| Title |
A Numerical Study on the Particle Collection Characteristics of a Grease Filter for Kitchen Ventilation |
| Keywords |
Grease filter ; 그리스 필터 ; Particle ; 입자 ; Collection efficiency ; 포집효율 ; Pressure drop ; 압력강하 ; Inertial impaction ; 관성충돌 ; Kitchen ventilation ; 주방환기 |
| Abstract |
A grease filter is used to remove grease generated from a cooking appliance in a kitchen. This numerical study has been conducted to investigate the particle collection characteristics of a grease filter having nominal flowrate of 100m3/h. The flow field and particle trajectories in the grease filter with a flow chamber were simulated by using the commercial code of STAR-CD. The air velocity and pressure distributions were discussed in detail. The pressure drop of a grease filter rapidly increases with increasing the air flowrate. The numerical values of the pressure drop are slightly lower than the experimental values when the air flowrates are 50, 75, and 100m3/h. The particle collection efficiency of a grease filter increases with increasing the particle diameter, the particle density, and the air flowrate, which means that the inertial impaction is a dominant particle removal mechanism in a grease filter. The cut-off diameter of the tested grease filter representing 50-% collection efficiency is about 11.6m for water droplets at 100m3/h. |