Related Questions

Fouling factor is used
A In heat exchanger design as a safety factor
B In case of Newtonian fluids
C When a liquid exchanges heat with a gas
D None of the above
Fouling factor must be included in the calculation of over all design heat transfer coefficient, when the liquid
A Containing suspended solids flows at low velocity
B Containing suspended solids flows at high velocity
C Is highly viscous
D Is of high specific gravity
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
In SI units, fouling factor is expressed in
A m2°K/W
B W/m2°K
C m2°K
D m°K/W
'Fouling factor' used in the design of a multipass shell and tube heat exchanger is a
A Non-dimensional factor
B Factor of safety
C Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient
D None of these
The value of stress concentration factor depends upon
A Material and geometry of the part
B Geometry of the part
C Material of the part
D None of these
The value of diagram factor depends upon
A Initial conditions of steam
B Back pressure
C Initial pressure of steam
D All of these
The reheat factor depends upon
A Initial pressure and superheat
B Exit pressure
C Turbine stage efficiency
D All of these
jH factor for heat transfer depends upon the __________ number.
A Biot
B Nusselt
C Reynolds
D Prandtl
When one of the fluids is highly corrosive and has fouling tendency, it should
A Preferably flow inside the tube for its easier internal cleaning
B Perferably flow outside the tube
C Flow at a very slow velocity
D Flow outside the tube, when the flow is counter-current and inside the tube when the flow is co-current

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