3. HVAC
DEFINITION
▸ ‘HVAC’ refers to Heating
Ventilation and Air Conditioning,
which can be used in buildings
to
▸ Maintain internal air quality.
▸ Regulate internal temperatures
▸ .Regulate internal humidity.
▸ It is sometimes extended to
include refrigeration (HVACR),
heating, ventilating, air
conditioning and refrigeration.
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4. AIR CONDITIONING
DEFINITION
▸ An air conditioner in a room or a
car works by absorbing hot air
from a particular room,
processing it into itself with the
help of a refrigerant and a series
of coils, and then releasing cool
air into the same room where
the hot air was originally
collected.
▸ An air conditioner is basically a
refrigerator. It uses the
evaporation of a refrigerant, like
Freon, to provide cooling.
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6. AIR CONDITIONING
WORKING PRINCIPLE
▸This processing is mainly
carried out via five
components:
▸Evaporator
▸Compressor
▸Condenser
▸Expansion valve
▸Refrigerants
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7. AIR CONDITIONING
WORKING PRINCIPLE
▸ An air conditioner collects warm air from a given location, processes it with the help of
a refrigerant and a series of coils within it, and then releases the cold air to the place
where the hot air was initially collected.
▸ This hot air is drawn from the base of the indoor unit through the grille; the air flows
through some of the pipes through which the refrigerant or the cooling fluid is leaking.
▸ The refrigerant liquid absorbs heat and becomes hotter than before. In this way, how
the weather is removed from the air falling on the evaporating coil.
▸ The evaporator coil not only absorbs heat but also expels moisture from the incoming
air, which helps reduce condensation from the room.
▸ This hot refrigerant gas is then passed to the compressor located on the external unit
in case of split AC.
▸ The compressor compresses the cooling gas so that it heats up because compressing
the gas raises its heat.
▸ This hot, high-pressure gas then moves to the third section called a condenser.
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