Data-driven Structural Optimization Design and Evaluation of Medium-low Temperature Thermal Insulation Ceramic Tube
With the emergence of portable electronic products with electric heating in medium temperature conditions,the study of low-cost,high-efficiency thermal insulation tubes(TITs)have become a hot area.However,it is still a challenge to develop the TITs with fast internal temperature increase but low the external temperature fluctuation.This study aimed to develop a data-driven TIT design to fabricate structurally tailorable TITs by additive manufacturing,and then systematically investigated the physicochemical,mechanical,thermal insulation properties of a variety of inorganic silicate and phosphate composite ceramics via low-melting point glass-assisted sintering.The results indicated that the thermal insulation property can be improved by controlling the annular macropore sizes(400-1 200 μm)in the tube wall,increasing the thicken of the tube wall(1.2 mm×2 mm)in the heat source area,endowing microporous structures(～9%),and controlling the sintering temperature(700-750℃).The outer-wall temperature of ceramic TITs could be significantly reduced,and the thermal insulation efficacy was better than that of the stainless steel vacuum tubes.These findings demonstrate that the low-cost ceramic composite tubes have a promising application in the field of medium-temperature thermal insulation.
Data-drivingPorous ceramic tubesMedium temperature thermal insulationThree-dimensional printing
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