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Process Equipment and Plant Design

Process Equipment and Plant Design
Cylindrical pressure vessels in horizontal condition is generally supported on a __________ support.

Skirt
Lug
Saddle
Guy wire

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Process Equipment and Plant Design
Slope of countercurrent flow rotary drier is in the range of __________ meter/metre.

0 to 1.5
0 to 0.08
0 to 2.2
0 to 0.8

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Process Equipment and Plant Design
The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

pd/3t
pd/4t
pd/t
pd/2t

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Process Equipment and Plant Design
The equivalent diameter for fluid flow through a channel of constant non-circular cross section of area 'A' is given by (where, P = perimeter of the channel in contact with the fluid)

4 A/P
4 P/A
A/P
√A

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

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Process Equipment and Plant Design
The wall thickness for a large high pressure pipeline is determined by the consideration of the

Forces exerted by static and dynamic action at bends
Circumferential pipewall tension
Axial tensile stress in the pipe
Temperature stresses

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