| Title |
Distributions of Local Supply and Exhaust Effectiveness according to the Room Airflow Patterns |
| Keywords |
Ventilation effectiveness ; 환기효율 ; Local mean age ; 국소평균연령 ; Local mean residual-life-time ; 국소평균잔여체류시간 ; Pulsed tracer method ; 펄스법 |
| Abstract |
A pulsed tracer gas technique is applied to measure distributions of local mean age and residual life time of air in a half-scale experimental chamber. The room airflow patterns are flow-visualized by a Helium bubble generator for three different exhaust locations. A supply slot is located at the top of a right wall, and an exhaust slot is either at bottom- left (Case 1), bottom-right(Case 2), or top-left (Case 3) location. Results show that the distributions of LMA and LMR are different from each other, but both of them are closely related to the airflow pattern in the space. Results on overall room ventilation effectiveness are provided depending upon ventilation airflow rates for three different supply-exhaust configurations. |