Question

Heat conduction is a function of material property, temperature difference and fluid the geometry of the object. a) True b) False

Answer 1

Answer:

a)True

Explanation:

According to Fourier's law,It states that Heat transfer is directly proportionate to the temperature gradient.For unidirectional conduction

    $q''\alpha\dfrac{dT}{dx}$

Where q'' is the heat flux.

When This directly proportionate is remove then one constant will on that place and that constant is called conductivity of material.

  $q''=K\dfrac{dT}{dx}$

So total heat transfer Q

      $Q=KA\dfrac{dT}{dx}$

When conductivity (K) of material is not constant

K=$K_0$(a+bT)  where a,b are constant.

So from the above expression we can say that heat transfer in material will depend on temperature difference,material property and on on geometry of object.