Seasonal energy performance characteristics of novel ejector-expansion air conditioners with low-GWP refrigerants

Yongseok Jeon; Sunjae Kim; Sang Hun Lee; Hyun Joon Chung; Yongchan Kim

doi:10.1016/j.apenergy.2020.115715

Seasonal energy performance characteristics of novel ejector-expansion air conditioners with low-GWP refrigerants

Yongseok Jeon, Sunjae Kim, Sang Hun Lee, Hyun Joon Chung, Yongchan Kim

School of Mechanical Engineering

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

12 Citations (Scopus)

Abstract

The objective of this study is to investigate the seasonal performance characteristics of novel ejector-expansion air conditioners (EEACs) with low global warming potential refrigerants. A simplified simulation model for EEACs is developed and validated using measured data. Using a simulation model, the coefficient of performance, cooling seasonal performance factor, and life cycle climate performance of the EEACs employing low global warming potential refrigerants are analyzed at various operating conditions and modes. In addition, the climatic effects on the cooling seasonal performance factors and life cycle climate performances of the EEACs are evaluated at four different weather conditions. The EEAC with R290 exhibits the cooling seasonal performance factor and total CO₂ emissions that are 22% higher and 23.3% lower, respectively, than those of the baseline air conditioner with R410A. In general, R290 is the best working fluid for EEACs in terms of the seasonal performance and lifetime environmental factor.

Original language	English
Article number	115715
Journal	Applied Energy
Volume	278
DOIs	https://doi.org/10.1016/j.apenergy.2020.115715
Publication status	Published - 2020 Nov 15

Keywords

Ejector
Ejector-expansion air conditioner
Life cycle climate performance
Low-GWP refrigerant
Seasonal performance

ASJC Scopus subject areas

Building and Construction
Mechanical Engineering
Energy(all)
Management, Monitoring, Policy and Law

UN SDGs

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

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10.1016/j.apenergy.2020.115715

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title = "Seasonal energy performance characteristics of novel ejector-expansion air conditioners with low-GWP refrigerants",

abstract = "The objective of this study is to investigate the seasonal performance characteristics of novel ejector-expansion air conditioners (EEACs) with low global warming potential refrigerants. A simplified simulation model for EEACs is developed and validated using measured data. Using a simulation model, the coefficient of performance, cooling seasonal performance factor, and life cycle climate performance of the EEACs employing low global warming potential refrigerants are analyzed at various operating conditions and modes. In addition, the climatic effects on the cooling seasonal performance factors and life cycle climate performances of the EEACs are evaluated at four different weather conditions. The EEAC with R290 exhibits the cooling seasonal performance factor and total CO2 emissions that are 22% higher and 23.3% lower, respectively, than those of the baseline air conditioner with R410A. In general, R290 is the best working fluid for EEACs in terms of the seasonal performance and lifetime environmental factor.",

keywords = "Ejector, Ejector-expansion air conditioner, Life cycle climate performance, Low-GWP refrigerant, Seasonal performance",

author = "Yongseok Jeon and Sunjae Kim and Lee, {Sang Hun} and Chung, {Hyun Joon} and Yongchan Kim",

note = "Funding Information: This work was supported by the National Research Foundation ( NRF ) grant funded by the Korean Government (MSIT) (No. NRF-2019R1G1A1099288 ). Funding Information: This work was supported by the National Research Foundation (NRF) grant funded by the Korean Government (MSIT) (No. NRF-2019R1G1A1099288). Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

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doi = "10.1016/j.apenergy.2020.115715",

language = "English",

volume = "278",

journal = "Applied Energy",

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T1 - Seasonal energy performance characteristics of novel ejector-expansion air conditioners with low-GWP refrigerants

AU - Jeon, Yongseok

AU - Kim, Sunjae

AU - Lee, Sang Hun

AU - Chung, Hyun Joon

AU - Kim, Yongchan

N1 - Funding Information: This work was supported by the National Research Foundation ( NRF ) grant funded by the Korean Government (MSIT) (No. NRF-2019R1G1A1099288 ). Funding Information: This work was supported by the National Research Foundation (NRF) grant funded by the Korean Government (MSIT) (No. NRF-2019R1G1A1099288). Publisher Copyright: © 2020 Elsevier Ltd

PY - 2020/11/15

Y1 - 2020/11/15

N2 - The objective of this study is to investigate the seasonal performance characteristics of novel ejector-expansion air conditioners (EEACs) with low global warming potential refrigerants. A simplified simulation model for EEACs is developed and validated using measured data. Using a simulation model, the coefficient of performance, cooling seasonal performance factor, and life cycle climate performance of the EEACs employing low global warming potential refrigerants are analyzed at various operating conditions and modes. In addition, the climatic effects on the cooling seasonal performance factors and life cycle climate performances of the EEACs are evaluated at four different weather conditions. The EEAC with R290 exhibits the cooling seasonal performance factor and total CO2 emissions that are 22% higher and 23.3% lower, respectively, than those of the baseline air conditioner with R410A. In general, R290 is the best working fluid for EEACs in terms of the seasonal performance and lifetime environmental factor.

AB - The objective of this study is to investigate the seasonal performance characteristics of novel ejector-expansion air conditioners (EEACs) with low global warming potential refrigerants. A simplified simulation model for EEACs is developed and validated using measured data. Using a simulation model, the coefficient of performance, cooling seasonal performance factor, and life cycle climate performance of the EEACs employing low global warming potential refrigerants are analyzed at various operating conditions and modes. In addition, the climatic effects on the cooling seasonal performance factors and life cycle climate performances of the EEACs are evaluated at four different weather conditions. The EEAC with R290 exhibits the cooling seasonal performance factor and total CO2 emissions that are 22% higher and 23.3% lower, respectively, than those of the baseline air conditioner with R410A. In general, R290 is the best working fluid for EEACs in terms of the seasonal performance and lifetime environmental factor.

KW - Ejector

KW - Ejector-expansion air conditioner

KW - Life cycle climate performance

KW - Low-GWP refrigerant

KW - Seasonal performance

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M3 - Article

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SN - 0306-2619

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JO - Applied Energy

JF - Applied Energy

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ER -

Seasonal energy performance characteristics of novel ejector-expansion air conditioners with low-GWP refrigerants

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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