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Process Equipment and Plant Design

Process Equipment and Plant Design
A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of

2
None of these
20.8
20.2

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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

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

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Process Equipment and Plant Design
Le/D for fully open globe value may be around

10
75
300
25

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Process Equipment and Plant Design
The raio, (properller agitator dia/tank dia) is normally taken as

0.60-0.90
0.15-030
0.75-0.85
0.5-0.65

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Process Equipment and Plant Design
Lap joints are preferred for plates having thickness __________ mm.

> 3
43961
> 5
< 12.5

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Process Equipment and Plant Design
Movement of pipeline caused by thermal expansion is taken care by providing

Change in the shape of pipeline
All of these
Expansion joint
Changes in its direction

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