How does Air Conditioner emits cold/hot air?
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Air conditioners and refrigerators pump refrigerant through a closed loop. When the refrigerant goes through the pump, it gets compressed into a liquid; the liquid passes through a series of coils outside your house where a fan draws air across it cooling down the refrigerant. The liquid goes through a small nozzle and then into a special coil called an evaporator which looks like a radiator. The nozzle causes the refrigerant to expand. As it passes through the evaporator coil, it picks up heat from the air that passes over it from a fan cooling down the air. The heat it picks up and the rapid expansion causes the refrigerant to turn into a gas. The gas goes through the pump again and the cycle repeats.
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