Related Questions

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
A concentric double pipe heat exchanger as compared to the shell and tube heat exchanger for the same heat load requires
A Less heating surface
B More space
C Lower maintenance cost
D None of these
In a shell and tube heat exchanger, the tube side heat transfer co-efficient just at the entrance of the tube is
A Infinity
B Zero
C Same as average heat transfer co-efficient for tube side
D None of these
For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it
A Decreases the pressure drop
B Decreases the outlet temperature of cooling medium
C Increases the overall heat transfer coefficient
D None of these
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
In a multipass shell and tube heat exchanger, the problem of differential expansion between the shell and tube passes is taken care of by using a
A U-bend
B Floating head tube sheet
C Either A or B
D Neither A nor B
In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used
A In low range of temperature differences
B In high range of temperature differences
C Because of its low cost
D To prevent corrosion of the tube bundles
In a multipass shell and tube heat exchanger, tube side return pressure loss is equal to __________ the velocity head.
A Twice
B Four times
C Square root of
D Square of
In a shell and tube heat exchanger, tube side __________ of the mass velocity.
A Heat transfer co-efficient is proportional to 0.8th power
B Pressure drop is proportional to the square
C Both A & B
D Neither A nor B
If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.
A Increase by 1.8
B Decrease by 22
C Increase by 21.6
D None of these

Next steps