7709Chemical EngineeringMedium
A fluid is flowing inside the inner tube of a double pipe heat exchanger with diameter ‘d’. For a fixed mass flow rate, the tube side heat transfer co-efficient for turbulent flow conditions is proportional to________?
Ad0.8
Bd-0.2
Cd-1.8
Dd-1
Correct answer
B. d-0.2
Explanation
The correct answer is d-0.2.