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Chemical Heat Transfer

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

Chemical Heat Transfer /
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.

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

Chemical Heat Transfer

The rate of heat transfer through a pipe wall is given by, q = 2π k (Ti – T0)/ln (ri/r0). For cylinder of very thin wall, q can be approximated by__________________?

Chemical Heat Transfer /
The rate of heat transfer through a pipe wall is given by, q = 2π k (Ti – T0)/ln (ri/r0). For cylinder of very thin wall, q can be approximated by__________________?

A. q = [2π k (Ti + T0)/2]/ln (ri/r0)
B. q = 2π ri k (Ti – T0)/(r0/ri)
C. q = 2π k (Ti – T0)/(r0/ri)
D. q = 2π k (Ti – T0)/[(r0 + ri)/2]

The rate of heat transfer through a pipe wall is given by, q = 2π k (Ti – T0)/ln (ri/r0). For cylinder of very thin wall, q can be approximated by__________________? Read More »

Chemical Heat Transfer

If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will ________________?

Chemical Heat Transfer /
If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will ________________?

A. Increase by 1.8 times
B. Decrease by 22
C. Increase by 216
D. Remain unchanged

If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will ________________? Read More »

Chemical Heat Transfer