Process Equipment And Plant Design - Study Mode
[#66] Friction factor for turbulent flow in a new pipe is given by
Correct Answer
(B) $${ ext{f}} = frac{{0.04}}{{{{ ext{N}}_{{ ext{Re}}}}^{0.16}}}$$
[#67] Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger?
Correct Answer
(B) 25% cut segmental baffle
[#68] The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.
Correct Answer
(D) 25
[#69] In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D 1 and D 2 are I.D. of inner and outer pipes)
Correct Answer
(A) $$frac{{{ ext{D}}_2^2 - { ext{D}}_1^2}}{{{ ext{D}}_1^2}}$$
[#70] The ratio of down take area to cross-sectional area of the tube, for calendria type evaporator ranges from
Correct Answer
(A) 0.5 to 1