PU foams: Modelling of heat insulation properties and their degradation in time

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F17%3A43914186" target="_blank" >RIV/60461373:22340/17:43914186 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/B978-0-444-63965-3.50081-7" target="_blank" >http://dx.doi.org/10.1016/B978-0-444-63965-3.50081-7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/B978-0-444-63965-3.50081-7" target="_blank" >10.1016/B978-0-444-63965-3.50081-7</a>

Result language
angličtina
Original language name
PU foams: Modelling of heat insulation properties and their degradation in time
Original language description
In this paper we present a multi-scale model for the prediction of ageing of heat insulation properties of polyurethane (PU) foams. The model consists of higher scale model and lower scale model coupled together by the MoDeNa multi-scale framework. The higher scale model is responsible for the simulation of gas permeation through the foam, and thus calculation of gas phase composition in time. Heat insulation properties are determined through the surrogate model, which is automatically fitted to results of the lower scale model. The lower scale model takes into account foam morphology and both radiative and conductive contributions to heat transfer and calculates the foam equivalent conductivity. Solubility and diffusivity of gases in PU were determined experimentally. The overall model provides a valuable insight into the ageing process of PU foams.
Czech name
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Czech description
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Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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