Abstract
Materials properties of four different TIM types of various thicknesses were measured partly as such and partly with facing(s). A small pilot research was also carried out in VTTs test house. The results achieved show great tailoring possibilities of TIM systems with materials selection. The thermal conductivities varies from aerogels 0.02 W/mK to 0.107 W/mK of capillary TIM with big capillaries. The temperature dependence of thermal conductivity is small with aerogel products and can be held as insignificant in solutions where maximum and average temperatures are generally < 100 deg C. The thermal conductivities of capillar and cellular products depend clearly on temperature. The radiation transmission properties have also a great scale from transmittance of aerogel granulates 0.4 to 0.82 of capillary TIM with big capillaries. Variations of thicknesses and facings can be used to adjust transmittance. The influence of TIM on air sound insulation of windows was positive. Especially traffic noise reduction index was about 10 dB better with TIM filled windows compared to ordinary air filled ones. The achieved results indicate that in window or glazed roof or wall solutions TI-materials can be exploited efficiently. In wall solutions, the properties of TI-material and facings together with heat capacity/transmission
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Citation Formats
Rautiainen, L.
Transparent thermal insulations (TIM). Performance properties.
Finland: N. p.,
1992.
Web.
Rautiainen, L.
Transparent thermal insulations (TIM). Performance properties.
Finland.
Rautiainen, L.
1992.
"Transparent thermal insulations (TIM). Performance properties."
Finland.
@misc{etde_10136582,
title = {Transparent thermal insulations (TIM). Performance properties}
author = {Rautiainen, L}
abstractNote = {Materials properties of four different TIM types of various thicknesses were measured partly as such and partly with facing(s). A small pilot research was also carried out in VTTs test house. The results achieved show great tailoring possibilities of TIM systems with materials selection. The thermal conductivities varies from aerogels 0.02 W/mK to 0.107 W/mK of capillary TIM with big capillaries. The temperature dependence of thermal conductivity is small with aerogel products and can be held as insignificant in solutions where maximum and average temperatures are generally < 100 deg C. The thermal conductivities of capillar and cellular products depend clearly on temperature. The radiation transmission properties have also a great scale from transmittance of aerogel granulates 0.4 to 0.82 of capillary TIM with big capillaries. Variations of thicknesses and facings can be used to adjust transmittance. The influence of TIM on air sound insulation of windows was positive. Especially traffic noise reduction index was about 10 dB better with TIM filled windows compared to ordinary air filled ones. The achieved results indicate that in window or glazed roof or wall solutions TI-materials can be exploited efficiently. In wall solutions, the properties of TI-material and facings together with heat capacity/transmission properties of wall structure, determines the performance of the system.}
place = {Finland}
year = {1992}
month = {Dec}
}
title = {Transparent thermal insulations (TIM). Performance properties}
author = {Rautiainen, L}
abstractNote = {Materials properties of four different TIM types of various thicknesses were measured partly as such and partly with facing(s). A small pilot research was also carried out in VTTs test house. The results achieved show great tailoring possibilities of TIM systems with materials selection. The thermal conductivities varies from aerogels 0.02 W/mK to 0.107 W/mK of capillary TIM with big capillaries. The temperature dependence of thermal conductivity is small with aerogel products and can be held as insignificant in solutions where maximum and average temperatures are generally < 100 deg C. The thermal conductivities of capillar and cellular products depend clearly on temperature. The radiation transmission properties have also a great scale from transmittance of aerogel granulates 0.4 to 0.82 of capillary TIM with big capillaries. Variations of thicknesses and facings can be used to adjust transmittance. The influence of TIM on air sound insulation of windows was positive. Especially traffic noise reduction index was about 10 dB better with TIM filled windows compared to ordinary air filled ones. The achieved results indicate that in window or glazed roof or wall solutions TI-materials can be exploited efficiently. In wall solutions, the properties of TI-material and facings together with heat capacity/transmission properties of wall structure, determines the performance of the system.}
place = {Finland}
year = {1992}
month = {Dec}
}