Abstract
Prototypes of insulating shutters for seasonal use have been developed at the Thermal Insulation Laboratory based upon acrylic rib-plates filled with granular silica aerogel (BASF, diameter 1-8 mm). The design has been chosen as an optimization of the net heat loss coefficient with respect to thermal bridge effects and solar transmittance. Shutters positioned inside of a normal double-pane window have been tested under real weather conditions. UA-values for the window and the window with shutter are measured to be 3.1 W/K and 1.6 W/K respectively. The corresponding direct solar transmittance is 0.75 and 0.45 respectively. Three test samples have been mounted on the outside of a south facing wall for investigation of different shutter designs with respect to settling problems of the granular silica aerogel. The three test samples are differing in rib distance and degree of sealing against moisture. The investigation and documentation were carried out by following the evolution of each test specimen and taking photographs at regular time intervals. A rib distance of 200 mm seems satisfactory to avoid any settling of the material. The sealing of the shutter edges is very important as the form of granular silica aerogel used is very sensitive to the presence
More>>
Citation Formats
Schultz, J M.
Insulating shutters with granular silica aerogel.
Denmark: N. p.,
1993.
Web.
Schultz, J M.
Insulating shutters with granular silica aerogel.
Denmark.
Schultz, J M.
1993.
"Insulating shutters with granular silica aerogel."
Denmark.
@misc{etde_10141232,
title = {Insulating shutters with granular silica aerogel}
author = {Schultz, J M}
abstractNote = {Prototypes of insulating shutters for seasonal use have been developed at the Thermal Insulation Laboratory based upon acrylic rib-plates filled with granular silica aerogel (BASF, diameter 1-8 mm). The design has been chosen as an optimization of the net heat loss coefficient with respect to thermal bridge effects and solar transmittance. Shutters positioned inside of a normal double-pane window have been tested under real weather conditions. UA-values for the window and the window with shutter are measured to be 3.1 W/K and 1.6 W/K respectively. The corresponding direct solar transmittance is 0.75 and 0.45 respectively. Three test samples have been mounted on the outside of a south facing wall for investigation of different shutter designs with respect to settling problems of the granular silica aerogel. The three test samples are differing in rib distance and degree of sealing against moisture. The investigation and documentation were carried out by following the evolution of each test specimen and taking photographs at regular time intervals. A rib distance of 200 mm seems satisfactory to avoid any settling of the material. The sealing of the shutter edges is very important as the form of granular silica aerogel used is very sensitive to the presence of free water, which makes the silica aerogel turn white and degenerate to a white powder. However, the granular silica aerogel is now available in a surface treated hydrophobic form. (au) (102 refs.)}
place = {Denmark}
year = {1993}
month = {Nov}
}
title = {Insulating shutters with granular silica aerogel}
author = {Schultz, J M}
abstractNote = {Prototypes of insulating shutters for seasonal use have been developed at the Thermal Insulation Laboratory based upon acrylic rib-plates filled with granular silica aerogel (BASF, diameter 1-8 mm). The design has been chosen as an optimization of the net heat loss coefficient with respect to thermal bridge effects and solar transmittance. Shutters positioned inside of a normal double-pane window have been tested under real weather conditions. UA-values for the window and the window with shutter are measured to be 3.1 W/K and 1.6 W/K respectively. The corresponding direct solar transmittance is 0.75 and 0.45 respectively. Three test samples have been mounted on the outside of a south facing wall for investigation of different shutter designs with respect to settling problems of the granular silica aerogel. The three test samples are differing in rib distance and degree of sealing against moisture. The investigation and documentation were carried out by following the evolution of each test specimen and taking photographs at regular time intervals. A rib distance of 200 mm seems satisfactory to avoid any settling of the material. The sealing of the shutter edges is very important as the form of granular silica aerogel used is very sensitive to the presence of free water, which makes the silica aerogel turn white and degenerate to a white powder. However, the granular silica aerogel is now available in a surface treated hydrophobic form. (au) (102 refs.)}
place = {Denmark}
year = {1993}
month = {Nov}
}