The performance of [Emim]Br/H2O as a working pair in the absorption refrigeration system

Yicang Guo; Yan Ding; Jinlong Li; Patrice Paricaud

doi:10.1016/j.nxener.2023.100038

The performance of [Emim]Br/H₂O as a working pair in the absorption refrigeration system

Yicang Guo
, Yan Ding
, Jinlong Li
, Patrice Paricaud

Unité Chimie et Procédés
Changzhou University

Research output: Contribution to journal › Article › peer-review

Abstract

The energy efficiency of the single-effect absorption refrigeration systems (ARS) using ionic liquid (IL) [Emim]Br as an absorbent and water as a refrigerant is evaluated in this study. The thermodynamic properties of the mixture, such as vapor pressures and excess enthalpies, are calculated using the non-random two-liquid (NRTL) activity coefficient model. The coefficient of performance (COP) is estimated with fixed temperatures for the evaporator, absorber, condenser, and generator, set at 10, 30, 40, and 100 °C, respectively. It is found that the COP of the single-effect ARS using [Emim]Br-H₂O as the working pair is about 0.8, which is slightly lower than that obtained with LiBr-H₂O (0.83), but much higher than that of H₂O-NH₃ (0.65) systems. The effect of generator temperature on COP has the same trend as that of other IL working pairs. The influence of each component temperature on the system's performance is investigated, and it is found that the single-effect ARS performs very well under different conditions with [Emim]Br - H₂O as the working pair.

Original language	English
Article number	100038
Journal	Next Energy
Volume	2
DOIs	https://doi.org/10.1016/j.nxener.2023.100038
Publication status	Published - 1 Jan 2024
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Absorption refrigeration
COP
ECOP
IL-HO working pair
Thermodynamic properties

Access to Document

10.1016/j.nxener.2023.100038

Cite this

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title = "The performance of [Emim]Br/H2O as a working pair in the absorption refrigeration system",

abstract = "The energy efficiency of the single-effect absorption refrigeration systems (ARS) using ionic liquid (IL) [Emim]Br as an absorbent and water as a refrigerant is evaluated in this study. The thermodynamic properties of the mixture, such as vapor pressures and excess enthalpies, are calculated using the non-random two-liquid (NRTL) activity coefficient model. The coefficient of performance (COP) is estimated with fixed temperatures for the evaporator, absorber, condenser, and generator, set at 10, 30, 40, and 100 °C, respectively. It is found that the COP of the single-effect ARS using [Emim]Br-H2O as the working pair is about 0.8, which is slightly lower than that obtained with LiBr-H2O (0.83), but much higher than that of H2O-NH3 (0.65) systems. The effect of generator temperature on COP has the same trend as that of other IL working pairs. The influence of each component temperature on the system's performance is investigated, and it is found that the single-effect ARS performs very well under different conditions with [Emim]Br - H2O as the working pair.",

keywords = "Absorption refrigeration, COP, ECOP, IL-HO working pair, Thermodynamic properties",

author = "Yicang Guo and Yan Ding and Jinlong Li and Patrice Paricaud",

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year = "2024",

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doi = "10.1016/j.nxener.2023.100038",

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AU - Guo, Yicang

AU - Ding, Yan

AU - Li, Jinlong

AU - Paricaud, Patrice

PY - 2024/1/1

Y1 - 2024/1/1

N2 - The energy efficiency of the single-effect absorption refrigeration systems (ARS) using ionic liquid (IL) [Emim]Br as an absorbent and water as a refrigerant is evaluated in this study. The thermodynamic properties of the mixture, such as vapor pressures and excess enthalpies, are calculated using the non-random two-liquid (NRTL) activity coefficient model. The coefficient of performance (COP) is estimated with fixed temperatures for the evaporator, absorber, condenser, and generator, set at 10, 30, 40, and 100 °C, respectively. It is found that the COP of the single-effect ARS using [Emim]Br-H2O as the working pair is about 0.8, which is slightly lower than that obtained with LiBr-H2O (0.83), but much higher than that of H2O-NH3 (0.65) systems. The effect of generator temperature on COP has the same trend as that of other IL working pairs. The influence of each component temperature on the system's performance is investigated, and it is found that the single-effect ARS performs very well under different conditions with [Emim]Br - H2O as the working pair.

AB - The energy efficiency of the single-effect absorption refrigeration systems (ARS) using ionic liquid (IL) [Emim]Br as an absorbent and water as a refrigerant is evaluated in this study. The thermodynamic properties of the mixture, such as vapor pressures and excess enthalpies, are calculated using the non-random two-liquid (NRTL) activity coefficient model. The coefficient of performance (COP) is estimated with fixed temperatures for the evaporator, absorber, condenser, and generator, set at 10, 30, 40, and 100 °C, respectively. It is found that the COP of the single-effect ARS using [Emim]Br-H2O as the working pair is about 0.8, which is slightly lower than that obtained with LiBr-H2O (0.83), but much higher than that of H2O-NH3 (0.65) systems. The effect of generator temperature on COP has the same trend as that of other IL working pairs. The influence of each component temperature on the system's performance is investigated, and it is found that the single-effect ARS performs very well under different conditions with [Emim]Br - H2O as the working pair.

KW - Absorption refrigeration

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KW - ECOP

KW - IL-HO working pair

KW - Thermodynamic properties

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