Energy and exergy analysis of an R410A small vapor compression system retrofitted with R290

T. K. Berkah Fajar; P. Restu Bagas; S. Ukhi; M. I. Alhamid; Arnas Lubis

doi:10.1016/j.csite.2020.100671

Energy and exergy analysis of an R410A small vapor compression system retrofitted with R290

T. K. Berkah Fajar, P. Restu Bagas, S. Ukhi, M. I. Alhamid, Arnas Lubis

Department of Mechanical Engineering

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

27 Citations (Scopus)

Abstract

This study analyzes the energy and exergy of a small vapor compression system by retrofitting R410A working fluid with R290. The study was conducted on a split air conditioner by maintaining the air temperature through the condenser at 308 K and the air temperature through the evaporator at 300 K. The full charge amount of R410A was 340 g and the produced refrigerating capacity, power compressor, and coefficient of performance (COP) were 1899 W, 333 W, and 4.6, respectively. Subsequently, by varying the retrofit charging amount of R290, the optimum charging amount was obtained in the range of 45-55% from the full charge amount of R410A according to the COP and exergy efficiency; it exhibited the highest COP of 4.9. However, the refrigerating capacity and power consumption of the compressor decreased by 31.3 and 35.7%, respectively, compared with the system's condition of full charge amount R410A. Finally, the total exergy destruction and highest exergy efficiency were sequentially determined, where R410A exhibited 549.2 W and 0.26, and R290 exhibited 338 W and 0.21, respectively.

Original language	English
Article number	100671
Journal	Case Studies in Thermal Engineering
Volume	21
DOIs	https://doi.org/10.1016/j.csite.2020.100671
Publication status	Published - Oct 2020

Keywords

Air conditioning
Energy
Exergy
R290
R410A

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title = "Energy and exergy analysis of an R410A small vapor compression system retrofitted with R290",

abstract = "This study analyzes the energy and exergy of a small vapor compression system by retrofitting R410A working fluid with R290. The study was conducted on a split air conditioner by maintaining the air temperature through the condenser at 308 K and the air temperature through the evaporator at 300 K. The full charge amount of R410A was 340 g and the produced refrigerating capacity, power compressor, and coefficient of performance (COP) were 1899 W, 333 W, and 4.6, respectively. Subsequently, by varying the retrofit charging amount of R290, the optimum charging amount was obtained in the range of 45-55% from the full charge amount of R410A according to the COP and exergy efficiency; it exhibited the highest COP of 4.9. However, the refrigerating capacity and power consumption of the compressor decreased by 31.3 and 35.7%, respectively, compared with the system's condition of full charge amount R410A. Finally, the total exergy destruction and highest exergy efficiency were sequentially determined, where R410A exhibited 549.2 W and 0.26, and R290 exhibited 338 W and 0.21, respectively. ",

keywords = "Air conditioning, Energy, Exergy, R290, R410A",

author = "{Berkah Fajar}, {T. K.} and {Restu Bagas}, P. and S. Ukhi and Alhamid, {M. I.} and Arnas Lubis",

note = "Funding Information: This research is funded by Universitas Indonesia through Q1Q2 Funding NKB-0312/UN2.R3.1/HKP.05.00/2019 managed by Directorate for Research and Public Services (DRPM) Universitas Indonesia . Publisher Copyright: {\textcopyright} 2020 The Authors.",

year = "2020",

month = oct,

doi = "10.1016/j.csite.2020.100671",

language = "English",

volume = "21",

journal = "Case Studies in Thermal Engineering",

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T1 - Energy and exergy analysis of an R410A small vapor compression system retrofitted with R290

AU - Berkah Fajar, T. K.

AU - Restu Bagas, P.

AU - Ukhi, S.

AU - Alhamid, M. I.

AU - Lubis, Arnas

N1 - Funding Information: This research is funded by Universitas Indonesia through Q1Q2 Funding NKB-0312/UN2.R3.1/HKP.05.00/2019 managed by Directorate for Research and Public Services (DRPM) Universitas Indonesia . Publisher Copyright: © 2020 The Authors.

PY - 2020/10

Y1 - 2020/10

N2 - This study analyzes the energy and exergy of a small vapor compression system by retrofitting R410A working fluid with R290. The study was conducted on a split air conditioner by maintaining the air temperature through the condenser at 308 K and the air temperature through the evaporator at 300 K. The full charge amount of R410A was 340 g and the produced refrigerating capacity, power compressor, and coefficient of performance (COP) were 1899 W, 333 W, and 4.6, respectively. Subsequently, by varying the retrofit charging amount of R290, the optimum charging amount was obtained in the range of 45-55% from the full charge amount of R410A according to the COP and exergy efficiency; it exhibited the highest COP of 4.9. However, the refrigerating capacity and power consumption of the compressor decreased by 31.3 and 35.7%, respectively, compared with the system's condition of full charge amount R410A. Finally, the total exergy destruction and highest exergy efficiency were sequentially determined, where R410A exhibited 549.2 W and 0.26, and R290 exhibited 338 W and 0.21, respectively.

AB - This study analyzes the energy and exergy of a small vapor compression system by retrofitting R410A working fluid with R290. The study was conducted on a split air conditioner by maintaining the air temperature through the condenser at 308 K and the air temperature through the evaporator at 300 K. The full charge amount of R410A was 340 g and the produced refrigerating capacity, power compressor, and coefficient of performance (COP) were 1899 W, 333 W, and 4.6, respectively. Subsequently, by varying the retrofit charging amount of R290, the optimum charging amount was obtained in the range of 45-55% from the full charge amount of R410A according to the COP and exergy efficiency; it exhibited the highest COP of 4.9. However, the refrigerating capacity and power consumption of the compressor decreased by 31.3 and 35.7%, respectively, compared with the system's condition of full charge amount R410A. Finally, the total exergy destruction and highest exergy efficiency were sequentially determined, where R410A exhibited 549.2 W and 0.26, and R290 exhibited 338 W and 0.21, respectively.

KW - Air conditioning

KW - Energy

KW - Exergy

KW - R290

KW - R410A

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U2 - 10.1016/j.csite.2020.100671

DO - 10.1016/j.csite.2020.100671

M3 - Article

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SN - 2214-157X

VL - 21

JO - Case Studies in Thermal Engineering

JF - Case Studies in Thermal Engineering

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ER -

Energy and exergy analysis of an R410A small vapor compression system retrofitted with R290

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