Air environment control in medical technological room of hospitals

The air environment control requirements of medical technological room can be grouped into three major types. The air cleaning supply system with fibrous filtration equipments shall be the preferred type for common use. Sometimes local air cleaning equipment can be used as appendix of the central air cleaning supply system. Nevertheless the use of local air cleaning equipment is not recommended in relative standards of United States. In Chinese design codes for civil buildings, mixing central air supply system with other air distribution measures is not recommended as well.