What is an AC? |
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It is a system for controlling the humidity, ventilation, and temperature in a building or a vehicle, typically to maintain a cool atmosphere.
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Working of a window AC |
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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 room to the outside air.
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The machine has three main parts. They are a compressor, a condenser and an evaporator.
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The compressor and condenser are usually located on the outside air portion of the air conditioner.
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The evaporator is located on the inside the room, sometimes as part of a furnace.
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The working fluid arrives at the compressor as a cool, low-pressure gas.
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The compressor squeezes the fluid.
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This packs the molecule of the fluid closer together.
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Watch this video !
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The working fluid leaves the compressor as a hot, high pressure gas and flows into the condenser.
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The fins act just like a radiator in a car and help the heat go away, or dissipate, more quickly.
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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.
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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.
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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.
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The evaporator also has metal fins to help in exchanging the thermal energy with the surrounding air.
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This continues over and over and over until the room reaches the temperature which is already set.
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The thermostat senses that the temperature has reached the right setting and turns off the compressor of AC.
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As the room warms up, the thermostat turns the compressor of AC back on until the room reaches the set temperature.
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