Table 1.
Air change rate according to PN-EN 12831 standard
| Building | Airtightness requirement at 50 Pa pressure n50, h -1 | ||
|---|---|---|---|
| high airtightness | medium airtightness | low airtightness | |
| Single family buildings | <4 | 4÷10 | >10 |
| Multifamily dwelling houses | <2 | 2÷5 | >5 |
Table 2.
Room characteristics
| No of room | Kind of room | Area | Volume | Characteristic |
|---|---|---|---|---|
| m2 | m3 | |||
| 01 | room 1 | 11.10 | 27.75 | Student’s living-room and bedroom. The door is often closed. Heated in wintertime. |
| 02 | living-room 2 | 17.40 | 43.50 | Living-room and dining room. The room is empty at night. In winter time heating isn’t required all the time. |
| 03 | bathroom 3 | 3.20 | 8.00 | Occupants take a bath in the mornings and evenings. Clothes are dried very often. |
| 04 | kitchen 4 | 5.60 | 14.00 | Room without door, meals are prepared three times a day. |
| 05 | room 5 | 10.50 | 26.25 | Student’s living-room and bedroom. Heated in wintertime. |
| 06 | room 6 | 8.00 | 20.00 | Bedroom close to the staircase. Occasionally heated in wintertime. |
| 07 | hall 7 | 15.20 | 38.00 | |
| ∑ | 71.0 | 177.5 |
Figure 1.
The variability of monthly mean temperature
Figure 2.
The variability of monthly maximum of relative humidity
Figure 3.
The variability of monthly maximum of CO2 concentration
Figure 4.
The variability of the average monthly CO2 concentration
Figure 5.
Measurement by Blower Door
Figure 6.
Elimination of leakages of dwelling
Table 3.
Results of airtightness measurement.
| n50, h-1 | V50, m3/h | C, m3/(h.Pan) | a, m3/(m.h.Pan) | |
|---|---|---|---|---|
| Underpressure | 1.14 | 195 | 15.15 | 0.32 |
| Overpressure | 1.18 | 202 | 14.20 | 0.30 |
Figure 7.
Measurement of air flow in exhaust opening
Table 4.
The required and measured exhaust air flow
| Room | The required exhaust air flow, m3/h | The measured exhaust air flow, m3/h |
|---|---|---|
| Kitchen | 70 | 9.90 |
| Bathroom | 50 | 15.24 |
| Toilet | 30 | 18.49 |
Figure 8.
Measured and simulated exhaust air flow
Figure 9.
Measured and predicted mean air flow rate in the flat
Figure 10.
Air flows in tested dwelling
Figure 11.
The air exchange rate according to different opening level of the air inlets