【Daily Question】Theoretical Foundation 2019.12.18
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Fill-in-the-blank question: In a thermal conduction wall composed of multiple layers of equal-thickness flat walls, the smaller the thermal conductivity of the material used, the greater the thermal resistance of that wall, and the temperature difference across it ( ). Answer: greater. Hint: An additional reward will be given to those who can explain the solution process; the answer can be found in the response!
This post was last edited by Ye Liu on 2019-12-18 at 10:22; it becomes larger. Heat flux = constant coefficient * heat transfer driving force / thermal resistance. The heat transfer driving force is the temperature difference across the wall surface, while thermal resistance is directly proportional to the reciprocal of the wall’s thermal conductivity; the lower the thermal conductivity, the greater the thermal resistance. When the heat flux remains constant, a greater heat transfer driving force is required, which means a larger temperature difference across the wall surface