Performance Analysis on the Absorption Refrigeration Cycle Using R1234ze(E)/Ionic Liquids as Working Pairs

doi:10.7652/xjtuxb201905002

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Performance Analysis on the Absorption Refrigeration Cycle Using R1234ze(E)/Ionic Liquids as Working Pairs

更新时间：2025-07-09

- Performance Analysis on the Absorption Refrigeration Cycle Using R1234ze(E)/Ionic Liquids as Working Pairs
- Vol. 53, Issue 5, Pages: 9-15(2019)
- 作者机构：
  
  西安交通大学热流科学与工程教育部重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201905002
  CLC： TB651
- Online First：10 May 2019，
  
  Published：2019
- 稿件说明：
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Performance Analysis on the Absorption Refrigeration Cycle Using R1234ze(E)/Ionic Liquids as Working Pairs[J]. 2019, 53(5): 9-15.
DOI：

Performance Analysis on the Absorption Refrigeration Cycle Using R1234ze(E)/Ionic Liquids as Working Pairs[J]. 2019, 53(5): 9-15. DOI： 10.7652/xjtuxb201905002.

摘要

针对传统吸收式制冷工质对H

O/LiBr和NH

O等存在的问题

且含离子液体的工质对是一类有潜力的新型吸收式制冷工质对

选取烯烃类制冷剂R1234ze(E)与3种离子液体[Bmim

]

[PF

]

、[Hmim

]

[PF

]

和[Omim

]

[PF

]

组成的工质对在单效吸收式制冷循环中的性能展开了研究。首先

运用NRTL活度系数模型关联了3种工质对的相平衡数据

建立了相关的热力学模型; 其次

通过建立的热力学模型分析了不同发生温度、蒸发温度和冷凝温度时工质对的循环倍率、稀溶液与浓溶液的浓度差、系统性能系数以及效率等的变化规律; 最后

通过与文献中的R1234ze(E)以及其他离子液体(包括[Hmim

]

[Tf

]

、[Omim

]

[BF

]

、[Hmim

]

[BF

]

和[Emim

]

[BF

]

等)组成的工质对在吸收式制冷循环中的性能进行了对比。研究结果表明:在冷凝温度为30 ℃时

3种工质对的性能在发生温度70 ℃时达到最大值

循环的效率在65 ℃时达到最大

且工质对R1234ze(E)/[Omim

]

[PF

]

的性能系数最大

可达到0.21

其效率为0.089; R1234ze(E)/[Hmim

]

[Tf

]

系统性能最优

R1234ze(E)/[Emim

]

[BF

]

的性能最低。研究结果可为后续新型制冷工质对在吸收制冷循环中的实际应用提供一定的参考。

Abstract

Traditional refrigerant-absorbent pairs

such as H

O/LiBr or NH

O used in the absorption refrigeration system

have some drawbacks

and some of the mixtures including ionic liquids are considered as promising alternative working pairs. The performance of the single-effect absorption refrigeration system using R1234ze(E)/[Bmim

]

[PF

]

R1234ze(E)/[Hmim

]

[PF

]

or R1234ze(E)/[Omim

]

[PF

]

as the working pair was investigated in the present work. Firstly

the NRTL activity coefficient model was used to correlate the experimental vapor-liquid equilibrium data

and the thermodynamic models of the absorption cycles were also established. In addition

the circulation ratio

mass concentration difference between strong and weak solutions

coefficient of performance and exergy coefficient of the cycle were analyzed at different generation temperatures

evaporation temperatures and condensation temperatures. At last

the performances of the refrigeration system based on R1234ze(E)with other ionic liquids(including [Hmim

]

[Tf

]

[Omim

]

[BF

]

[Hmim

]

[BF

]

and [Emim

]

[BF

]

)reported in the literatures are compared with the results of this work. The results show that when the condensation temperature is 30 ℃

the maximum coefficient of performance and the maximum exergy coefficient of the cycle can be attained at the generation temperatures of 70 ℃ and 65 ℃

respectively. And at this condition

the R1234ze(E)/[Omim

]

[PF

]

pair has the highest coefficient of performance of 0.21

and the exergy coefficient is 0.089. The R1234ze(E)/[Hmim

]

[Tf

]

pair has the highest performance

but that for R1234ze(E)/[Emim

]

[BF

]

is the lowest. This study may provide useful information for the application of new working pairs to the absorption refrigeration systems.

关键词

Keywords

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