气相界面活性剂对溴化锂水溶液吸收水蒸气的影响  

EFFECTS OF SURFACTANT VAPOR ON ABSORPTION OF WATER VAPOR INTO LiBr AQUEOUS SOLUTION

作　　者：高洪涛[1] 飞原英治[2] 

机构地区：[1]大连海事大学,辽宁大连116026 [2]东京大学新领域创成科学研究科

出　　处：《工程热物理学报》2005年第3期391-393,共3页Journal of Engineering Thermophysics

基　　金：日本大金(Daikin)工业株式会社和国家自然科学基金项目资助(No.50476038)

摘　　要：目前在溴化锂吸收式制冷机/热泵中被广泛采用的界面活性剂是2-ethyl-1-hexanol(2EH)和1-octanol。传统的界面活性剂的添加方式是,将界面活性剂以液相形式投入到溴化锂溶液中。如果在三效循环中仍采用这样的方式将2EH加入到溴化锂溶液中,由于发生器的温度较高,势必有界面活性剂被蒸发而进入冷媒系统。为探讨三效循环界面活性剂的可能添加方式,同时试图研究界面活性剂以气相形式投入对溴化锂溶液吸收水蒸气的影响,本文针对几种可能有效的界面活性剂,做了界面活性剂的气相添加对吸收速度影响的测试实验。经过对2-ethyl-1-hexanol、1-heptanol和1-hexanol等添加剂的静态池实验,结果表明,气相添加的效果与液相投入没有明显的差别,同样可以大大提高溴化锂溶液吸收水蒸气的速度。2-ethyl-1-hexanol (2EH) and 1-octanol are the surfactants widely used in absorption refrigerator or heat pump using water/Lithium bromide as working fluids. Conventionally surfactant is directly added into aqueous LiBr solution by liquid phase. If 2EH is used as surfactant in triple-effect cycle, the generator temperature will be very high so that 2EH will probably be evaporated and go to the coolant loop side. To approach the method of adding surfactant in triple-effect cycle, and to know the effect of additive vapor on absorption of water vapor into LiBr aqueous solution, present study was carried out by using a stagnant absorption pool for several possible effective additives such as 2EH, 1-heptanol and 1-hexanol. Results show that adding of additive vapor also can improve the absorption of water vapor into LiBr aqueous solution, and the effect is similar to adding of additive liquid.

关 键 词：界面活性剂 吸收 溴化锂 制冷 

分 类 号：TB61[一般工业技术—制冷工程]