Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

Chemical Engineering Thermodynamics
Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

Increased COP

Decreased COP

Increased or decreased COP ; depending upon the type of refrigerant

Same COP

Increased COP

Decreased COP

Increased or decreased COP ; depending upon the type of refrigerant

Same COP

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Chemical Engineering Thermodynamics
When a gas is expanded from high pressure region to low pressure region ; temper -ature change occurs. This phenomenon is related to the

Third law of thermodynamics

Gibbs-Helmholtz equation

Gibbs-Duhem equation

Joule-Thomson effect

Third law of thermodynamics

Gibbs-Helmholtz equation

Gibbs-Duhem equation

Joule-Thomson effect

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Chemical Engineering Thermodynamics
Which of the following has the minimum value of COP for a given refrigeration effect?

Reverse Carnot cycle

Air refrigeration cycle

Vapour-compression process with a reversible expansion engine

Ordinary vapour-compression cycle

Reverse Carnot cycle

Air refrigeration cycle

Vapour-compression process with a reversible expansion engine

Ordinary vapour-compression cycle

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Chemical Engineering Thermodynamics
Equilibrium constant of a reaction varies with the

None of these

Pressure

Initial concentration of the reactant

Temperature

None of these

Pressure

Initial concentration of the reactant

Temperature

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Chemical Engineering Thermodynamics
If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

100

200

205

50

100

200

205

50

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Chemical Engineering Thermodynamics
Second law of thermodynamics is concerned with the

Non-cyclic processes only

Amount of energy transferred

Direction of energy transfer

Irreversible processes only

Non-cyclic processes only

Amount of energy transferred

Direction of energy transfer

Irreversible processes only

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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

Chemical Engineering Thermodynamics When a gas is expanded from high pressure region to low pressure region ; temper -ature change occurs. This phenomenon is related to the

Chemical Engineering Thermodynamics Which of the following has the minimum value of COP for a given refrigeration effect?

Chemical Engineering Thermodynamics Equilibrium constant of a reaction varies with the

Chemical Engineering Thermodynamics If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

Chemical Engineering Thermodynamics Second law of thermodynamics is concerned with the

Chemical Engineering Thermodynamics
Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

Chemical Engineering Thermodynamics
When a gas is expanded from high pressure region to low pressure region ; temper -ature change occurs. This phenomenon is related to the

Chemical Engineering Thermodynamics
Which of the following has the minimum value of COP for a given refrigeration effect?

Chemical Engineering Thermodynamics
Equilibrium constant of a reaction varies with the

Chemical Engineering Thermodynamics
If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

Chemical Engineering Thermodynamics
Second law of thermodynamics is concerned with the