水—溴化锂—硝酸锂与水—溴化锂吸收式制冷循环的比较  

The contrast between the water-lithium bromide-lithium nitrate and the water-lithium bromide absorption refrigeration cycle

作　　者：魏林生[1] 张雪东[1] 胡亚才[1] 俞自涛[1] 王建平[1] 洪荣华[1] 

机构地区：[1]浙江大学机械与能源工程学院,浙江杭州310027

出　　处：《能源工程》2004年第5期15-18,共4页Energy Engineering

摘　　要：比较了水—溴化锂—硝酸锂三元工质与传统的水—溴化锂工质的单、双效吸收式制冷循环,分析了发生温度、冷凝温度和蒸发温度对系统性能的影响;同时也分析了直燃型双效制冷系统。结果表明:采用新工质后,系统的热力系数COP有了明显的提高,其它表征系统热力性能的经济指标也均有不同程度的改善,尤其在直燃型双效冷热水机组中有明显的优势,热力系数COP提高约30%,溶液循环倍率f降低12%。因此,该新工质与传统的水—溴化锂工质相比,具有较好的热力性能。The water-lithium bromide-lithium nitrate absorption refrigeration cycle is compared with the traditional water-lithium bromide system.The effect of generating temperature, condensing temperature and evaporating temperature on system performance is analyzed. Moreover, the double-effect absorption refrigeration system is also investigated.The results show that the COP of the water-lithium bromide-lithium nitrate absorption refrigeration system is enhanced and the other thermodynamic parameters are also improved. Especially for the double-effect absorption system,the COP has been increased by 30% and the f has been reduced by 12%.Thus, the water-lithium bromide-lithium nitrate absorption system has better performance than the system of water-lithium bromide.

关 键 词：吸收式制冷循环 溴化锂 工质 COP 蒸发温度 冷凝温度 制冷系统 热力系数 冷热水机组 热力性能 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程] TB616[一般工业技术—制冷工程]