The main heat transfer medium of the ceramic fiber module is gas, and the porosity of the ceramic fiber reaches more than 90%. The gas composition in the pores directly affects the thermal conductivity of the ceramic fiber. The heat transfer of ceramic fiber is a logarithmic curve, and the thermal conductivity value rises faster when the temperature is higher than 700 degrees.
The steady-state heat transfer of ceramic fiber lining is mainly based on the heat insulation of the furnace wall or heat insulation. The thermal conductivity of refractory fiber is small, and the heat resistance through such a furnace lining is relatively large, and the heat dissipation loss can be significantly reduced. The non-steady state heat transfer of refractory fiber lining is mainly based on reducing the heat storage of the lining. The intermittent heating furnace frequently raises and lowers the temperature, most of the time in the heating furnace wall. Due to the low heat storage of the ceramic fiber lining, the heating and cooling time of the furnace is greatly shortened, and a large part of the heat is saved.
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