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Thermal conductivity of frost: literature review and correlation of data.
Number: pap. n. 35
Author(s) : NEGRELLI S., HERMES C. J. L.
Summary
The present work is aimed at advancing a correlation for the thermal conductivity of frost. A theoretical analysis was conducted based the limiting cases of serial and parallel association of the thermal resistances of moist air and ice crystals, thus setting the theoretical background for a dimensionless model for the thermal conductivity as a function of the porosity of the frosted medium. Experimental data obtained elsewhere (Pitman and Zuckerman, 1967; Brian et al., 1969; Auracher, 1986; Na and Webb, 2004) for a wide wall temperature span were employed to fit the theoretical model to come out with a semi-empirical correlation for the thermal conductivity of frost. Comparisons of the proposed correlation with the experimental data showed that the correlation is able to predict 81% of the data points (153 out of 188) within the 15% thresholds.
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Details
- Original title: Thermal conductivity of frost: literature review and correlation of data.
- Record ID : 30015071
- Languages: English
- Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
- Publication date: 2015/08/16
- DOI: http://dx.doi.org/10.18462/iir.icr.2015.0035
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Indexing
- Themes: Heat transfer
- Keywords: Thermal conductivity; Frost; Correlation; Review; Expérimentation
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