Control strategy of fan filter units in cleanroom considering of the moving personnel

Fan filter units (FFUs) are crucial to maintaining the cleanliness of cleanrooms. Traditionally, air volume FFU is not adjusted and maintained at a rated value, resulting in huge amount energy. Previous research proved that controlling FFUs based on personnel position was effective cleanrooms with non-uniform environment, could further reduce volumes. However, control strategy for moving has been given. In this study, numerically simulated typical cleanroom. A proposed only 4 above operate high velocity still 10 seconds after leaves. The results show can guarantee satisfactory cleanliness, be reduced by 53.6% 18.7% compared uniform strategies designed decreased velocity, respectively. Since fewer cleanroom, study will conduce tremendous energy reductions FFUs, which may have promising application potential