Related Questions

In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always
A [

A.

B. > 1

B 1
C ∞
In a shell and tube heat exchanger, putting a longitudinal baffle across the shell, forces the shell side fluid to pass __________ through the heat exchanger.
A Once
B Twice
C Thrice
D Four times
For a multipass shell and tube heat exchanger, the LMTD correction factor is always
A 1
B > 1
C Between 1 & 2
LMTD in case of counter flow heat exchanger as compared to parallel flow heat exchanger is
A Higher
B Lower
C Same
D Depends on the area of heat exchanger
LMTD correction factor is used in heat exchanger design for
A Double pipe heat exchanger
B Multipass shell and tube heat exchanger
C Fouling fluids
D Counter flow of hot and cold fluids
If all the conditions and dimensions are same, then the ratio of velocity through the tubes of a double pass heat exchanger to that through the single pass heat exchanger is
A 1
B 2
C $$\frac{1}{2}$$
D 4
Correction is applied to LMTD for __________ flow.
A Parallel
B Counter
C Cross
D None of these
In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon
A Baffle spacing
B Clearance
C Pitch
D None of these
In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of __________ mm.
A 3-5
B 5-11
C 8-15
D 12-18
Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is
A Finned tube heat exchanger with air inside and steam outside
B Finned tube heat exchanger with air outside and steam inside
C Shell and tube heat exchanger with air inside tubes and steam on shell side
D Shell and tube heat exchanger with air on shell side and steam inside tubes

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