Effects of Compressive Loads on the Heat Flux Through Multilayer Insulations
Compressive loads—either caused by atmospheric pressure or developed during the application of multilayer insulations—are already known to reduce the overall effectiveness of insulation. Figure 1 shows the effect of compression on the heat flux through 15 multilayer insulations. The increase in heat flux after a compressive load of 2 psi has been reached is of comparable magnitude for all insulations tested. When compressive loads up to 2 psi are applied, the majority of the insulations show a heat flux about 100 times greater than the no-load condition.
KeywordsHeat Flux Compressive Load Polyurethane Foam Thermal Contact Resistance External Compression
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