Film coefficient is defined as the ratio of

A. Thermal conductivity to the equivalent thickness of the film of fluid

B. Temperature drop through the films of fluids to the thickness of film of fluids

C. Thickness of film of fluid to the thermal conductivity

D. Thickness of film of fluid to the temperature drop through the films of fluids

Answer: Option A

Solution(By Examveda Team)

Film coefficient is defined as the ratio of Thermal conductivity to the equivalent thickness of the film of fluid The heat transferred by convection per unit area per degree temperature difference between the surface and the fluid.