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, Yongchan
N1 - Funding Information:
This research project is supported by LIG NexOne and KETEP energy technology development project (No. 20172020108580).
Publisher Copyright:
© 2018 International Institute of Refrigeration. All rights reserved.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2018
Y1 - 2018
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
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U2 - 10.18462/iir.hfo.2018.1120
DO - 10.18462/iir.hfo.2018.1120
M3 - Conference article
AN - SCOPUS:85066050058
SN - 0151-1637
VL - Part F147651
SP - 144
EP - 151
JO - Refrigeration Science and Technology
JF - Refrigeration Science and Technology
T2 - 1st IIR International Conference on the Application of HFO Refrigerants, HFO 2018
Y2 - 2 September 2018 through 5 September 2018
ER -