True or False (a) Heat transfer by conduction can occur in a vacuum (b) The effe

Question

True or False (a) Heat transfer by conduction can occur in a vacuum (b) The effectiveness of a fin increases as its thermal conductivity increases. (c) Consider one-dimensional, steady-state conduction in a plane wall with heat generation. For T-T this case, the heat flux through the wall is given by "2 L/k T. T. 7>0 (d) In transient conduction analysis, the lumped capacitance method is applicable when the thermal resistance by conduction is much smaller than the thermal resistance by convection.

Explanation / Answer

A) False. conduction can't occur through the vacuum

B) True.

C) False. Heat generation term is not included in the given equation.

D) True. As biot number should be less than 0.1 to follow lumped heat analysis

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