Engineering
A concise route from microporous insulation principles to a preliminary material direction for your thermal design.
01
How it works
A fine-pore matrix acts on solid conduction, gas movement and thermal radiation together, delivering high thermal resistance in a slim insulation layer.
Solid conduction
The highly porous silica network has very small particle contact points. Heat must follow a long, tortuous path through the solid phase, reducing conductive heat flow.
Small contacts. Long heat path.Gas-phase heat transfer
The silica network forms pores smaller than the mean free path of air molecules. Molecules repeatedly strike the pore walls instead of travelling freely, reducing gas conduction and suppressing convection.
Fine pores. Restricted molecular travel.Thermal radiation
Metal-oxide opacifiers dispersed through the silica matrix absorb and reflect infrared energy, limiting radiative heat transfer at elevated temperatures.
Infrared absorption and reflection.
Integrated core matrix
Verified thermal trend
02
Thermal Calculation
Explore insulation thickness, heat loss and surface temperature with Siltherm. Share your application requirements to access calculation tools and product-selection support from our engineering team.
| Geometry | Flat wall |
|---|---|
| Hot-face temperature | 500 °C |
| Ambient temperature | 25 °C |
| Insulation thickness | 40 mm |
| Surface emissivity | 0.80 |
| Heat-transfer coefficient | 8 W/(m²·K) |
03
Discuss your application
Share the operating temperature, available space, equipment type and the result you need. A Siltherm specialist can then narrow the material and format options with you.
