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Process Equipment and Plant Design

Process Equipment and Plant Design
In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

1000
3000
10000
5000

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Process Equipment and Plant Design
The distance between the centre of a rivet hole to the nearest edge of the plate is called

Margin
None of these
Back pitch
Pitch

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Process Equipment and Plant Design
The ratio of lateral strain to linear strain is termed as the

Poisson's ratio
Bulk modulus
Modulus of elasticity
Shear modulus

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Process Equipment and Plant Design
Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to

5 cms
25 cms
40% of the I.D. of the shell
I.D. of the shell

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Process Equipment and Plant Design
For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by

Di, opt = 3 Q0.36 ρ0.18
Di, opt = 3 Q0.36 . ρ1.86 μ0.08
Di, opt = 3.9 Q0.45 . ρ0.23
Di, opt = 7.6 Q0.36 . ρ0.9

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Process Equipment and Plant Design
In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.

2.7 to 3
1.1 to 1.5
2.2 to 2.6
1.6 to 2

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