Experimental study a new type of Air Handling Units Applied to underground building

The underground construction is different from the building above ground with some features such as closed, wet, warm in winter and cool in summer. This article analyzed these features and developed a special type of Air Handling Units (AHU) for the underground building. This low resistance AHU can bypass air with the Rotating air cooling coil structure and vary supply air volume during transitional season. A set of apparatus for testing AHU performance is constructed, Supply air volume, total pressure, fan power and energy-saving rate of a new type of AHU have been tested and compared.