溴化锂对NH<sub>3</sub>-H<sub>2</sub>O-LiBr三元溶液特性作用机理的初步研究

何树青; 吴铁晖; 吴裕远; 王晶; 吴红林

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溴化锂对NH₃-H₂O-LiBr三元溶液特性作用机理的初步研究

专题研究 | 更新时间：2025-12-08

- 溴化锂对NH₃-H₂O-LiBr三元溶液特性作用机理的初步研究
- Mechanism of Action of LiBr on Characteristics of NH₃-H₂O-LiBr Ternary Solution
- 西安交通大学学报 2008年42卷第7期页码：848-851
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
  
  : 2007-09-16. 作者简介: 何树青(1982-),男,硕士生;吴裕远(联系人),男,教授,博士生导师. 基金项目: 国家自然科学基金资助项目(50776064)
- DOI：
  中图分类号： TB651
- 网络首发：2008-07-10，
  
  纸质出版：2008
- 稿件说明：
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何树青, 吴铁晖, 吴裕远, 等. 溴化锂对NH₃-H₂O-LiBr三元溶液特性作用机理的初步研究[J]. 西安交通大学学报, 2008,42(7):848-851.

何树青, 吴铁晖, 吴裕远, et al. Mechanism of Action of LiBr on Characteristics of NH₃-H₂O-LiBr Ternary Solution[J]. 2008, 42(7): 848-851.
何树青, 吴铁晖, 吴裕远, 等. 溴化锂对NH₃-H₂O-LiBr三元溶液特性作用机理的初步研究[J]. 西安交通大学学报, 2008,42(7):848-851. DOI：

何树青, 吴铁晖, 吴裕远, et al. Mechanism of Action of LiBr on Characteristics of NH₃-H₂O-LiBr Ternary Solution[J]. 2008, 42(7): 848-851. DOI：

摘要

针对目前吸收式制冷领域中研究的NH

-H

O-LiBr三元溶液混合工质

采用溶剂化作用模型和电解质NRTL方程

研究了溴化锂(LiBr)对溶液组成的影响. 结果表明:随着LiBr初始摩尔分数的升高

水的溶剂化系数m先升高

后略有降低

氨的溶济化系数n始终呈下降趋势

并且在350 K、LiBr的初始摩尔分数大于0.03时m>n

离子溶剂化作用形成的离子簇包含的水分子多于氨分子; 溶剂化作用后水的含量高于作用前的

但前后差值随LiBr初始摩尔分数升高而减小; 随着温度的升高

m降低

n升高

离子吸引水分子的能力减弱而吸引氨分子的能力升高; 完全电离的溶剂化模型只在LiBr的初始摩尔分数小于0.1时得到较好的结果

在LiBr的初始摩尔分数大于0.1时与部分电离模型产生较大的误差.

Abstract

A solvation model and electrolyte NRTL equation were used to study the mechanism of the action of LiBr on the thermal equilibrium characteristics of NH

-H

O-LiB in an absorption refrigeration system. The results show that the solvation number m

water molecules arrested in ionic clusters

increases with the increases of the original mole concentration of LiBr and then decreases slightly when the mole concentration is higher than 0.13. The solvation number n

ammonia molecules arrested in ionic clusters

decreases in the whole range. Moreover

m>n when the mole concentration is greater than 0.03. In addition

the mole concentration of water after salv

ation is also higher than that before solvation

but their value difference decreases significantly with the increase of the original mole concentration of LiBr. Large difference between the results obtained by the completely ionization solvation model and the partial ionization one occurs when the original concentration of LiBr surpassed 0.1.

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Keywords

references

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PETERS R, GREB O, KORINTH C, et al. Vapor-liquid equilibria in the system NH3+H2O+LiBr. 1.measurements at T=303-423 K and p=0.1-0.5 MPa[J]. J Chem Eng Data, 1995, 40(4): 769-774.

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陈燕, 吴裕远, 孙韶华. NH3-H2O-LiBr三元溶液体系气液相平衡特性实验研究[J]. 上海交通大学学报, 2005,39(8):1218-1221.

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溴化锂对NH3-H2O-LiBr三元溶液特性作用机理的初步研究

Mechanism of Action of LiBr on Characteristics of NH3-H2O-LiBr Ternary Solution

DOI：

摘要

Abstract

关键词

Keywords

references

溴化锂对NH₃-H₂O-LiBr三元溶液特性作用机理的初步研究

Mechanism of Action of LiBr on Characteristics of NH₃-H₂O-LiBr Ternary Solution