Chemical Heat Transfer

Crystal size in a continuous crystalliser depends upon the___________________?

Byadmin March 3, 2019August 24, 2021

Crystal size in a continuous crystalliser depends upon the___________________?

A. Rate of heat transfer
B. Degree of turbulence
C. Degree of super-saturation
D. All A., B. and C

Chemical Heat Transfer

Sensible heat absorbed by 1 lb of water when it is heated from 32 to 212°F may be around ______________ BTU?

Sensible heat absorbed by 1 lb of water when it is heated from 32 to 212°F may be around ______________ BTU?

A. 180
B. 970
C. 3.97
D. Data insufficient, can’t be predicted

Read More Sensible heat absorbed by 1 lb of water when it is heated from 32 to 212°F may be around ______________ BTU?
Chemical Heat Transfer

The heat transfer co-efficient in film type condensation is _______________ that for dropwise condensation?

The heat transfer co-efficient in film type condensation is _______________ that for dropwise condensation?

A. Greater than
B. Lower than
C. Is same as
D. Half

Read More The heat transfer co-efficient in film type condensation is _______________ that for dropwise condensation?
Chemical Heat Transfer

Viscous & heat sensitive liquids are concentrated in _____________ evaporators?

Viscous & heat sensitive liquids are concentrated in _____________ evaporators?

A. Open pan
B. Long tube
C. Agitated film
D. None of these

Read More Viscous & heat sensitive liquids are concentrated in _____________ evaporators?
Chemical Heat Transfer

A multiple effect evaporator as compared to a single effect evaporator of the same capacity has _________________?

A multiple effect evaporator as compared to a single effect evaporator of the same capacity has _________________?

A. Lower heat transfer area
B. Lower steam economy
C. Higher steam economy
D. Higher solute concentration in the product

Read More A multiple effect evaporator as compared to a single effect evaporator of the same capacity has _________________?
Chemical Heat Transfer

_____________ heat exchanger is used for chilling oil to be dewaxed?

_____________ heat exchanger is used for chilling oil to be dewaxed?

A. U-tube
B. Double pipe
C. Fixed tube
D. Floating head

Read More _____________ heat exchanger is used for chilling oil to be dewaxed?
Chemical Heat Transfer

Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the _____________ zone?

Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the _____________ zone?

A. Laminar
B. Transition
C. Both A & B
D. Highly turbulent

Read More Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the _____________ zone?

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