Table 1.
A list of evaluated cases with different boundary conditions; all cases have in total five lessons and four breaks, except for Case 7, which has three lessons and two breaks.
| No. of occupants | Occupant density (m2/person) | Height of ceiling (m) | Length of lesson (min) | Length of breaks (min) | Supply flow rate (L/s) | ACH (h−1) | |
|---|---|---|---|---|---|---|---|
| Case 1 | 15 | 5.4 | 3.0 | 30 | 15 | 231 (Cat I) | 3.4 |
| Case 2 | 15 | 5.4 | 3.0 | 30 | 15 | 61.8 (Cat IV) | 0.9 |
| Case 3 | 15 | 5.4 | 3.0 | 30 | 15 | 0 (No ventilation) | 0 |
| Case 4 | 15 | 5.4 | 3.0 | 30 | 20 | 231 | 3.4 |
| Case 5 | 15 | 5.4 | 3.0 | 45 | 15 | 231 | 3.4 |
| Case 6 | 15 | 5.4 | 3.0 | 45 | 20 | 231 | 3.4 |
| Case 7 | 15 | 5.4 | 3.0 | 50 | 30 | 231 | 3.4 |
| Case 8 | 15 | 5.4 | 3.0 | 30 | 15 Occupants in room during breaks |
231 | 3.4 |
| Case 9 | 15 | 5.4 | 3.5 | 30 | 15 | 231 (Cat I) | 2.9 |
| Case 11 | 15 | 5.4 (2 infected occupants |
3.0 | 30 | 15 | 231 (Cat I) | 3.4 |
| Case 12 | 30 | 2.7 | 3.0 | 30 | 15 | 381 (Cat I) | 5.6 |