The no-duct inductive ventilation system originate from the duct spray nozzle inductive ventilation and air conditioning system, which was advanced by Swedish ABB Company in 1974 and named as DIRVENT SYSTEM.
Principles of ductless inductive ventilation system are analyzed. The technical and economical performance of ductless inductive ventilation system and traditional ventilation system of the underground parking is compared in engineering examples.
Outlines the principle and characteristic of the induction ventilation system,and its application to design of under ground garage. Compared induction ventilation system with usual used ventilation system.