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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Computer Aided Chemical Engineering

ISBN

—

ISSN

1570-7946

e-ISSN

neuvedeno

Počet stran výsledku

6

Strana od-do

475-480

Název nakladatele

Elsevier B.V.

Místo vydání

Amsterdam

Místo konání akce

Barcelona

Datum konání akce

1. 10. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000417380000081