Chemical Heat Transfer

Water is normally used as a coolant in the heat exchange equipments mainly because of its___________________?

Byadmin March 2, 2019August 24, 2021

Water is normally used as a coolant in the heat exchange equipments mainly because of its___________________?

A. Abundance & high heat capacity
B. Low density
C. Low viscosity
D. High fluidity

Chemical Heat Transfer

Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low___________________?

Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low___________________?

A. Hardness
B. Dissolved solids content
C. Suspended solids content
D. All A., B. and C.

Read More Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low___________________?
Chemical Heat Transfer

In case of surface condensers, a straight line is obtained on plotting 1/U vs. ____________ on an ordinary graph paper?

In case of surface condensers, a straight line is obtained on plotting 1/U vs. ____________ on an ordinary graph paper?

A. 1/V̅ -0.8
B. V̅ -0.8
C. V̅ -2
D. 1/ V̅ -2

Read More In case of surface condensers, a straight line is obtained on plotting 1/U vs. ____________ on an ordinary graph paper?
Chemical Heat Transfer

The equation, Nst = f/2, is the _____________ analogy?

The equation, Nst = f/2, is the _____________ analogy?

A. Colburn
B. Reynolds
C. Prandtl
D. None of these

Read More The equation, Nst = f/2, is the _____________ analogy?
Chemical Heat Transfer

Fouling factor for a heat exchanger is given by (where, U1 = heat transfer co-efficient of dirty surface U2 = heat transfer co-efficient of clean surface) ?

Fouling factor for a heat exchanger is given by (where, U1 = heat transfer co-efficient of dirty surface U2 = heat transfer co-efficient of clean surface) ?

A. U1 – U2
B. 1/U1 – 1/U2
C. 1/U2 – 1/U1
D. U2 – U1

Read More Fouling factor for a heat exchanger is given by (where, U1 = heat transfer co-efficient of dirty surface U2 = heat transfer co-efficient of clean surface) ?
Chemical Heat Transfer

Baffle spacing ____________________?

Baffle spacing ____________________?

A. Is not the same as baffle pitch
B. Should be less than one fifth the diameter of the shell
C. Should be less than the inside diameter of the shell
D. None of these

Read More Baffle spacing ____________________?
Chemical Heat Transfer

Electro-magnetic spectrum range, which is important for radiation varies from _____________ microns?

Electro-magnetic spectrum range, which is important for radiation varies from _____________ microns?

A. 1 to 100
B. 0.5 to 50
C. 10 to 100
D. 100 to 1000

Read More Electro-magnetic spectrum range, which is important for radiation varies from _____________ microns?

Similar Posts