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K6 Superinsulations

Abstract

This chapter describes theoretical and experimental methods for determining heat transport through superinsulations, that is, thermal insulations with a permeability to heat significantly less than that of motionless air. One means of satisfying this condition is to evacuate beds of finely divided solids. Considerably less heat flows through evacuated, highly specular metal foils that are available either as rolls or blankets. This type also referenced as “multilayer superinsulations” with a discontinuous structure, includes Dewar (thermos) flasks and locally supported insulations. Thermal transport through multilayer insulations will be described in the first part of this chapter. The second part concerns superinsulations with a continuous structure, for example, evacuated powders and fibers, like in panel superinsulations.

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Title
K6 Superinsulations
Book Title
VDI Heat Atlas
Book DOI
10.1007/978-3-540-77877-6
Chapter DOI
10.1007/978-3-540-77877-6_69
Part of
VDI-Buch
Volume
Editors
Authors
  • Harald Reiss (1_69)
  • Author Affiliation
  • 1_69 Julius-Maximilians-Universität Würzburg, Würzburg, Germany
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