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Process Equipment and Plant Design

Process Equipment and Plant Design
Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about __________ kcal/hr.m².°C.

2500
15000
1250
7500

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Process Equipment and Plant Design
Tube wall thickness depends on the cor-rosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than __________ mm outside diameter is generally not recommended for fouling fluids.

28
19
16
38

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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

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

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Process Equipment and Plant Design
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Equal to
1.5 times
Three fourth
Half

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Process Equipment and Plant Design
The most common standard size of bubble caps used in industrial operation is

4" dia cap with 8" dia riser
6" dia cap with 4" dia riser
1" dia cap with 0.5" dia riser
8" dia cap with 1" dia riser

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Process Equipment and Plant Design
Cylindrical storage tanks used for the storage of volatile liquids (e.g., naphtha) have __________ roofs.

Flat
Fixed
Floating
Conical

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