Performance analysis of ionic liquids for simultaneous cooling and heating absorption system

Sejun Park; Hyung Won Choi; Jae Won Lee; Hyun Uk Cho; Nam Soo Lee; Yong Tae Kang

doi:10.1016/j.energy.2023.127005

Performance analysis of ionic liquids for simultaneous cooling and heating absorption system

Sejun Park, Hyung Won Choi, Jae Won Lee, Hyun Uk Cho, Nam Soo Lee, Yong Tae Kang

School of Mechanical Engineering

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

Abstract

A new working fluid for simultaneous cooling and heating absorption system, which is a combination of type 1 and type 2 absorption systems, was analyzed by simulation analysis. An imidazolium-based ionic liquid (IL) was used as an absorbent in the new working fluid and H₂O and R32 were used as refrigerants. The states of the solution mixed with the refrigerant and absorbent were predicted using a non-random two-liquid (NRTL) model. The ILs with H₂O refrigerant were 1,3-dimethylimidazolium dimethylphosphate ([DMIM][DMP]), 1-ethyl-3-methylimidazolium dimethylphosphate ([EMIM][DMP]), and 1-ethyl-3-methyl tetrafluoroborate ([EMIM][BF₄]), and the IL with R32 refrigerant was 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HMIM][Tf₂N]). Changes in the cooling, heating, and total coefficient of performances (COPs) according to the generation temperature and generator and condenser split ratios were analyzed. It was concluded that H₂O/[DMIM][DMP], H₂O/[EMIM][DMP], and H₂O/[EMIM][BF₄] were suitable for simultaneous cooling and heating absorption systems with reasonable cooling, heating and total COPs. However, R32/[HMIM][Tf₂N] had advantages for subzero cooling temperature and compactness of system size, while its COPs were lower than those of H₂O/[DMIM][DMP], H₂O/[EMIM][DMP], and H₂O/[EMIM][BF₄]. The total COP of H₂O/[DMIM][DMP] was 0.98, indicating the highest performance. H₂O/[EMIM][DMP] and H₂O/[EMIM][BF₄] exhibited total COPs of 0.96 and 0.97, whereas R32/[HMIM][Tf₂N] showed a value of 0.55, under certain simulation conditions.

Original language	English
Article number	127005
Journal	Energy
Volume	271
DOIs	https://doi.org/10.1016/j.energy.2023.127005
Publication status	Published - 2023 May 15

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea( NRF ) grant funded by the Korea government ( MSIT ) (No. 2020R1A5A1018153 ).

Publisher Copyright:
© 2023 Elsevier Ltd

Keywords

Absorption system
Coefficient of performance
HO
Ionic liquid
R32
Simultaneous cooling and Heating

ASJC Scopus subject areas

Civil and Structural Engineering
Modelling and Simulation
Renewable Energy, Sustainability and the Environment
Building and Construction
Fuel Technology
Energy Engineering and Power Technology
Pollution
Mechanical Engineering
Energy(all)
Management, Monitoring, Policy and Law
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

UN SDGs

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

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10.1016/j.energy.2023.127005

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title = "Performance analysis of ionic liquids for simultaneous cooling and heating absorption system",

abstract = "A new working fluid for simultaneous cooling and heating absorption system, which is a combination of type 1 and type 2 absorption systems, was analyzed by simulation analysis. An imidazolium-based ionic liquid (IL) was used as an absorbent in the new working fluid and H2O and R32 were used as refrigerants. The states of the solution mixed with the refrigerant and absorbent were predicted using a non-random two-liquid (NRTL) model. The ILs with H2O refrigerant were 1,3-dimethylimidazolium dimethylphosphate ([DMIM][DMP]), 1-ethyl-3-methylimidazolium dimethylphosphate ([EMIM][DMP]), and 1-ethyl-3-methyl tetrafluoroborate ([EMIM][BF4]), and the IL with R32 refrigerant was 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HMIM][Tf2N]). Changes in the cooling, heating, and total coefficient of performances (COPs) according to the generation temperature and generator and condenser split ratios were analyzed. It was concluded that H2O/[DMIM][DMP], H2O/[EMIM][DMP], and H2O/[EMIM][BF4] were suitable for simultaneous cooling and heating absorption systems with reasonable cooling, heating and total COPs. However, R32/[HMIM][Tf2N] had advantages for subzero cooling temperature and compactness of system size, while its COPs were lower than those of H2O/[DMIM][DMP], H2O/[EMIM][DMP], and H2O/[EMIM][BF4]. The total COP of H2O/[DMIM][DMP] was 0.98, indicating the highest performance. H2O/[EMIM][DMP] and H2O/[EMIM][BF4] exhibited total COPs of 0.96 and 0.97, whereas R32/[HMIM][Tf2N] showed a value of 0.55, under certain simulation conditions.",

keywords = "Absorption system, Coefficient of performance, HO, Ionic liquid, R32, Simultaneous cooling and Heating",

author = "Sejun Park and Choi, {Hyung Won} and Lee, {Jae Won} and Cho, {Hyun Uk} and Lee, {Nam Soo} and Kang, {Yong Tae}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea( NRF ) grant funded by the Korea government ( MSIT ) (No. 2020R1A5A1018153 ). Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = may,

day = "15",

doi = "10.1016/j.energy.2023.127005",

language = "English",

volume = "271",

journal = "Energy",

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T1 - Performance analysis of ionic liquids for simultaneous cooling and heating absorption system

AU - Park, Sejun

AU - Choi, Hyung Won

AU - Lee, Jae Won

AU - Cho, Hyun Uk

AU - Lee, Nam Soo

AU - Kang, Yong Tae

N1 - Funding Information: This work was supported by the National Research Foundation of Korea( NRF ) grant funded by the Korea government ( MSIT ) (No. 2020R1A5A1018153 ). Publisher Copyright: © 2023 Elsevier Ltd

PY - 2023/5/15

Y1 - 2023/5/15

N2 - A new working fluid for simultaneous cooling and heating absorption system, which is a combination of type 1 and type 2 absorption systems, was analyzed by simulation analysis. An imidazolium-based ionic liquid (IL) was used as an absorbent in the new working fluid and H2O and R32 were used as refrigerants. The states of the solution mixed with the refrigerant and absorbent were predicted using a non-random two-liquid (NRTL) model. The ILs with H2O refrigerant were 1,3-dimethylimidazolium dimethylphosphate ([DMIM][DMP]), 1-ethyl-3-methylimidazolium dimethylphosphate ([EMIM][DMP]), and 1-ethyl-3-methyl tetrafluoroborate ([EMIM][BF4]), and the IL with R32 refrigerant was 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HMIM][Tf2N]). Changes in the cooling, heating, and total coefficient of performances (COPs) according to the generation temperature and generator and condenser split ratios were analyzed. It was concluded that H2O/[DMIM][DMP], H2O/[EMIM][DMP], and H2O/[EMIM][BF4] were suitable for simultaneous cooling and heating absorption systems with reasonable cooling, heating and total COPs. However, R32/[HMIM][Tf2N] had advantages for subzero cooling temperature and compactness of system size, while its COPs were lower than those of H2O/[DMIM][DMP], H2O/[EMIM][DMP], and H2O/[EMIM][BF4]. The total COP of H2O/[DMIM][DMP] was 0.98, indicating the highest performance. H2O/[EMIM][DMP] and H2O/[EMIM][BF4] exhibited total COPs of 0.96 and 0.97, whereas R32/[HMIM][Tf2N] showed a value of 0.55, under certain simulation conditions.

AB - A new working fluid for simultaneous cooling and heating absorption system, which is a combination of type 1 and type 2 absorption systems, was analyzed by simulation analysis. An imidazolium-based ionic liquid (IL) was used as an absorbent in the new working fluid and H2O and R32 were used as refrigerants. The states of the solution mixed with the refrigerant and absorbent were predicted using a non-random two-liquid (NRTL) model. The ILs with H2O refrigerant were 1,3-dimethylimidazolium dimethylphosphate ([DMIM][DMP]), 1-ethyl-3-methylimidazolium dimethylphosphate ([EMIM][DMP]), and 1-ethyl-3-methyl tetrafluoroborate ([EMIM][BF4]), and the IL with R32 refrigerant was 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HMIM][Tf2N]). Changes in the cooling, heating, and total coefficient of performances (COPs) according to the generation temperature and generator and condenser split ratios were analyzed. It was concluded that H2O/[DMIM][DMP], H2O/[EMIM][DMP], and H2O/[EMIM][BF4] were suitable for simultaneous cooling and heating absorption systems with reasonable cooling, heating and total COPs. However, R32/[HMIM][Tf2N] had advantages for subzero cooling temperature and compactness of system size, while its COPs were lower than those of H2O/[DMIM][DMP], H2O/[EMIM][DMP], and H2O/[EMIM][BF4]. The total COP of H2O/[DMIM][DMP] was 0.98, indicating the highest performance. H2O/[EMIM][DMP] and H2O/[EMIM][BF4] exhibited total COPs of 0.96 and 0.97, whereas R32/[HMIM][Tf2N] showed a value of 0.55, under certain simulation conditions.

KW - Absorption system

KW - Coefficient of performance

KW - HO

KW - Ionic liquid

KW - R32

KW - Simultaneous cooling and Heating

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DO - 10.1016/j.energy.2023.127005

M3 - Article

AN - SCOPUS:85149202397

SN - 0360-5442

VL - 271

JO - Energy

JF - Energy

M1 - 127005

ER -

Performance analysis of ionic liquids for simultaneous cooling and heating absorption system

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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