Air conditioners are an essential part of modern life in many parts of the world. Since they were first introduced, they have become indispensable in places where the climate is hot throughout the year. They are popular even in places with generally moderate climate. Air conditioners are so ubiquitous in in towns and cities that we in Australia tend to take them for granted and give little thought to them until they break down. That?s when we think about these largely invisible and silent machines that give us so much comfort. If you are looking for good bargains on air conditioners, search for air conditioning Australia on the Web.
Air conditioning removes the heat from any closed space, such as a room, to a level that makes life comfortable. They are similar in nature to refrigerators in both in theory and practice, except that they cool a much larger area than refrigerators. These machines are built on the simple principle that when a liquid converts into gas ? a process called phase conversion ? it absorbs heat from the surrounding air. As a result, the air becomes cooler. Air conditioners exploit this law of physics by forcing a special chemical ingredient to evaporate and condense again and again in a closed system of coils.
While people have made attempts to build air conditioners for over two thousands of years, such as houses cooled by circulating aqueduct water in walls in ancient Rome and the huge rotary fan invented by a Chinese inventor in the 2nd century AD, the modern electrical air conditioner was invented inadvertently in 1902 by an American engineer named Willis Haviland Carrier. The machine became popular with theaters and stores to counter to heat of the long, hot summer days. It was not long before Willis Haviland Carrier started to install it in their homes and offices.
Air conditioners have a set of low pressure coils filled with a chemical compound that can change from liquid state to gaseous state at relatively low temperatures. This chemical compound is called the refrigerant. They also have a fan that draws in the ambient air and passes the same over the coils. The hot air converts the refrigerant inside the coild from liquid to gas. As a result of loss of heat, the air becomes cold and this cold air is thrown back into the room. However, to keep working, the gaseous refrigerant has to change back to liquid state. The gaseous compound is now passed through a pump which puts it through high pressure. This creates heat which is thrown outdoors by another set of coils and a fan. After the gas cools it changes back into liquid form and the process starts all over again.
An air conditioner is made of major components: evaporator, condenser, compressor and expansion valve. The evaporator constitutes the set of coils that contains the refrigerant in its liquid state. The compressor is the pump that puts pressure on the refrigerant when it is in its gaseous state. The condenser works as a facilitator to transfer heat to the outdoor. The expansion valve controls the flow of the refrigerant into the evaporator. Air conditioners are basically made of these four components; different types of air conditioners may have slightly different setups. Now that you know the basic principle behind refrigerators, search for air conditioning Australia to find great bargains on air conditioners in Australia.
If you are looking for trusted ac and evaporative cooling solutions, have a look at air conditioning.
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