Fouling factor for a heat exchanger is given by (where, U1 = heat tran – McqOptions

MCQOPTIONS

1.	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
Answer» C. 1/U2 – 1/U1

Discussion

No Comment Found

Related MCQs

While the total emissivity of a perfect black body is unity, the same for a real body is__________________?
With increase in porosity, the thermal conductivity of a solid substance__________________?
With increase in temperature, the thermal conductivity of fresh lubricating oil ___________________?
With increase in temperature, the thermal conductivity of most liquids_________________?
With increase in temperature, the thermal conductivity of a gas ___________________?
With increase in temperature, the thermal conductivity of non-metallic amorphous solids_________________?
With increase in temperature, the total emissivity of conductors____________________?
With increase in temperature, the thermal conductivity of steel___________________?
With increase in the distance between the heat source and the object receiving the heat, the radiation heat transfer ?
With the increase of temperature, the Col-burn jH factor_____________________?