling temperature,surface tension of the solution palys an important role. A thorough study of the effects of different additives was made on the surface tension of the nano-LiBr solution and the boiling temperature was study. It was found that with the increase in the number of alkyl alcohol,a lower surface tension,such that the boiling temperature is further reduced.

关 键 词：表面张力 沸腾温度 纳米溴化锂溶液 添加剂 表面活性剂 

分 类 号：TB66[一般工业技术—制冷工程]