Thermophysical Properties And Heat Transfer Performance Of Al2O3/R-134a Nanorefrigerants
The past decade has seen the rapid development of nanofluids science in many aspects. In recent years, refrigerant-based nanofluids have been introduced as nanorefrigerants due to their significant effects over heat transfer performance. This study investigates the thermophysical properties, pressur...
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my.utem.eprints.216632021-08-16T21:37:29Z http://eprints.utem.edu.my/id/eprint/21663/ Thermophysical Properties And Heat Transfer Performance Of Al2O3/R-134a Nanorefrigerants Mohammed, Mahbubul Islam Shikh Anuar, Fadhilah Rahman, Saidur Leong, Kin Yuen Muhammad Afifi, Amalina T Technology (General) TJ Mechanical engineering and machinery The past decade has seen the rapid development of nanofluids science in many aspects. In recent years, refrigerant-based nanofluids have been introduced as nanorefrigerants due to their significant effects over heat transfer performance. This study investigates the thermophysical properties, pressure drop and heat transfer performance of Al2O3 nanoparticles suspended in 1, 1, 1, 2-tetrafluoroethane (R-134a). Suitable models from existing studies have been used to determine the thermal conductivity and viscosity of the nanorefrigerants for the nanoparticle concentrations of 1 to 5 vol.%. The pressure drop, pumping power and heat transfer coefficients of nanorefrigerant in a horizontal smooth tube have also been investigated with the same particle concentration at constant velocity of 5 m/s and uniform mass flux of 100 kg/m2 s. In this study, the thermal conductivity of Al2O3/R-134a nanorefrigerant increased with the augmentation of particle concentration and temperature however, decreased with particle size intensification. In addition, the results of viscosity, pressure drop, and heat transfer coefficients of the nanorefrigerant show a significant increment with the increase of volume fractions. Therefore, optimal particle volume fraction is important to be considered in producing nanorefrigerants that can enhance the performance of refrigeration systems. Elsevier Ltd. 2013 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/21663/2/Thermophysical%20properties%20and%20heat%20transfer%20performance%20of%20Alumina%20R134a%20nanorefrigerants.pdf Mohammed, Mahbubul Islam and Shikh Anuar, Fadhilah and Rahman, Saidur and Leong, Kin Yuen and Muhammad Afifi, Amalina (2013) Thermophysical Properties And Heat Transfer Performance Of Al2O3/R-134a Nanorefrigerants. International Journal Of Heat And Mass Transfer, 57. pp. 100-108. ISSN 0017-9310 https://www.sciencedirect.com/science/article/pii/S0017931012007727?via%3Dihub 10.1016/j.ijheatmasstransfer.2015.02.038 |
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T Technology (General) TJ Mechanical engineering and machinery Mohammed, Mahbubul Islam Shikh Anuar, Fadhilah Rahman, Saidur Leong, Kin Yuen Muhammad Afifi, Amalina Thermophysical Properties And Heat Transfer Performance Of Al2O3/R-134a Nanorefrigerants |
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The past decade has seen the rapid development of nanofluids science in many aspects. In recent years, refrigerant-based nanofluids have been introduced as nanorefrigerants due to their significant effects over heat transfer performance. This study investigates the thermophysical properties, pressure drop and heat transfer performance of Al2O3 nanoparticles suspended in 1, 1, 1, 2-tetrafluoroethane (R-134a). Suitable models from existing studies have been used to determine the thermal conductivity and viscosity of the nanorefrigerants for the nanoparticle concentrations of 1 to 5 vol.%. The pressure drop, pumping power and heat transfer coefficients of nanorefrigerant in a horizontal smooth tube have also been investigated with the same particle concentration at constant velocity of 5 m/s and uniform mass flux of 100 kg/m2 s. In this study, the thermal conductivity of Al2O3/R-134a nanorefrigerant increased with the augmentation of particle concentration and temperature however, decreased with particle size intensification. In addition, the results of viscosity, pressure drop, and heat transfer coefficients of the nanorefrigerant show a significant increment with the increase of volume fractions. Therefore, optimal particle volume fraction is
important to be considered in producing nanorefrigerants that can enhance the performance of refrigeration systems. |
format |
Article |
author |
Mohammed, Mahbubul Islam Shikh Anuar, Fadhilah Rahman, Saidur Leong, Kin Yuen Muhammad Afifi, Amalina |
author_facet |
Mohammed, Mahbubul Islam Shikh Anuar, Fadhilah Rahman, Saidur Leong, Kin Yuen Muhammad Afifi, Amalina |
author_sort |
Mohammed, Mahbubul Islam |
title |
Thermophysical Properties And Heat Transfer Performance Of Al2O3/R-134a Nanorefrigerants |
title_short |
Thermophysical Properties And Heat Transfer Performance Of Al2O3/R-134a Nanorefrigerants |
title_full |
Thermophysical Properties And Heat Transfer Performance Of Al2O3/R-134a Nanorefrigerants |
title_fullStr |
Thermophysical Properties And Heat Transfer Performance Of Al2O3/R-134a Nanorefrigerants |
title_full_unstemmed |
Thermophysical Properties And Heat Transfer Performance Of Al2O3/R-134a Nanorefrigerants |
title_sort |
thermophysical properties and heat transfer performance of al2o3/r-134a nanorefrigerants |
publisher |
Elsevier Ltd. |
publishDate |
2013 |
url |
http://eprints.utem.edu.my/id/eprint/21663/2/Thermophysical%20properties%20and%20heat%20transfer%20performance%20of%20Alumina%20R134a%20nanorefrigerants.pdf http://eprints.utem.edu.my/id/eprint/21663/ https://www.sciencedirect.com/science/article/pii/S0017931012007727?via%3Dihub |
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