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Process Equipment and Plant Design

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

< 0.5
1
1.2
0.85

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Process Equipment and Plant Design
Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as 'd' will be

D
√(2πd)
√(2d)
√d

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Process Equipment and Plant Design
Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation?

None of these
Ponchon-Savarit method
Sorel-Lewis method
McCabe-Thiele's method

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Process Equipment and Plant Design
In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

(4p² - πd²/4)/πd
4(0.86p² - πd²/4)/πd
4(0.86p² - πd²)/πd
(p² - πd²/4)/πd

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Process Equipment and Plant Design
__________ is the determining factor for the number of bubble caps to be used per tray.

Vapor load
Liquid load
Permissible slot velocity
Tray diameter

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Process Equipment and Plant Design
Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from

7.5-10.0
1.5-2.5
44119
3.5-5.5

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