Question: Consider an object cooling down by forced convection. If the lumped capacitance method can be used, then we can assume: A. The solid has an

Consider an object cooling down by forced convection. If the lumped capacitance method can be used, then we can assume:

A. The solid has an infinitely large thermal conductivity

B. The solid has a vanishingly small thermal conductivity

C. The thermal resistance within the solid is comparable with the thermal resistance of the adjacent medium

Which one is correct? A, B or C?

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