In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D1 and D2 are I.D. of inner and outer pipes)
A. $$\frac{{{\text{D}}_2^2 - {\text{D}}_1^2}}{{{\text{D}}_1^2}}$$
B. D2 - D1
C. $$\frac{{{\text{D}}_2^2 - {\text{D}}_1^2}}{{{\text{D}}_2^2}}$$
D. None of these
Answer: Option A
Related Questions on Process Equipment and Plant Design
Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.
A. $$\frac{1}{8}$$ and $$\frac{1}{{64}}$$
B. $$\frac{1}{{64}}$$ and $$\frac{1}{8}$$
C. $$\frac{1}{2}$$ and 8
D. $$\frac{1}{2}$$ and 5
A. Less than
B. 1.25-1.50 times
C. 2.5 times
D. One-fourth of
Value of Peclet number = 0, is the representative of
A. Laminar flow
B. Complete back mixing
C. Plug flow
D. Eddy diffusivity = 0
Join The Discussion