The bypass factor (B. P. F.) in case of sensible heating of air is (Where td₁ = Dry bulb temperature of air entering the heating coil, td₂ = Dry bulb temperature of air leaving the heating coil, and td₃ = Dry bulb temperature of heating coil)

Refrigeration and Air Conditioning
The bypass factor (B. P. F.) in case of sensible heating of air is (Where td₁ = Dry bulb temperature of air entering the heating coil, td₂ = Dry bulb temperature of air leaving the heating coil, and td₃ = Dry bulb temperature of heating coil)

(td₃ - td₁)/(td₂ - td₃)

(td₃ - td₂)/(td₃ - td₁)

(td₃ - td₁)/(td₃ - td₂)

(td₂ - td₃)/(td₃ - td₁)

(td₃ - td₁)/(td₂ - td₃)

(td₃ - td₂)/(td₃ - td₁)

(td₃ - td₁)/(td₃ - td₂)

(td₂ - td₃)/(td₃ - td₁)

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Refrigeration and Air Conditioning
R-12 is generally preferred over R-22 in deep freezers since

It gives higher coefficient of performance

It has low operating pressures

All of these

It is miscible with oil over large range of temperatures

It gives higher coefficient of performance

It has low operating pressures

All of these

It is miscible with oil over large range of temperatures

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Refrigeration and Air Conditioning
An important characteristic of absorption system of refrigeration is

noisy operation

quiet operation

very little power consumption

cooling below 0°C

noisy operation

quiet operation

very little power consumption

cooling below 0°C

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Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Dry bulb depression

Wet bulb depression

Degree of saturation

Dew point depression

Dry bulb depression

Wet bulb depression

Degree of saturation

Dew point depression

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Refrigeration and Air Conditioning
In a bootstrap air evaporative cooling system, the evaporator is provided

Between the secondary compressor and the second heat exchanger

Between the first heat exchanger and the secondary compressor

Between the combustion chamber and the first heat exchanger

Between the second heat exchanger and the cooling turbine

Between the secondary compressor and the second heat exchanger

Between the first heat exchanger and the secondary compressor

Between the combustion chamber and the first heat exchanger

Between the second heat exchanger and the cooling turbine

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Refrigeration and Air Conditioning
Which of the following refrigerant has the lowest freezing point?

Ammonia

R-22

R-12

R-11

Ammonia

R-22

R-12

R-11

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning The bypass factor (B. P. F.) in case of sensible heating of air is (Where td₁ = Dry bulb temperature of air entering the heating coil, td₂ = Dry bulb temperature of air leaving the heating coil, and td₃ = Dry bulb temperature of heating coil)

Refrigeration and Air Conditioning R-12 is generally preferred over R-22 in deep freezers since

Refrigeration and Air Conditioning An important characteristic of absorption system of refrigeration is

Refrigeration and Air Conditioning The difference between dry bulb temperature and wet bulb temperature, is called

Refrigeration and Air Conditioning In a bootstrap air evaporative cooling system, the evaporator is provided

Refrigeration and Air Conditioning Which of the following refrigerant has the lowest freezing point?

Refrigeration and Air Conditioning
The bypass factor (B. P. F.) in case of sensible heating of air is (Where td₁ = Dry bulb temperature of air entering the heating coil, td₂ = Dry bulb temperature of air leaving the heating coil, and td₃ = Dry bulb temperature of heating coil)

Refrigeration and Air Conditioning
R-12 is generally preferred over R-22 in deep freezers since

Refrigeration and Air Conditioning
An important characteristic of absorption system of refrigeration is

Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Refrigeration and Air Conditioning
In a bootstrap air evaporative cooling system, the evaporator is provided

Refrigeration and Air Conditioning
Which of the following refrigerant has the lowest freezing point?