Effective thermal conductivity of granulated two-phase systems at interstitial air pressures |
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| Authors: | R N Pande D R Chaudhary |
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| Affiliation: | (1) Department of Physics, University of Rajasthan, 302 004 Jaipur, India;(2) Government College, Dholpur, Rajasthan, India |
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| Abstract: | Considering the htermal conduction through molecular collisions an expression for the effective thermal conductivityλ e of loose and granular two-phase materials at different interstitial air pressure has been derived. The dependence ofλ e on pore and particle sizes, characteristic pressure and radiative heat transfer is also discussed. Calculated values ofλ e of glass beads and loose building materials are compared with reported results. |
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| Keywords: | Characteristic pressure effective mean free path molecular collisions pore diameter |
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