Energy transport in porous-insulator systems. 2: Performance of vertical enclosures

Studies reported are concerned with a limited number of insulator systems types. Low density glass fiber batts have been arranged in vertical orientations within the test section of the Stony Brook 4.0 ft by 5.0 ft double heat transfer gauge test apparatus. In this apparatus, the test section depth can be varied from less than one inch to dimensions of nine inches and above. The principal boundaries of the test section are defined by the innermost aluminum plates of the two 4.0 ft by 5.0 ft heat transfer gauges. Extensive thermocouple information on temperatures and temperature distributions of all four heat transfer gauge plates is obtained and recorded. Individual thermocouples are read to better than 0.1 F. A schematic of the double heat transfer gauge test apparatus is shown. A discussion of the formula, methods, and expected accuracy of R-value measurements derived from the double heat transfer gauge test apparatus is given. Two general kinds of observations have been made: cellularization effects and convectively induced air intrusion effects. These are discussed.