Experimental investigation and development of new correlation for thermal conductivity and viscosity of BioGlycol/water based SiO2 nanofluids
Nanofluids are a new class of engineered heat transfer fluids which exhibit superior thermophysical properties and have potential applications in numerous important fields. In this study, nanofluids have been prepared by dispersing SiO2 nanoparticles in different base fluids such as 20:80% and 30:70...
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| Format: | Article |
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Elsevier Ltd
2016
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| author | Abdolbaqi, M. K. Sidik, N. A. C. Rahim, M. F. A. Mamat, R. Azmi, W. H. Yazid, M. N. A. W. M. Najafi, G. |
| author_facet | Abdolbaqi, M. K. Sidik, N. A. C. Rahim, M. F. A. Mamat, R. Azmi, W. H. Yazid, M. N. A. W. M. Najafi, G. |
| author_sort | Abdolbaqi, M. K. |
| collection | ePrints |
| description | Nanofluids are a new class of engineered heat transfer fluids which exhibit superior thermophysical properties and have potential applications in numerous important fields. In this study, nanofluids have been prepared by dispersing SiO2 nanoparticles in different base fluids such as 20:80% and 30:70% by volume of BioGlycol (BG)/water (W) mixtures. Thermal conductivity and viscosity experiments have been conducted in temperatures between 30 °C and 80 °C and in volume concentrations between 0.5% and 2.0%. Results show that thermal conductivity of nanofluids increases with increase of volume concentrations and temperatures. Similarly, viscosity of nanofluid increases with increase of volume concentrations but decreases with increase of temperatures. The maximum thermal conductivity enhancement among all the nanofluids was observed for 20:80% BG/W nanofluid about 7.2% in the volume concentration of 2.0% at a temperature of 70 °C. Correspondingly among all the nanofluids maximum viscosity enhancement was observed for 30:70% BG/W nanofluid about 1.38-times in the volume concentration of 2.0% at a temperature of 70 °C. The classical models and semi-empirical correlations failed to predict the thermal conductivity and viscosity of nanofluids with effect of volume concentration and temperatures. Therefore, nonlinear correlations have been proposed with 3% maximum deviation for the estimation of thermal conductivity and viscosity of nanofluids. |
| first_indexed | 2024-03-05T20:02:51Z |
| format | Article |
| id | utm.eprints-72006 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:02:51Z |
| publishDate | 2016 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | utm.eprints-720062017-11-26T03:37:02Z http://eprints.utm.my/72006/ Experimental investigation and development of new correlation for thermal conductivity and viscosity of BioGlycol/water based SiO2 nanofluids Abdolbaqi, M. K. Sidik, N. A. C. Rahim, M. F. A. Mamat, R. Azmi, W. H. Yazid, M. N. A. W. M. Najafi, G. TJ Mechanical engineering and machinery Nanofluids are a new class of engineered heat transfer fluids which exhibit superior thermophysical properties and have potential applications in numerous important fields. In this study, nanofluids have been prepared by dispersing SiO2 nanoparticles in different base fluids such as 20:80% and 30:70% by volume of BioGlycol (BG)/water (W) mixtures. Thermal conductivity and viscosity experiments have been conducted in temperatures between 30 °C and 80 °C and in volume concentrations between 0.5% and 2.0%. Results show that thermal conductivity of nanofluids increases with increase of volume concentrations and temperatures. Similarly, viscosity of nanofluid increases with increase of volume concentrations but decreases with increase of temperatures. The maximum thermal conductivity enhancement among all the nanofluids was observed for 20:80% BG/W nanofluid about 7.2% in the volume concentration of 2.0% at a temperature of 70 °C. Correspondingly among all the nanofluids maximum viscosity enhancement was observed for 30:70% BG/W nanofluid about 1.38-times in the volume concentration of 2.0% at a temperature of 70 °C. The classical models and semi-empirical correlations failed to predict the thermal conductivity and viscosity of nanofluids with effect of volume concentration and temperatures. Therefore, nonlinear correlations have been proposed with 3% maximum deviation for the estimation of thermal conductivity and viscosity of nanofluids. Elsevier Ltd 2016 Article PeerReviewed Abdolbaqi, M. K. and Sidik, N. A. C. and Rahim, M. F. A. and Mamat, R. and Azmi, W. H. and Yazid, M. N. A. W. M. and Najafi, G. (2016) Experimental investigation and development of new correlation for thermal conductivity and viscosity of BioGlycol/water based SiO2 nanofluids. International Communications in Heat and Mass Transfer, 77 . pp. 54-63. ISSN 0735-1933 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978402353&doi=10.1016%2fj.icheatmasstransfer.2016.07.001&partnerID=40&md5=d70f93174e12d9d2aed1b7851f1734a5 |
| spellingShingle | TJ Mechanical engineering and machinery Abdolbaqi, M. K. Sidik, N. A. C. Rahim, M. F. A. Mamat, R. Azmi, W. H. Yazid, M. N. A. W. M. Najafi, G. Experimental investigation and development of new correlation for thermal conductivity and viscosity of BioGlycol/water based SiO2 nanofluids |
| title | Experimental investigation and development of new correlation for thermal conductivity and viscosity of BioGlycol/water based SiO2 nanofluids |
| title_full | Experimental investigation and development of new correlation for thermal conductivity and viscosity of BioGlycol/water based SiO2 nanofluids |
| title_fullStr | Experimental investigation and development of new correlation for thermal conductivity and viscosity of BioGlycol/water based SiO2 nanofluids |
| title_full_unstemmed | Experimental investigation and development of new correlation for thermal conductivity and viscosity of BioGlycol/water based SiO2 nanofluids |
| title_short | Experimental investigation and development of new correlation for thermal conductivity and viscosity of BioGlycol/water based SiO2 nanofluids |
| title_sort | experimental investigation and development of new correlation for thermal conductivity and viscosity of bioglycol water based sio2 nanofluids |
| topic | TJ Mechanical engineering and machinery |
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