In a distillation operation, what is the effect of the temperature of the reflux stream (given below) on the condenser and reboiler loads? Reflux conditions:(i) Reflux stream is completely liquid and is at its bubble point.(ii) Reflux stream is below its bubble point.

Mass Transfer
In a distillation operation, what is the effect of the temperature of the reflux stream (given below) on the condenser and reboiler loads? Reflux conditions:(i) Reflux stream is completely liquid and is at its bubble point.(ii) Reflux stream is below its bubble point.

Both condensor and reboiler loads are higher in case (ii) as compared to case (i)

Condenser and reboiler loads are the same in both the cases

Condenser load is the same in both the cases but reboiler load is higher in case (ii)

Reboiler load is the same in both the cases but condenser load is higher in case (ii)

Both condensor and reboiler loads are higher in case (ii) as compared to case (i)

Condenser and reboiler loads are the same in both the cases

Condenser load is the same in both the cases but reboiler load is higher in case (ii)

Reboiler load is the same in both the cases but condenser load is higher in case (ii)

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Mass Transfer
In a binary system, separation is very efficient, when the relative volatility is

0.5

1

> 1

< 1

0.5

1

> 1

< 1

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Mass Transfer
With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

Increases

Decreases

Increases linearly

Remains same

Increases

Decreases

Increases linearly

Remains same

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Mass Transfer
The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around

600

0.24

1

3.97

600

0.24

1

3.97

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Mass Transfer
The expression, y(1 - x)/x(1 - y) is for

Murphree efficiency

Selectivity

Relative volatility

Absorption factor

Murphree efficiency

Selectivity

Relative volatility

Absorption factor

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Mass Transfer
The binary diffusivity in gases at atmospheric conditions is about

10-3 sec/cm

10-9 cm/sec

10-4 cm²/seC₂

10-1 cm²/sec

10-3 sec/cm

10-9 cm/sec

10-4 cm²/seC₂

10-1 cm²/sec

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Mass Transfer

Mass Transfer In a distillation operation, what is the effect of the temperature of the reflux stream (given below) on the condenser and reboiler loads? Reflux conditions:(i) Reflux stream is completely liquid and is at its bubble point.(ii) Reflux stream is below its bubble point.

Mass Transfer In a binary system, separation is very efficient, when the relative volatility is

Mass Transfer With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

Mass Transfer The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around

Mass Transfer The expression, y(1 - x)/x(1 - y) is for

Mass Transfer The binary diffusivity in gases at atmospheric conditions is about

Mass Transfer
In a distillation operation, what is the effect of the temperature of the reflux stream (given below) on the condenser and reboiler loads? Reflux conditions:(i) Reflux stream is completely liquid and is at its bubble point.(ii) Reflux stream is below its bubble point.

Mass Transfer
In a binary system, separation is very efficient, when the relative volatility is

Mass Transfer
With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

Mass Transfer
The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around

Mass Transfer
The expression, y(1 - x)/x(1 - y) is for

Mass Transfer
The binary diffusivity in gases at atmospheric conditions is about