Numerical Study on the Performance of Vapor Compression Liquid Chillers using R32 and R410A.

Jeong Hoon Lee, Hoon Kang, Jongho Jung, Junyub Lim, Wonhee Cho, Yong Chan Kim

Research output: Contribution to journalConference article

Abstract

A numerical model is developed to predict the performance of vapor compression liquid chillers using R410A and R32. A new convergence method is employed to find the optimum compressor RPM at a given heat load. The superheat and subcooling are maintained constant for both R32 and R410A systems. The performance of the vapor compression cycle are analytically investigated according to the condenser inlet air temperature and the heat load. The condenser inlet temperature and heat load range from 25 to 45 and from 11 to 23 kW, respectively, while the evaporator inlet secondary fluid temperature is maintained at 20 . As the condenser inlet air temperature increases, R32 system shows 0.1% to 6.7% higher COP. In the case of the heat load, R32 system shows 0.0% to 10.6% higher COP. The difference in the COP between the R32 and of R410A systems increases as the heat load and the condenser inlet air temperature increase.

Original languageEnglish
Pages (from-to)144-151
Number of pages8
JournalRefrigeration Science and Technology
VolumePart F147651
DOIs
Publication statusPublished - 2018 Jan 1
Event1st IIR International Conference on the Application of HFO Refrigerants, HFO 2018 - Birmingham, United Kingdom
Duration: 2018 Sep 22018 Sep 5

Fingerprint

Thermal load
condensers
Compaction
air intakes
Vapors
vapors
Air intakes
heat
Liquids
liquids
Temperature
inlet temperature
temperature
evaporators
Evaporators
compressors
Compressors
Numerical models
cycles
Fluids

Keywords

  • COP
  • Numerical simulation
  • R32
  • R410A
  • Vapor compression refrigeration cycle

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

Cite this

Numerical Study on the Performance of Vapor Compression Liquid Chillers using R32 and R410A. / Lee, Jeong Hoon; Kang, Hoon; Jung, Jongho; Lim, Junyub; Cho, Wonhee; Kim, Yong Chan.

In: Refrigeration Science and Technology, Vol. Part F147651, 01.01.2018, p. 144-151.

Research output: Contribution to journalConference article

Lee, Jeong Hoon ; Kang, Hoon ; Jung, Jongho ; Lim, Junyub ; Cho, Wonhee ; Kim, Yong Chan. / Numerical Study on the Performance of Vapor Compression Liquid Chillers using R32 and R410A. In: Refrigeration Science and Technology. 2018 ; Vol. Part F147651. pp. 144-151.
@article{06beebb22f2c4a23824dc10f853d0a23,
title = "Numerical Study on the Performance of Vapor Compression Liquid Chillers using R32 and R410A.",
abstract = "A numerical model is developed to predict the performance of vapor compression liquid chillers using R410A and R32. A new convergence method is employed to find the optimum compressor RPM at a given heat load. The superheat and subcooling are maintained constant for both R32 and R410A systems. The performance of the vapor compression cycle are analytically investigated according to the condenser inlet air temperature and the heat load. The condenser inlet temperature and heat load range from 25 to 45 and from 11 to 23 kW, respectively, while the evaporator inlet secondary fluid temperature is maintained at 20 . As the condenser inlet air temperature increases, R32 system shows 0.1{\%} to 6.7{\%} higher COP. In the case of the heat load, R32 system shows 0.0{\%} to 10.6{\%} higher COP. The difference in the COP between the R32 and of R410A systems increases as the heat load and the condenser inlet air temperature increase.",
keywords = "COP, Numerical simulation, R32, R410A, Vapor compression refrigeration cycle",
author = "Lee, {Jeong Hoon} and Hoon Kang and Jongho Jung and Junyub Lim and Wonhee Cho and Kim, {Yong Chan}",
year = "2018",
month = "1",
day = "1",
doi = "10.18462/iir.hfo.2018.1120",
language = "English",
volume = "Part F147651",
pages = "144--151",
journal = "Refrigeration Science and Technology",
issn = "0151-1637",

}

TY - JOUR

T1 - Numerical Study on the Performance of Vapor Compression Liquid Chillers using R32 and R410A.

AU - Lee, Jeong Hoon

AU - Kang, Hoon

AU - Jung, Jongho

AU - Lim, Junyub

AU - Cho, Wonhee

AU - Kim, Yong Chan

PY - 2018/1/1

Y1 - 2018/1/1

N2 - A numerical model is developed to predict the performance of vapor compression liquid chillers using R410A and R32. A new convergence method is employed to find the optimum compressor RPM at a given heat load. The superheat and subcooling are maintained constant for both R32 and R410A systems. The performance of the vapor compression cycle are analytically investigated according to the condenser inlet air temperature and the heat load. The condenser inlet temperature and heat load range from 25 to 45 and from 11 to 23 kW, respectively, while the evaporator inlet secondary fluid temperature is maintained at 20 . As the condenser inlet air temperature increases, R32 system shows 0.1% to 6.7% higher COP. In the case of the heat load, R32 system shows 0.0% to 10.6% higher COP. The difference in the COP between the R32 and of R410A systems increases as the heat load and the condenser inlet air temperature increase.

AB - A numerical model is developed to predict the performance of vapor compression liquid chillers using R410A and R32. A new convergence method is employed to find the optimum compressor RPM at a given heat load. The superheat and subcooling are maintained constant for both R32 and R410A systems. The performance of the vapor compression cycle are analytically investigated according to the condenser inlet air temperature and the heat load. The condenser inlet temperature and heat load range from 25 to 45 and from 11 to 23 kW, respectively, while the evaporator inlet secondary fluid temperature is maintained at 20 . As the condenser inlet air temperature increases, R32 system shows 0.1% to 6.7% higher COP. In the case of the heat load, R32 system shows 0.0% to 10.6% higher COP. The difference in the COP between the R32 and of R410A systems increases as the heat load and the condenser inlet air temperature increase.

KW - COP

KW - Numerical simulation

KW - R32

KW - R410A

KW - Vapor compression refrigeration cycle

UR - http://www.scopus.com/inward/record.url?scp=85066050058&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85066050058&partnerID=8YFLogxK

U2 - 10.18462/iir.hfo.2018.1120

DO - 10.18462/iir.hfo.2018.1120

M3 - Conference article

VL - Part F147651

SP - 144

EP - 151

JO - Refrigeration Science and Technology

JF - Refrigeration Science and Technology

SN - 0151-1637

ER -