Thermal performance analysis of Al2O3/R-134a nanorefrigerant

Mahbubul, I. M., Saadah, A., Saidur, R., Khairul, M. A. and Kamyar, A. (2015) Thermal performance analysis of Al2O3/R-134a nanorefrigerant. International Journal of Heat and Mass Transfer, 85 1034-1040. doi:10.1016/j.ijheatmasstransfer.2015.02.038


Author Mahbubul, I. M.
Saadah, A.
Saidur, R.
Khairul, M. A.
Kamyar, A.
Title Thermal performance analysis of Al2O3/R-134a nanorefrigerant
Formatted title
Thermal performance analysis of Al2O3/R-134a nanorefrigerant
Journal name International Journal of Heat and Mass Transfer   Check publisher's open access policy
ISSN 0017-9310
1879-2189
Publication date 2015-06
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.ijheatmasstransfer.2015.02.038
Open Access Status
Volume 85
Start page 1034
End page 1040
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Collection year 2016
Language eng
Formatted abstract
Nowadays, nanofluids are being considered as an efficient heat transfer fluid in various thermal applications. Refrigerant-based nanofluids, termed as “nanorefrigerants”, have the potential to improve the heat transfer performances of refrigeration and air-conditioning systems. This study analyzed the thermophysical properties and their effects on the coefficient of performance (COP) resulted by addition of 5 vol.% Al2O3 nanoparticles into R-134a refrigerant at temperatures of 283–308 K. The analysis has been done for a uniform mass flux through a horizontal smooth tube using established correlations. The results indicate that the thermal conductivity, dynamic viscosity, and density of Al2O3/R-134a nanorefrigerant increased about 28.58%, 13.68%, and 11%, respectively compared to the base refrigerant (R-134a) for the same temperature. On the other hand, specific heat of nanorefrigerant is slightly lower than that of R-134a. Moreover, Al2O3/R-134a nanorefrigerant shows the highest COP of 15%, 3.2%, and 2.6% for thermal conductivity, density, and specific heat, respectively compared to R-134a refrigerant. Therefore, application of nanoparticles in refrigeration and air-conditioning systems is promising to improve the performances of the systems.
Keyword Nanofluid
Thermal conductivity
Viscosity
Density
Specific heat
Coefficient of performance
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2016 Collection
 
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Created: Wed, 11 Mar 2015, 10:44:11 EST by Amin Kamyar on behalf of School of Mechanical and Mining Engineering