Chapter 2 Heat Conduction EquationVariable Thermal Conductivity 2-94C During steady one-dimensional heat conduction in a plane wall, long cylinder, and sphere with constant thermal conductivity and no heat generation, the temperature in only the plane wallwill vary linearly. 2-95C The thermal conductivity of a medium, in general, varies with temperature. 2-96CDuring steady one-dimensional heat conduction in a plane wall in which the thermal conductivity varies linearly, the error involved in heat transfer calculation by assuming constant thermal conductivity at the average temperature is (a) none. 2-97C No, the temperature variation in a plain wall will not be linear when the thermal conductivity varies with temperature. 2-98C Yes, when the thermal conductivity of a medium varies linearly with temperature, the average thermal conductivity is always equivalent to the conductivity value at the average temperature.
This is the end of the preview.
access the rest of the document.