An analysis of relations for determining the thermal conductivity of rigid polymer foam

• Autorzy: Alsabry A. , Nikitsin V. I. , Kofanov V. A. , Backiel-Brzozowska B.

Identyfikatory

DOI

10.2478/ijame-2018-0058

• Języki publikacji: EN

Abstrakty

EN

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].

Słowa kluczowe

EN

thermal insulation; effective thermal conductivity; rigid polymer foam; mathematical model; analysis of experimental datas

PL

izolacja termiczna; przewodzenie ciepła; pianka polimerowa; model matematyczny

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2018
• Tom: Vol. 23, no. 4
• Strony: 1015--1023
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Alsabry A.

• University of Zielona Góra Faculty of Civil Engineering, Architecture and Environmental Engineering 9 Licealna str., 65-417 Zielona Góra, POLAND

autor

Nikitsin V. I.

• Pope John Paul II State School of Higher Education in Biala Podlaska Faculty of Science 95/97 Sidorska Str. 21-500 Biala Podlaska, POLAND

autor

Kofanov V. A.

• Brest State Technical University, Faculty of Civil Engineering 267 Moskovskaya Str, 224017 Brest, BELARUS

autor

Backiel-Brzozowska B.

• Bialystok University of Technology, Faculty of Civil and Environmental Engineering 45 Wiejska Str, 15-351 Bialystok, POLAND

Bibliografia

• [1] Lykov A.V. (1971): Heat and Mass Exchange. – Moscow: Moscow Publishing House.
• [2] Collishaw P.G. and Evans J.R.G. (1994): An assessment of expressions for the apparent thermal conductivity of cellular materials. – Journal of Materials Science, vol.29, pp.486-498.
• [3] Gur′ev V.V., Žoludov V.S. and Petrov-Denisov V.G. (2003): Thermal Insulation in Industry. Theory and Calculations. – Moscow: Strojizdat.
• [4] Shi M., Li X. and Chen Y. (2006): Determination of effective thermal conductivity for polyurethane foam by use of fractal method. – Science in China Series E: Technological Sciences, vol.49, No.4, pp.468-475.
• [5] Dul′nev G.N. and Novikov V.V. (1991): Transfer Processes in Non-homogenous Media. – Leningrad: Energoatomizdat.
• [6] Kan A. and Han H. (2013): Effective thermal conductivity of open cell polyurethane foam based on fractal theory. – Advances in Materials Science and Engineering, vol. 2013, Article ID 125267. -Mode of access. -Date of access: 20.08.2017.
• [7] Hahn H.T. (1987): Hydrothermal damage in graphite/epoxy laminates. – J. Eng. Mater. Technol., vol.109, No.1. pp.3-11.
• [8] Zarr R.R. and Nguyen T. (1994): Effects of humidity and elevated temperature on the density and thermal conductivity of a rigid polyisocyanurate foam. – J. Cell. Plast. vol.30, pp.422-430.
• [9] Žurkov S.N., Kukcenko V.S. and Slucker A.I. (1971): Micromechanics of polymer destruction. – Problems of strength, No.2, pp.45-50.
• [10] Nikitin W. and Łapko A. (1999): Predicting the deterioration of the insulating properties of covering wall insulation. – Construction Defects: Materials from the XIX Scientific and Technical Conference), T.1, pp.415–422.
• [11] Obelevskij V.I. (1951): Calculation of generalized conductivity of heterogeneous systems. – Journal of technical physics, T.21, No.6, pp.667-685.
• [12] Domínguez-Muñoz F., Anderson B., Cejudo-López J.M. and Carrillo-Andrés A. (2009): Uncertainty in the thermal conductivity of insulation materials. – Building Simulation: materials XI International IBPSA Conference, Glasgow, pp.1008-1013.
• [13] Berge A. and Johansson P. (2012): Literature review of high performance thermal insulation. – Report in Building Physics, Department of Civil and Environmental Engineering, Division of Building Technology, Building Physics, Chalmers University of Technology, Gothenburg, Sweden.
• [14] Jarfelt U. and Ramnäs O. (2006): Thermal conductivity of polyurethane foam - best performance. – 10th International Symposium on District Heating and Cooling, Hanover, Germany.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019)