The deduction of cooling rate from a simple heat balance can

the-deduction-of-cooling-rate-from-a-simple-heat-balance-can

The deduction of cooling rate from a simple heat balance can only be possible when the process is isothermal and the specific heats of the liquid and the solid are same.

A. True

B. False

I had been asked this question by my school teacher while I was bunking the class.

I’d like to ask this question from Rate of Solidification topic in division Cooling and Solidification of Casting-Forming-Welding I

The correct choice is A. True

Easiest explanation: In the solidification process, extraction of heat can be achieved by applying a suitable cooling to the molten metal in order to create a heat flux. The cooling rate can be deduced from a simple heat balance only if the process is isothermal (low cooling rate) and the specific heats of the liquid and the solid are the same.