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Process Equipment and Plant Design

Process Equipment and Plant Design
Cooling water fouling factors vary in the range of 0.001 to 0.003

(kcal/hr.m² .°C)⁻¹
(kcal/hr. m. °C)⁻¹
(W/m².°K)⁻¹
(BTU/hr.ft² . °F)⁻¹

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

1
0.85
1.2
< 0.5

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Process Equipment and Plant Design
Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always

More than geometric mean value
Both B & C
More than arithmetic mean value
Less than arithmetic mean value

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Process Equipment and Plant Design
The slope of the feed line in distillation opeartion is given by (where, q = fraction of the feed stream that is liquid.)

-q/(q-1)
None of these
-q
-q/(1-q)

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Process Equipment and Plant Design
In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube)

Πd/4P²
4P²/πd
(P² - πd²/4)/πd
4(P² - πd²/4)/πd

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Process Equipment and Plant Design
In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon

Clearance
Pitch
Baffle spacing
None of these

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