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Process Equipment and Plant Design

Process Equipment and Plant Design
What is the slope of the operating line in the stripping section of a distillation column?

> 1
< 1
?

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Process Equipment and Plant Design
What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers?

Equal to tube I.D
Equal to tube O.D
6.5 mm
6.5 cms

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Process Equipment and Plant Design
Rotary driers are most economically designed for the number of heat transfer units (HTU) from

5 to 10
1.5 to 2.5
10 to 20
0.01 to 1

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Process Equipment and Plant Design
Hoop (circumferential) stress induced in a thin walled 'Horton Sphere' used for the storage of liquid ammonia under pressure is

pD/3t
pD/4t
pD/2t
pD/6t

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Process Equipment and Plant Design
Joint efficiency (J) for a seamless pipe is

1.2
1
< 0.5
0.85

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

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