Performance characteristics of an apparatus based on the curve-fitting method for measuring thermal properties at cryogenic temperatures

摘要: Abstract This paper describes the performance characteristics of a new test apparatus and measured results using apparatus. It has been developed on basis Harmathy's curve-fitting method to measure, in short time, physical properties nonmetallic materials for cryogenic storage tank. The used measure heat capacity, thermal conductivity, diffusivity at same time temperature range approximately −180°C +50°C. With this conductivity can be over wide 0.01 kcal m −1 h °C 10 investigated were structural such as concrete, wood, frozen soil, autoclaved lightweight concrete (ALC) insulation calcium silicate, phenolic foam, polyurethane foam.