Convection resistance at outer surface of hollow cylinder - Heat Transfer

Q.  What is the formula for thermal resistance for convection at the outer surface of hollow cylinder?
h = convection heat transfer coefficient
l = length of hollow cylinder
r = outer radius of the cylinder

- Published on 12 Aug 15

a. Rc = 1 / h r l
b. Rc = 2 π h r l
c. Rc = 1 / 2 π h r l
d. none of the above

ANSWER: Rc = 1 / 2 π h r l

Post your comment / Share knowledge

Enter the code shown above:
(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)