The Hot Air Dryer machine uses a high-temperature resistant circulation fan to circulate forced hot air in the oven through a steam heat exchanger or electric heat pipe heating, which enhances the heat transfer and improves the efficiency of evaporating moisture, and dramatically reduces the drying time. Hot-air dryers are suited to preheating and drying non-hygroscopic or slightly hygroscopic plastics. Hot Air Dryer is a system or piece of equipment that is used to remove moisture present in the air, particularly compressed air.