Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the________________?

Related Mcqs:

The non-dimensional temperature gradient in a liquid at the wall of a pipe is the ____________________?

A. Heat flux B. Nusselt number C. Prandtl number D. Schmidt number...

Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter)?

A. 0.2 D B. 0.5 D C. 0.66 D D. 0.80 D...

Radiator of an automobile engine is a ______________ type of heat exchanger?

A. Co-current B. Cross-current C. Counter-current D. Direct contact...

The equation, (NSt × N2/3 Pr) = f/2, is the ____________ analogy ?

A. Colburn B. Reynolds C. Prandtl D. None of these...

Choose the correct equation ?

A. Nu = (Re) (Pr) (Gz) B. Nu = (Re) (Pr) (St) C. Nu = (Re) (Pr) D. Nu = (Pr) (St)...