Chemical Heat Transfer

Natural convection is characterised by__________________?

Byadmin March 2, 2019August 24, 2021

Natural convection is characterised by__________________?

A. Grashoff number
B. Peclet number
C. Reynolds number
D. Prandtl number

Chemical Heat Transfer

Reynold’s analogy states that_________________?

Reynold’s analogy states that_________________?

A. Nst α f
B. Nst α NRe
C. NNu α f
D. NRe α f

Read More Reynold’s analogy states that_________________?
Chemical Heat Transfer

Use of transverse baffles in a shell and tube heat exchanger is done to increase the___________________?

Use of transverse baffles in a shell and tube heat exchanger is done to increase the___________________?

A. Rate of heat transfer
B. Flow velocity
C. Turbulence of shell side fluid
D. All A., B. and C.

Read More Use of transverse baffles in a shell and tube heat exchanger is done to increase the___________________?
Chemical Heat Transfer

For a given ambient air temperature with increase in the thickness of insulation of a hot cylindrical pipe, the rate of heat loss from the surface would ?

For a given ambient air temperature with increase in the thickness of insulation of a hot cylindrical pipe, the rate of heat loss from the surface would ?

A. Decrease
B. Increase
C. First decrease and then increase
D. First increase and then decrease

Read More For a given ambient air temperature with increase in the thickness of insulation of a hot cylindrical pipe, the rate of heat loss from the surface would ?
Chemical Heat Transfer

Heat flux through several resistances in series in analogous to the current flowing through several_____________________?

Heat flux through several resistances in series in analogous to the current flowing through several_____________________?

A. Resistances in parallel
B. Capacitors in series
C. Resistances in series
D. None of these

Read More Heat flux through several resistances in series in analogous to the current flowing through several_____________________?
Chemical Heat Transfer

For _______________ Prandtl number values, the heat conduction will be negligible in the buffer zone?

For _______________ Prandtl number values, the heat conduction will be negligible in the buffer zone?

A. Extremely low
B. Low
C. High
D. No

Read More For _______________ Prandtl number values, the heat conduction will be negligible in the buffer zone?
Chemical Heat Transfer

View factor is important in heat transfer by_____________________?

View factor is important in heat transfer by_____________________?

A. Steady state conduction
B. Natural convection
C. Forced convection
D. Radiation

Read More View factor is important in heat transfer by_____________________?

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