The principle of ceramic fiber insulation material is mainly based on its low thermal conductivity, low emissivity and the gap structure between fibers, and the insulation effect is achieved by reducing heat conduction, radiation and convection.
Detailed explanation of the principle
Reduction of heat conduction: Ceramic fiber insulation material is made of ceramic fiber with low thermal conductivity, which can effectively reduce the transfer of heat inside the object. The fiber interweaving has no clear directionality, and the heat is mainly conducted along the direction of the fiber rod, the propagation path is extended, and the thermal conductivity effect is not obvious.
Reduction of radiation: Ceramic fiber insulation material has a very low emissivity, which can reduce the transfer of radiant heat. The fiber is opaque, and heat rays cannot penetrate the fiber, which reduces the absorption and transfer of thermal radiation.
Reduction of convection: The fiber interweaving in the ceramic fiber material forms a large number of tiny air chambers, which are filled with still air. Due to the extremely low thermal conductivity of air, a natural barrier to heat transfer is formed, which greatly reduces the efficiency of convective heat transfer.
