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Chemical Engineering - Process Equipment and Plant Design

Exercise : Process Equipment and Plant Design - Section 4
16.
In case of design of a shell and tube heat exchanger,
minimum cleaning lane of 6.5 mm is provided, when tubes are on a square pitch.
minimum tube sheet thickness (in which tubes are fixed) is equal to the O.D. of the tube upto 15 mm tube diameter; and for > 15 mm tube diameter, tube sheet thickness is smaller than tube diameter.
O.D. of the tube is 6 to 40 mm while the tube lengths used are 0.5, 2.5, 3.0, 4.0, 5.0, 6 metres.
all (a), (b) & (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
In a cylinderical vessel subjected to internal pressure, the longitudinal stress σL and the circumferential stress, σn are related by
σh = 2 σL
σh = σL
σh = σL/2
no relation exists
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Nominal size of a pipe is an indication of its __________ diameter.
inner
outer
approximate
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Excessive liquid gradient on a tray may result in the
maldistribution of gas.
back trapping.
gas blowing beneath cap skit.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from
2 to 3
3 to 5
4 to 8
6 to 12
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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