Table 2.
CAV & VAV outdoor fresh air flow rate with various scenarios combinations.
| Time (h)a | Occupancy schedule | Total outdoor air flow rate L/sb |
|||||
|---|---|---|---|---|---|---|---|
| CAV |
VAV |
||||||
| 8.5 L/S (I) | 12.7 L/S (II) | 17 L/S (III) | 8.5 L/S (I) | 12.7 L/S (II) | 17 L/S (III) | ||
| 9:00–12:00 | 5 | 42.5 | 63.75 | 85 | 42.5 | 63.75 | 85 |
| 12:00–14:00 | 2 | 42.5 | 63.75 | 85 | 17.0 | 25.50 | 34 |
| 14:00–18:00 | 5 | 42.5 | 63.75 | 85 | 42.5 | 63.75 | 85 |
| 18:00–21:00 | 3 | 42.5 | 63.75 | 85 | 25.5 | 38.25 | 51 |
We assume that the outdoor CO2 concentration is 400 ppm and initial indoor air particle concentration is 0 μg/m3. All outdoor air flow rates in column (I), (II) and (III) are applied for each case separately.
a
The period of time-dependent particle source is 12 h. Only the values within 12 h are listed in this table. The simulation time is 12 h.
b
The values of outdoor fresh air flow rate per person.