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International Journal of Energy for a Clean Environment
SJR: 0.195 SNIP: 0.435 CiteScore™: 0.74

ISSN 印刷: 2150-3621
ISSN オンライン: 2150-363X

International Journal of Energy for a Clean Environment

Formerly Known as Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.2018024395
pages 287-302

A COMPARATIVE STUDY ON THE PERFORMANCE OF THE DOMESTIC REFRIGERATOR USING R600A AND LPG WITH VARYING REFRIGERANT CHARGE AND CAPILLARY TUBE LENGTH

Sunday O. Oyedepo
The Energy and Environment Research Group (TEERG), Mechanical Engineering Department, Covenant University, Ogun State, Nigeria
R. O. Fagbenle
Mechanical Engineering Department, University of Ibadan, Nigeria
Taiwo O. Babarinde
Department of Mechanical Engineering Science, University of Johannesburg, South Africa
K. M. Odunfa
Mechanical Engineering Department, University of Ibadan, Nigeria
R. O. Leramo
The Energy and Environment Research Group (TEERG), Mechanical Engineering Department, Covenant University, Ota, Nigeria
O. S. Ohunakin
The Energy and Environment Research Group (TEERG), Mechanical Engineering Department, Covenant University, Ogun State, Nigeria
Oluseyi O. Ajayi
Mechanical Engineering Department, Covenant University, P.M.B. 1023, Ota, Nigeria
P. O. Babalola
Mechanical Engineering Department, Covenant University, Ota, Nigeria
O. Kilanko
Mechanical Engineering Department, Covenant University, Ota, Nigeria
A. D. Oyegbile
Mechanical Engineering Department, Covenant University, Ota, Nigeria
D. Lawson-Jack
Mechanical Engineering Department, Covenant University, Ota, Nigeria

要約

A comparative experimental study on the performance of a domestic refrigerator using R600A and LPG with a varying refrigerant charge (wr) and capillary tube length (L) was carried out. The enthalpy of the refrigerants R600A and LPG for each data set for the experimental conditions were obtained by using REFPROP soft ware (version 9.0). The results show that the design temperature and pull-down time set by ISO for a small refrigerator are achieved earlier using refrigerant charge 60 g of LPG with a 1.5 m capillary tube length. The highest COP (4.8) was obtained using 60-g charge of LPG with L of 1.5-m. The average COP obtained using LPG was 1.14% higher than that of R600A. Based on the result of electric power consumption, R600A offered lowest power consumption. The compressor consumed 20% less power compared to LPG in the system. The system performed best with LPG in terms of COP and cooling capacity, while in terms of power consumption R600A performed best.


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