The relative humidity is defined as

Refrigeration and Air Conditioning
The relative humidity is defined as

The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure

The mass of water vapour present in 1 kg of dry air

The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure

The mass of water vapour present in 1 m3 of dry air

The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure

The mass of water vapour present in 1 kg of dry air

The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure

The mass of water vapour present in 1 m3 of dry air

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Refrigeration and Air Conditioning
In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about

5.12

1

1.25

2.15

5.12

1

1.25

2.15

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Refrigeration and Air Conditioning
The vertical and uniformly spaced lines on a psychrometric chart indicates

Wet bulb temperature

Specific humidity

Dew point temperature

Dry bulb temperature

Wet bulb temperature

Specific humidity

Dew point temperature

Dry bulb temperature

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Refrigeration and Air Conditioning
The conditioned air supplied to the room must have the capacity to take up

None of the listed here

Room latent heat load only

Both room sensible heat and latent heat loads

Room sensible heat load only

None of the listed here

Room latent heat load only

Both room sensible heat and latent heat loads

Room sensible heat load only

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Refrigeration and Air Conditioning
Critical pressure of a liquid is the pressure

Above which liquid becomes gas

Above which liquid becomes vapour

Above which liquid becomes solid

Above which liquid will remain liquid

Above which liquid becomes gas

Above which liquid becomes vapour

Above which liquid becomes solid

Above which liquid will remain liquid

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Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is very wet vapour

Before passing through the condenser

Before entering the compressor

After passing through the expansion or throttle valve

After passing through the condenser

Before passing through the condenser

Before entering the compressor

After passing through the expansion or throttle valve

After passing through the condenser

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning The relative humidity is defined as

Refrigeration and Air Conditioning In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about

Refrigeration and Air Conditioning The vertical and uniformly spaced lines on a psychrometric chart indicates

Refrigeration and Air Conditioning The conditioned air supplied to the room must have the capacity to take up

Refrigeration and Air Conditioning Critical pressure of a liquid is the pressure

Refrigeration and Air Conditioning In vapour compression cycle, the condition of refrigerant is very wet vapour

Refrigeration and Air Conditioning
The relative humidity is defined as

Refrigeration and Air Conditioning
In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about

Refrigeration and Air Conditioning
The vertical and uniformly spaced lines on a psychrometric chart indicates

Refrigeration and Air Conditioning
The conditioned air supplied to the room must have the capacity to take up

Refrigeration and Air Conditioning
Critical pressure of a liquid is the pressure

Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is very wet vapour