吸收式制冷机的新型节能循环设计研究  

The study of new-style energy-saving circulation of absorption refrigeration system

作　　者：胡慧莉[1] 石程名[1] 岑瑞津[1] 徐灿君[1] 

机构地区：[1]重庆大学

出　　处：《制冷与空调》2007年第1期46-49,共4页Refrigeration and Air-Conditioning

摘　　要：针对双效溴化锂吸收式制冷机串联系统高压发生器排烟温度偏高,存在一定的余热资源浪费这一实际问题,采用并联增加一个低压发生器的方法,对原有系统进行改进,形成的一个新型循环系统。对该新型系统的工作原理及循环流程进行了介绍;就第二低压发生器排烟温度分别为160℃,140℃,120℃和不增设第二低压发生器这四种情况对机组进行设计研究,得出相应排烟温度下机组的制冷量、热力系数和各换热设备的换热面积及外形尺寸,并绘制出排烟温度与制冷量、热力系数及机组总换热面积之间的关系曲线,研究结果对于溴化锂吸收式制冷机的设计有一定的参考价值。According to existing condition that the exhaust gas vented by high-pressure generator of traditional lithium bromide absorption refrigeration tandem system has a high temperature and some waste heat is wasted, shows a new-style circulation system by adding a parallel low-pressure generator to the traditional system. Presents the working principle and circulating process of the new-style system and investigates the refrigeration system in four conditions： the exhaust gas temperature of the second low-pressure generator is 160℃, 140℃, 120 ℃ respectively and traditional system that is without adding the second low-pressure generator. The refrigerate quantity, coefficient of performance, the sizes and heat-transfer area of each heat transfer equipment at respective temperature are calculated. The relationship curves between exhaust gas temperature and refrigerate quantity, coefficient of performance and total heat-transfer area are depicted respectively. The results provide references for design of lithium bromide absorption refrigeration system.

关 键 词：溴化锂 吸收式制冷 余热利用 

分 类 号：TB651[一般工业技术—制冷工程]