A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Aerogels for Thermal Insulation
Abstract The characteristic feature of aerogels which makes them suitable as efficient thermal insulations is their microporosity. Pore diameters within the aerogel structure in the range of 50 to 100 nm limit the mean free path of air molecules. Even at ambient air pressure the gaseous thermal conductivity within the aerogels is thus considerably lower than the conductivity of free air (0.026 W/mK). Fig. 1 depicts the variation of the thermal conductivity of a monolithic silica aerogel with the internal gas pressure [1] in comparison with an aerogel powder. The thermal conductivity of the monolithic aerogel is around 0.018 W/mK at ambient pressure (1 bar). When the sample is evacuated to pressures below 10 mbar, the gaseous conductivity is 0.007 W/mK.
Aerogels for Thermal Insulation
Abstract The characteristic feature of aerogels which makes them suitable as efficient thermal insulations is their microporosity. Pore diameters within the aerogel structure in the range of 50 to 100 nm limit the mean free path of air molecules. Even at ambient air pressure the gaseous thermal conductivity within the aerogels is thus considerably lower than the conductivity of free air (0.026 W/mK). Fig. 1 depicts the variation of the thermal conductivity of a monolithic silica aerogel with the internal gas pressure [1] in comparison with an aerogel powder. The thermal conductivity of the monolithic aerogel is around 0.018 W/mK at ambient pressure (1 bar). When the sample is evacuated to pressures below 10 mbar, the gaseous conductivity is 0.007 W/mK.
Aerogels for Thermal Insulation
Caps, R. (author) / Fricke, J. (author)
2004-01-01
5 pages
Article/Chapter (Book)
Electronic Resource
English
Nanocellulose Aerogels as Thermal Insulation Materials
| Springer Verlag | 2016
Aerogels: The Leading Edge in Thermal Insulation
| British Library Online Contents | 1995
Ultralow-density and high-strength graphene aerogels composites for thermal insulation
| British Library Online Contents | 2017
A Review on Advancements of Novel Building Thermal Insulation Materials: Zirconia Aerogels
| Springer Verlag | 2023
Aerogels for insulation: it's all about particle size
| British Library Online Contents | 2014