AIR CONDITIONER

AIR COND

Air conditioning like it says 'conditions' the air. It not only cools it down, but also reduces the moisture content, or humidity. All air conditioners work the same way whether they are installed in a building, or in a car. The fridge or freezer is in a way an air conditioner as well. Air conditioning is a field in it's own right, but we'll stick to the main points or a car's air conditioning and the main parts used and a few hints to keep the air-con system running properly. A number of people don't realise that turning on the air conditioning actually reduces the number of miles per gallon of your car. There is energy used in removing the heat and moisture from the air in the car, and this consumes petrol because of the extra engine load. Air conditioning's main principles are Evaporation and Condensation, thenCompression and Expansion. To the engineer and physicists they talk of thermodynamics - but we'll explain it in our own way here: Evaporation: You may have noticed that if you rub a little surgical spirits on the back of your hand, then your hand will feel cold. Why is that? It's evaporation. It is because the spirits on the back of your hand start to evaporate. As the spirit evaporates, it takes away heat from the surface of your skin.