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Process Equipment and Plant Design

Process Equipment and Plant Design
Which of the following is the best tube material from thermal conductivity point of view alone?

Copper
Stainless steel
Aluminium
Carbon steel

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Process Equipment and Plant Design
A cylinderical pressure vessel of volume 6 πm³ has to be designed to withstand a maximum internal pressure of 10 atm. The allowable design stress of the material is 125N/mm² and corrosion allowance is 2 mm. The thickness of the vessel for a length/diameter ratio of 3 will be close to

8 mm
6 mm
10 mm
5 mm

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Process Equipment and Plant Design
The maximum liquid gradient over a tray must not exceed

0.5" -1.25"
5"
2"-3.5"
Half the tray spacing

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Process Equipment and Plant Design
Length to diameter ratio of most rotary driers is in the range of

20 to 30
4 to 10
10 to 20
1 to 2

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Process Equipment and Plant Design
Nominal size of a pipe is an indication of its __________ diameter.

Inner
Approximate
Outer
None of these

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Process Equipment and Plant Design
Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as

Δp = G0.5
Δp = G2
Δp = G
Δp = 1/G0.6

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