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Process Equipment and Plant Design

Process Equipment and Plant Design
In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.

2.5 times
Less than
One-fourth of
1.25-1.50 times

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Process Equipment and Plant Design
Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about __________ kcal/hr.m².°C.

2500
7500
15000
1250

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Process Equipment and Plant Design
Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.

8
1/2
4
2

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Process Equipment and Plant Design
Brass valves are usually made for pipe sizes __________ inches.

?2
>3.5
>2.5
?1

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Process Equipment and Plant Design
For annular flow of a fluid, the ratio of the equivalent diameter for pressure drop calculation to the equivalent diameter for heat transfer calculation is

D1/(d1 + d2)
(d1 + d2)/d2
D2/(d1 + d2)
(d1 + d2)/d1

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Process Equipment and Plant Design
Le/D for fully open gate valves would be

Around 7
Both B and C
Much more than that for fully open globe valves
Much less (say 2% than that for fully open globe valves)

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