Chemical Heat Transfer

For hot feed, forward feeding as compared to backward feeding results in ______________ economy?

Byadmin March 2, 2019August 24, 2021

For hot feed, forward feeding as compared to backward feeding results in ______________ economy?

A. Increased
B. Decreased
C. No effect on
D. None of these

Chemical Heat Transfer

Which characteristic of a fluid is not important in deciding its route in a shell and tube heat exchanger ?

Which characteristic of a fluid is not important in deciding its route in a shell and tube heat exchanger ?

A. Corrosiveness
B. Fouling characteristic
C. Viscosity
D. None of these

Read More Which characteristic of a fluid is not important in deciding its route in a shell and tube heat exchanger ?
Chemical Heat Transfer

Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is__________________?

Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is__________________?

A. 0.4
B. 0.5
C. 0.6
D. 0.7

Read More Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is__________________?
Chemical Heat Transfer

Boiling point elevation of a solution of NaOH _____________________?

Boiling point elevation of a solution of NaOH _____________________?

A. Increases rapidly with temperature rise
B. Is almost independent of temperature
C. Is almost independent of pressure
D. Both B. and C

Read More Boiling point elevation of a solution of NaOH _____________________?
Chemical Heat Transfer

The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface) ?

The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface) ?

A. K/h0
B. 2K/h0
C. h0/K
D. h0/2K

Read More The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface) ?
Chemical Heat Transfer

The Fourier number (defined as a.t/L2) is used in the analysis of problem involving heat transfer by_______________?

The Fourier number (defined as a.t/L2) is used in the analysis of problem involving heat transfer by_______________?

A. Forced convection
B. Natural convection
C. Transient conduction
D. Steady state conduction

Read More The Fourier number (defined as a.t/L2) is used in the analysis of problem involving heat transfer by_______________?
Chemical Heat Transfer

A BTU/hr.ft.2 °F is equal to_________________?

A BTU/hr.ft.2 °F is equal to_________________?

A. 1 kcal/hr. m2°C
B. 4.88 kcal/hr. m.2°C
C. 1 kcal/hr. m2.°K
D. None of these

Read More A BTU/hr.ft.2 °F is equal to_________________?

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