In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be_________________?

A. Less than that for fluid flow

B. Same as that for fluid flow

C. More than that for fluid flow

D. D2 D1 (D1 and D2 are I.D. of inner and outer pipes respectively)

Found an error? Read our corrections policy and report it in the comments below.

Be the first to comment if anything wrong with this mcq
Your comment successfully submitted!
It will automatically posted after review and approval by our staff member.