A standard hand dryer is an electric equipment usually found in public toilets, for drying the hands after washing. It works by blowing air, generally heated, over the hands, thereby evaporating moisture. Traditional models use a motor-driven fan to direct warm air through a wide nozzle, gradually drying the hands. While they are effective, those dryers tend to be slower and use more power than other high-speed types. Yet they have been popular because they are quite reliable and less expensive up front than high-speed versions, giving a sanitary and eco-friendly alternative to paper towels.
