Question

“All of the coolant is at a uniform temperature, Tc”, is this statement correct according to the assumptions for the Unsteady-state energy balance?

(a) True

(b) False

This question was posed to me in an interview.

My question is taken from Solving Unsteady in division Unsteady – State Material and Energy Balances of Bioprocess Engineering

Answer 1

(b) False

In unsteady-state energy balance assumptions, it is generally not assumed that all of the coolant is at a uniform temperature. There could be variations in temperature within the coolant as it absorbs heat from the system. The assumption of uniform temperature (Tc) would be too simplistic and not typically valid in most unsteady-state energy balance scenarios.