Study on CaCl2-LiCl/H2O as working pair of absorption refrigeration cycle

被引：0
|
作者：
Li Y. [1 ]
Luo C. [1 ,2 ]
Li N. [1 ,3 ]
Su Q. [1 ,2 ]
机构：
[1] School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing
[2] Beijing Engineering Research Center for Energy Saving and Environmental Protection, University of Science and Technology Beijing, Beijing
[3] State Grid Energy Conservation Service Co., Ltd., Beijing
来源：
Huagong Xuebao/CIESC Journal | 2019年 / 70卷 / 09期
关键词：
Absorption characteristic of refrigeration; Absorption refrigeration; Corrosion; Crystallization; Viscosity; Working pair;
D O I：
10.11949/0438-1157.20190169
中图分类号：
学科分类号：
摘要：
Absorption refrigeration using low-grade solar heat, geothermal heat or industrial waste heat as driving heat source is an effective way to achieve energy saving and emission reduction. A new working pair of CaCl2-LiCl/H2O, which has an excellent refrigeration absorption characteristic, was studied by measuring its crystallization temperature and vapor pressure with different mass ratios of CaCl2:LiCl. The results showed that CaCl2-LiCl(2:1)/H2O with a mass ratio of 2:1 was the most suitable working pair for an absorption refrigeration system. Compared with LiBr/H2O, under the same refrigeration conditions, the required driving heat source temperature, that is, the required generation temperature for CaCl2-LiCl(2:1)/H2O was 5.8℃ lower, COP and exergy efficiency for CaCl2-LiCl(2:1)/H2O were 0.041 and 0.052 higher, respectively. Furthermore, the cost of working pair was greatly reduced. In addition, the crystallization temperature, saturated vapor pressure, density, viscosity, specific heat capacity, specific enthalpy, and corrosivity of CaCl2-LiCl(2:1)/H2O were measured systematically. Compared with other working pairs using CaCl2 as the main component, CaCl2-LiCl(2:1)/H2O had a relatively low viscosity and low corrosion rates for carbon steel and copper, so it could meet the requirements of practical engineering application. © All Right Reserved.
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页码：3483 / 3494
页数：11
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