Study on CaCl<sub>2</sub>-LiCl/H<sub>2</sub>O as working pair of absorption refrigeration cycle

Yiqun LI; Chunhuan LUO; Na LI; Qingquan SU

doi:10.11949/0438-1157.20190169

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

更新时间：2026-03-25

- Study on CaCl₂-LiCl/H₂O as working pair of absorption refrigeration cycle
- CIESC Journal Vol. 70, Issue 9, Pages: 3483-3494(2019)
- 作者机构：
  
  1. 北京科技大学能源与环境工程学院,北京,100083
  2. 北京科技大学节能与环保北京高校工程研究中心,北京,100083
  3. 国网节能服务有限公司,北京,100083
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20190169
  CLC： TB61.6
- Online First：05 September 2019，
  
  Published：05 September 2019
- 稿件说明：
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Yiqun LI, Chunhuan LUO, Na LI, et al. Study on CaCl₂-LiCl/H₂O as working pair of absorption refrigeration cycle[J]. CIESC Journal, 2019, 70(9): 3483-3494. DOI: 10.11949/0438-1157.20190169.
DOI：

Yiqun LI, Chunhuan LUO, Na LI, et al. Study on CaCl₂-LiCl/H₂O as working pair of absorption refrigeration cycle[J]. CIESC Journal, 2019, 70(9): 3483-3494. DOI: 10.11949/0438-1157.20190169. DOI：

摘要

利用低品位的太阳能热、地热或者工业领域低温余热废热进行吸收式制冷是实现节能减排的一个有效途径。对具有良好制冷吸收特性的工质对CaCl2-LiCl/H2O进行了实验研究，通过测定不同质量比的CaCl2-LiCl/H2O溶液的饱和蒸气压，得出了CaCl2与LiCl的质量比为2∶1的工质对即CaCl2-LiCl(2∶1)/H2O的制冷吸收特性最佳。CaCl2-LiCl(2∶1)/H2O与常规的工质对LiBr/H2O相比，在大幅降低工质对成本的同时，在同一制冷工况下所需驱动热源温度即发生温度降低了5.8℃，而制冷COP提高0.041，?效率提高0.052。还系统测定了CaCl2-LiCl(2∶1)/H2O的结晶温度、密度、黏度、比热容、比焓以及腐蚀性。结果表明，相较于其他几种以CaCl2为主要成分的工质对，CaCl2-LiCl(2∶1)/H2O具有较低的黏性，且对碳钢和紫铜的腐蚀性也较小，可满足实际工程应用的要求。

Abstract

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.

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

DOI：10.11949/0438-1157.20190169

摘要

Abstract

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Keywords

references

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