Summary
In this study, the heat transfer and pressure drop characteristics of FC-72 in small channel heat sinks, which were designed for liquid cooling of electronic components, were measured by varying the mass flux, saturation temperature, and vapour quality. The small channels had circular cross-sections with diameters of 2 and 4 mm and length of 100 mm. The heat flux provided by the heaters in the copper block ranged from 0.5 to 3.0 W/cm2. Based on data comparisons, the existing pressure drop correlations were modified by introducing the effective viscosity including wall effects of the fluid in the small channel. The modified homogeneous pressure drop model yielded the best predictions with average and mean deviations of 0.9 and 27.0%, respectively. The measured heat transfer coefficient was also compared with the predictions obtained by using the existing heat transfer correlations. The Kandlikar correlation with the fluid surface parameter for water yielded consistent trends with the measured heat transfer coefficient. A new fluid surface parameter F(Fl) = 0.747 for FC-72 was proposed based on the present data, and satisfactory predictions were obtained with average and mean deviations of 0.4 and 7.0%, respectively.
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Details
- Original title: Flow boiling heat transfer coefficients and pressure drops of FC-72 in small channel heat sinks.
- Record ID : 2008-2449
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 31 - n. 6
- Publication date: 2008/09
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Indexing
- Themes: Heat transfer
- Keywords: Microchannel; Heat transfer; FC-72; Expérimentation; Boiling; Pressure drop
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Experimental study of flow boiling of FC-72 in ...
- Author(s) : HU X., LIN G., CAI Y., et al.
- Date : 2011/12
- Languages : English
- Source: Applied Thermal Engineering - vol. 31 - n. 17-18
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Flow boiling heat transfer of refrigerant FC-72...
- Author(s) : SARACENO L., CELATA G. P., FURRER M., et al.
- Date : 2012/03
- Languages : English
- Source: International Journal of thermal Sciences - vol. 53
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An experimental study on two-phase pressure dro...
- Author(s) : JANG Y. H., KIM B. S., KIM Y. C., et al.
- Date : 2007/08/21
- Languages : English
- Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
- Formats : PDF
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Impact of selected parameters on refrigerant fl...
- Author(s) : PIASECKA M.
- Date : 2015/08
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 56
- Formats : PDF
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Subcooled flow boiling heat transfer and associ...
- Author(s) : CHANG W. R., CHEN C. A., KE J. H., et al.
- Date : 2010/11
- Languages : English
- Source: International Journal of Heat and Mass Transfer - vol. 53 - n. 23-24
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