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 ?

Byadmin March 2, 2019August 24, 2021

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

Chemical Heat Transfer

The rate of heat transfer from a vertical plate by natural convection depends upon the temperature differences (ΔT) between wall and outside bulk. The proportionality is given as______________?

The rate of heat transfer from a vertical plate by natural convection depends upon the temperature differences (ΔT) between wall and outside bulk. The proportionality is given as______________?

A. (ΔT)1/4
B. (ΔT)1/2
C. (ΔT)5/4
D. (ΔT)3/4

Read More The rate of heat transfer from a vertical plate by natural convection depends upon the temperature differences (ΔT) between wall and outside bulk. The proportionality is given as______________?
Chemical Heat Transfer

In a shell and tube heat exchanger, the tube side heat transfer co-efficient just at the entrance of the tube is_________________?

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

Read More In a shell and tube heat exchanger, the tube side heat transfer co-efficient just at the entrance of the tube is_________________?
Chemical Heat Transfer

Kg of liquid evaporated per hour in an evaporator is defined as its_________________?

Kg of liquid evaporated per hour in an evaporator is defined as its_________________?

A. Capacity
B. Economy
C. Steam load
D. None of these

Read More Kg of liquid evaporated per hour in an evaporator is defined as its_________________?
Chemical Heat Transfer

In an extended surface heat exchanger, fluid having lower co-efficient________________?

In an extended surface heat exchanger, fluid having lower co-efficient________________?

A. Flows through the tube
B. Flows outside the tubes
C. Can flow either inside or outside the tubes
D. Should not be used as it gives very high pressure drop

Read More In an extended surface heat exchanger, fluid having lower co-efficient________________?
Chemical Heat Transfer

The unit of heat transfer co-efficient is_________________?

The unit of heat transfer co-efficient is_________________?

A. BTU/hr. ft2°F
B. BTU/hr. °F. ft
C. BTU/hr. °F
D. BTU/hr. ft

Read More The unit of heat transfer co-efficient is_________________?
Chemical Heat Transfer

Fouling factor_____________________?

Fouling factor_____________________?

A. Is a dimensionless quantity
B. Does not provide a safety factor for design
C. Accounts for additional resistances to heat flow
D. None of these

Read More Fouling factor_____________________?

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