Coupling of lithium bromide absorption cycle inside and outside thermal physical parameters and refrigeration unit characteristics

WANG Gang; XIE Guozhen; WANG Liangliang

doi:10.3969/j.issn.0438-1157.2012.z2.001

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Coupling of lithium bromide absorption cycle inside and outside thermal physical parameters and refrigeration unit characteristics

更新时间：2025-12-10

- Coupling of lithium bromide absorption cycle inside and outside thermal physical parameters and refrigeration unit characteristics
- CIESC Journal Issue S2, Pages: 1-7(2012)
- 作者机构：
  
  北京建筑工程学院,北京,100044
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.z2.001
  CLC： U831
- Online First：28 December 2012，
  
  Published：28 December 2012
- 稿件说明：
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WANG Gang, XIE Guozhen, WANG Liangliang. Coupling of lithium bromide absorption cycle inside and outside thermal physical parameters and refrigeration unit characteristics[J]. CIESC Journal, 2012, (S2): 1-7.
DOI：

WANG Gang, XIE Guozhen, WANG Liangliang. Coupling of lithium bromide absorption cycle inside and outside thermal physical parameters and refrigeration unit characteristics[J]. CIESC Journal, 2012, (S2): 1-7. DOI： 10.3969/j.issn.0438-1157.2012.z2.001.

摘要

溴化锂吸收式制冷技术

以其无污染、低消耗、运行平稳、用能模式多等优点在节能和环保领域越来越受到人们的重视。但相对于压缩式制冷

其效率较低的缺点限制了溴化锂吸收式制冷技术的广泛应用。基于溴化锂水溶液气液特性中汽液相平衡和溶液混合与分离的原理

通过调节机组循环过程中内部和外部的参数

实验分析对制冷机组制冷特性的耦合影响。实验结果表明:蒸发温度、充注浓度和吸收压力的提高均能提高制冷量和COP值

且吸收压力的提高效果最显著

其增幅范围最高可以超过100%

而冷却水温度的提高降低了制冷量COP值。因此

适当的耦合调节机组循环的热物理参数可以明显提高制冷性能。

Abstract

LiBr absorption refrigeration units are paid more attention in the areas of energy saving and environmental protection because of its zero pollution

low energy consumption

stable operation and multi-function energy modes

etc.But LiBr refrigeration technology application is limited by its low refrigeration efficiency.The cooling property of LiBr refrigeration unit is analyzed by experiments

which is based on the balance of liquid phase and vapor phase in the liquor mixed by LiBr and H2O as well as the parameters of the refrigeration unit are modulated in the refrigeration circle.The experiments prove that evaporation temperature

the concentration of the LiBr liquor and the absorption pressure could improve the cooling capacity and the COP of the refrigeration which are impacted mostly by the absorption pressure and the absorption pressure could improves the COP by 100%

on the contrary

the upper temperature of the cooling water of the LiBr refrigeration unit

the lower cooling capacity and COP.Therefore

the proper setup of thermal properties in the refrigeration circle could improve the refrigeration character.

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