Content

Abstract
An evaluation of scattering and absorbing abilities of light heat insulating materials in the IR spectrum range is given. The generalized form of Fourier equation application to such materials with taking into account radiant environment heat conduction is shown. Convectionless measurements of material specimen thermal resistance of different thickness are performed. Theoretical substantiations and ideas concerning heatprotective material properties are reliably confirmed. Exact values of total material heat conduction are obtained, and values of material radiant heat conduction, as well as of thermal radiation penetration depth into them are estimated.
References
1. Crystal polyolefins: Collection of monograph articles / Edited by R.A. Ruff and K.V. Duck, Vol. 2, Structure and properties. Moscow: Khimiya, 1970, 469 p. 2. Ziegel R., Howell Dj. Heat exchange by radiation, Moscow: Mir, 1975, 934 p. 3. Kutateladze S.S. Fundamental of the heat exchange theory. The 5th revised edition, Moscow: Atomizdat, 1979, 416 p. 4. Shamparov E. Yu., Zhagrina I.N. Installation for precision convectionless measurements of thermal permeability of materials at a temperature close to the room / Useful model RF #166709. 2016. Bulletin #34. 5. Physical values: A handbook / Edited by I.S. Grigoriev and E.Z. Meylikhov, Moscow: Energoatomizdat, 1991, 1232 p.
Keywords
- thermal radiation
- environment scattering and absorption
- Kirchhoff’s law
- radiant heat conduction
- Fourier equation
- radiationconductive heat transport
- material thermal resistance
Recommended articles