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ORIGINAL PAPER
An Analysis of Relations for Determining the Thermal Conductivity of Rigid Polymer Foams
1
University of Zielona Góra, Faculty of Civil Engineering, Architecture and Environmental Engineering 9 Licealna str., 65-417 , Zielona Góra, Poland
2
Pope John Paul II State School of Higher Education in Biala Podlaska, Faculty of Science 95/97 Sidorska Str. 21-500 Biala Podlaska, Poland
3
Brest State Technical University, Faculty of Civil Engineering, 267 Moskovskaya Str, 224017, Brest, Belarus
4
Bialystok University of Technology, Faculty of Civil and Environmental Engineering, 45 Wiejska Str, 15-351, Bialystok, Poland
Online publication date: 2018-11-21
Publication date: 2018-11-01
International Journal of Applied Mechanics and Engineering 2018;23(4):1015-1023
KEYWORDS
thermal insulationeffective thermal conductivityrigid polymer foammathematical modelstructure of used polymer foamsanalysis of experimental data
ABSTRACT
In the paper the authors present the effectiveness of the generalized thermal conductivity method for polymer foams, including modelling their geometrical structure. Calculations of the effective thermal conductivity coefficient λ are based on the generally accepted assumption of the additivity of different thermal exchange mechanisms in porous media and this coefficient is presented as a sum the coefficients of conductive λq, radiative λp, and convective λk thermal conductivity. However, in literature not enough attention is given to relations determined by means of the theory of generalized conductivity, including modelling the geometrical structure. This paper presents an analysis of these relations and verifies their ability to predict experimental data in comparison with the best formulae included in the paper [2].
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