ShareSummary
The authors systematically investigate thermal transport in opacified monolithic silica aerogels by changing their density and the concentration of infrared opacifier. The goal is to minimize the thermal conductivity of these highly porous inorganic materials. The lowest achieved thermal conductivities at 300 K are about 0.013 W/m.K for non-evacuated specimens, which have to be compared with values of about 0.020-0.025 W/m.K for CFC-blown insulating polyurethane foams and with 0.035 W/m.K for the best fiber insulations. The derived variations with aerogel density are given.
Details
- Original title: Optimization of monolithic silica aerogel insulants.
- Record ID : 1993-1328
- Languages: English
- Source: International Journal of Heat and Mass Transfer - vol. 35 - n. 9
- Publication date: 1992/09
Links
See other articles in this issue (3)
See the source
Indexing
- Themes: Insulants
- Keywords: Thermal conductivity; Insulant; Silica gel; Polyurethane; Porous medium
-
Geometric structure and thermal conductivity of...
- Author(s) : ZENG S. Q., HUNT A., GREIF R.
- Date : 1995/11
- Languages : English
- Source: J. Heat Transf. - vol. 117 - n. 4
View record
-
THERMAL CONDUCTIVITY OF A MICROPOROUS PARTICULA...
- Author(s) : BJURSTROM H., KARAWACKI E., CARLSSON B.
- Date : 1984
- Languages : English
- Source: International Journal of Heat and Mass Transfer - vol. 27 - n. 11
View record
-
Silica aerogel films prepared at ambient pressu...
- Author(s) : PRAKASH S. S., BRINKER C. J., HURD A. J., RAO S. M.
- Date : 1995/04/30
- Languages : English
- Source: Nature - vol. 374 - n. 6521
View record
-
HEAT TRANSFER PROPERTIES OF FLAT-PANEL EVACUATE...
- Author(s) : YONENO H., YAMAMOTO R.
- Date : 1984
- Languages : Japanese
- Source: Trans. JAR - vol. 1 - n. 1
View record
-
THERMAL CONDUCTIVITY OF LIQUID HYDROGEN FILLED ...
- Author(s) : DANEY D. E., MAPOLES E.
- Date : 1987
- Languages : English
- Source: Cryogenics - vol. 27 - n. 8
View record