Join us at the International Thermal Conductivity Conference (ITCC) and the International Thermal Expansion Symposium (ITES).

Thermal Conductivity Paper Database

Search academic papers below:

Recommended Papers for: Bjorn Petter Jelle

Total Papers Found: 7

Monodisperse Hollow Silica Nanospheres for Nano Insulation Materials: Synthesis, Characterization, and Life Cycle Assessment

This article reported on the synthesis, characterization, life cycle assessment (LCA) of nano insulation materials (NIMs) that are made of hollow silica nanospheres (HSNSs). The transient plane source (TPS) technique was used to determine the thermal properties of the HSNSs. The thermal conductivity of the HSNSs is quite low at 0.02 W/mK because thermal conductivity is predominantly size-dependent at the nanometer scale. The HSNS NIMs were found to be comparable ...

Author(s): , , ,

Investigating the Hygrothermal properties of compressed earthen bricks

This study investigated the relationship between hygrothermal properties and bulk density of compressed earthen bricks. Thermal conductivity of compressed earthen samples was measured using a thermal apparatus with transient plane source method. Compressed earthen material with lower bulk density was found to have a lower thermal conductivity than higher bulk density materials since low bulk density samples have more pores filled with air....

Author(s): , , , ,

Nano insulation materials: synthesis and life cycle assessment

Buildings are responsible for a large portion of the world’s energy use, so there is a high global demand for cost-efficient thermal insulating materials. In this paper, the thermal properties of hollow silica nanosphere nano insulation materials (HSNS NIMs) were examined to test their potential as superinsulating materials. A thermal constants analyzer measured the thermal conductivity of the NIMs using the transient plane source (TPS) method. Results showed that ...

Author(s): , ,

Monodisperse Hollow Silica Nanospheres for Nano Insulation Materials: Synthesis, Characterization, and Life Cycle Assessment

The authors present the synthesis of hollow silica nanospheres (HSNSs) by a template-assisted approach using polystyrene nanospheres as templates. These nanospheres could potentially be used as nano insulation materials due to their low thermal conductivity ~0.02 W/m K. The authors also examined the environmental footprint of these nanospheres by life cycle assessment, and it was found that they possess a high embodied energy. It was thus suggested that new synthetic ...

Author(s): , , ,

Thermal Conductivity of TiO2 Nanotubes

The authors present a method of preparation of TiO2 nanotubes by alkaline treatment (with NaOH) of TiO2 particles followed by acid-washing and annealing treatment. Theoretical and experimental studies on the thermal conductivity of TiO2 nanotubes is also presented. The thermal conductivity values determined experimentally matched well with theoretical values obtained. It was found that TiO2 nanotubes had a lower thermal conductivity than the original TiO2 particles. This phenomenon was attributed ...

Author(s): ,