Heat transfer in one-dimensional micro- and nano-cellular foams

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F13%3A43895656" target="_blank" >RIV/60461373:22340/13:43895656 - isvavai.cz</a>
Alternative codes found
RIV/49777513:23640/13:43918871
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0009250913002777" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0009250913002777</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ces.2013.04.018" target="_blank" >10.1016/j.ces.2013.04.018</a>

Result language
angličtina
Original language name
Heat transfer in one-dimensional micro- and nano-cellular foams
Original language description
We investigate heat transfer in one-dimensional multi-layer models of polymer foams and determine their equivalent thermal conductivities. The proposed model considers the participating gas and solid phases, i.e., combined heat transfer by conduction andradiation in both phases and partial photon reflection on phase interfaces. A correction for possible non-Fourier heat conduction in small gas cells, occurring in nanocellular foams, is implemented by the reduction of gas thermal conductivity based on the Knudsen number. The developed model was used for the optimization of foam structure with respect to its insulation properties. We found that although radiation can account for more than one-third of the total heat flux, it can be reduced in foams withcell-sizes below 100?m and be almost nullified by decreasing the foam cell size to sub-micron range. The presented model is a starting point for the development of an advanced model of heat transfer in spatially three-dimensional polymer
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
S - Specificky vyzkum na vysokych skolach

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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