KERALA UNIVERSITY Class 6 heat and mass transfer Question Paper 2020

Practice authentic previous year questions for better exam preparation.

Sample Questions

What is the significance of Nusselt and Rayleigh's number?
Define Prandtl number. What is its significance?
(b) A counter-flow heat exchanger is employed to cool $0.55 \mathrm{~kg} / \mathrm{s}$ ( $C_{p}=2.45 \mathrm{kJ} / \mathrm{kg}^{\circ} \mathrm{C}$ ) of oil from $115^{\circ} \mathrm{C}$ to $40^{\circ} \mathrm{C}$ by the use of water. The inlet and ut...
A counterflow double pipe heat exchanger using superheated steam is used to heat water at the rate of $10000 \mathrm{~kg} / \mathrm{h}$. The steam enters the heat exchanger at $180^{\circ} \mathrm{C}$ and leaves at $130^{\circ} \mathrm{C}$. The inlet...
(a) Derive an expression for effectiveness by NTU method for parallel flow heat exchanger.