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

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

0.6

0.4

0.7

0.5

0.6

0.4

0.7

0.5

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Heat Transfer
A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides

Higher economy

Lower economy

Lower capacity

Both A & B

Higher economy

Lower economy

Lower capacity

Both A & B

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Heat Transfer
A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because

Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect

Boiling point elevation in a single effect system is much higher than that in any effect in a multieffect system

Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect system

Total heat transfer area of all the effects is -less than that in a single effect evaporator system

Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect

Boiling point elevation in a single effect system is much higher than that in any effect in a multieffect system

Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect system

Total heat transfer area of all the effects is -less than that in a single effect evaporator system

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Heat Transfer
In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is equality of

Chemical potentials

Activity co-efficients

Concentrations

Mass transfer co-efficients

Chemical potentials

Activity co-efficients

Concentrations

Mass transfer co-efficients

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Heat Transfer
Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is

< 1

0.1

L

>1

< 1

0.1

L

>1

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Heat Transfer
All analogy equations connecting friction factor and heat transfer co-efficient apply only to

Wall or skin friction

Both A and B

Form friction

Turbulent flow

Wall or skin friction

Both A and B

Form friction

Turbulent flow

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Heat Transfer

Heat Transfer A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides

Heat Transfer A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because

Heat Transfer In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is equality of

Heat Transfer Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is

Heat Transfer All analogy equations connecting friction factor and heat transfer co-efficient apply only to

Heat Transfer
A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides

Heat Transfer
A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because

Heat Transfer
In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is equality of

Heat Transfer
Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is

Heat Transfer
All analogy equations connecting friction factor and heat transfer co-efficient apply only to