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What is Perlite? |
Main Index > Markets > Industrial Applications
> "Super"
Insulating Perlite > Insulation Specifications
"Super"
Insulating Perlite for Evacuated Cryogenic Service
| EVACUATED PERLITE CRYOGENIC
INSULATION SPECIFICATIONS |
| Density: |
8 to 9.5 lb./ft3 (128 to 152 kg/m3)
|
| Sieve Analysis (mesh is U.S. Standard) |
Max. 5% +30 mesh (0.6 mm)* |
| Thermal Conductivity** |
0.0047 Btu.in/h.ft2. F (0.0007 W/m.K) |
| * Tests
have shown that the finer the material the better its preformance (Within the specified
range). ** Thermal conductivity depends on temperature, density, and sieve analysis
of expanded perlite and the interstitial pressure. + At -160 F (-107 C), 8.7 lb/ft3
(139 kg/m3), 0.01u (1.33 mPa) |
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