We all are know about ac. That it control the heat. But how? lets see that..
Air conditioner (AC) are use to control heat. Refrigerator
and AC work in same prices.
Air conditioners use chemicals that easily convert from
a gas to a liquid
and back again. This chemical is used to transfer heat from the air inside of a
home to the outside air.
A compressor, a condenser and an evaporator is the part
of AC. The compressor and condenser are usually located on the outside air portion of the
air conditioner. The
evaporator is located on the inside the house, sometimes as part of a furnace.
That's the part that heats your house.
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| Pic of AC |
The working fluid arrives at the compressor as a cool,
low-pressure gas. The compressor squeezes the fluid. This packs the molecule of
the fluid closer together. The closer the molecules are together, the higher its
energy and its temperature.
The working fluid leaves the compressor as a hot, high
pressure gas and flows into the condenser. If you looked at the air conditioner
part outside a house, look for the part that has metal fins all around. The fins
act just like a radiator in a car and help the heat go away, or dissipate, more
quickly.
When the working fluid leaves the condenser, its temperature
is much cooler and it has changed from a gas to a liquid under high pressure.
The liquid goes into the evaporator through a very tiny, narrow hole. On the
other side, the liquid's pressure drops. When it does it begins to evaporate
into a gas.
As the liquid changes to gas and evaporates, it extracts
heat from the air around it. The heat in the air is needed to separate the
molecules of the fluid from a liquid to a gas.
The evaporator also has metal fins to help in exchange the
thermal energy with the surrounding air.
By the time the working fluid leaves the evaporator, it is a
cool, low pressure gas. It then returns to the compressor to begin its trip all
over again.
Connected to the evaporator is a fan that circulates the air
inside the house to blow across the evaporator fins. Hot air is lighter than
cold air, so the hot air in the room rises to the top of a room.
There is a vent there where air is sucked into the air
conditioner and goes down ducts. The hot air is used to cool the gas in the
evaporator. As the heat is removed from the air, the air is cooled. It is then
blown into the house through other ducts usually at the floor level.
This continues over and over and over until the room reaches
the temperature you want the room cooled to. The thermostat senses that the
temperature has reached the right setting and turns off the air conditioner. As
the room warms up, the thermostat turns the air conditioner back on until the
room reaches the temperature.
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