Air Conditioning

Hot weather air-conditioning systems, like the one shown here, are used to keep household air from becoming uncomfortably hot, humid, or stale. Air-conditioning systems are fairly complex, so they are usually installed as a house is being built. The system shown involves three separate cycles: the air cycling through the ducts inside the house, the flow of air through the unit outside the house, and the circulation of the refrigerant between the inside and outside units. Air in a duct system passes through a filter to remove dust particles. Then it enters a blower, which sends the air into the evaporator. The hot air vaporizes the refrigerant, which cools the air and transports the heat out of the house. Clean, cool air then passes through the duct system and throughout the house, later returning to be cooled again. The refrigerant is condensed, cooled by outside air, compressed, and then sent back to the evaporator.

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Heating, Ventilating, and Air Conditioning

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