Category: Transient Plane Source
Abstract: As the world works to combat climate change, focus has turned to reducing energy use. More efficient thermal insulation could drastically reduce the energy use of residential homes. In this paper, the research team focused on reducing the thermal conductivity of polymeric foams. A number of foam samples with varying cell sizes between 90nm and 100um were created, to show that reducing pore size also reduces the thermal conductivity. The team was able to identify heat transfer mechanisms through the development of a new characterization process. They proved that the Knudsen effect takes place in nanocellular polymeric foams. The Hot Disk TPS was used to measure the thermal conductivity of the foams in atmospheric and vacuum conditions.
Reference: Polymer, 56, (January 2015), pp 57-67