Supply | Extract | |
Airflow: | l/s | l/s |
Duct pressure: |
Pa | Pa |
Place:
Design temperature: | °C |
Exhaust air temperature limit: | °C |
Supply air target temperature : | °C |
Extract air temperature: | °C |
Handler: | |
Date: | |
Target: | |
Name: | |
Street address: | |
Postcode: | |
Post office: | |
Project: | |
Positio: | |
Additional information: |
Results at the calculation point : | Supply: | Extract: |
Fan speed: | 48 % | 45 % |
Air flow: | 70 l/s | 70 l/s |
Total pressure: | 28 Pa | 28 Pa |
Air speed: | 2.2 m/s | 2.23 m/s |
Input power: | 28 W | 25 W |
Annual fan energy consumption | 468 kWh | |
SFP value: | 0.76 kW/(m³/s) |
Plate heat exchanger: | Supply: | Extract: |
Pressure drop: | 47 Pa | 47 Pa |
Efficiency with equal airflows: | 81.9 % | |
Supply air temperature after the heat exhanger | 12.5 °C | |
Postheating demand at the calculation point: | 298 W | |
Off | ||
On | ||
Temperature after preheating: | - | |
Preheating power: | - |
DIVK sound values at the calculation point | Lw | LwA |
Supply air duct: | 61.0 dB | 54.6 dB(A) |
Extract air duct: | 52.6 dB | 43.1 dB(A) |
Soundpressure level in the room (10m² absorbtion LpA) |
32.3 dB(A) |
SPL-levels by the octavebands | ||||||||||
63 | 125 | 250 | 500 | 1k | 2k | 4k | 8k | dB | dB(A) | |
Through the casing to the room | 55 | 49 | 37 | 31 | 32 | 22 | * | * | 57.6 | 36.3 |
Supply | 56 | 54 | 54 | 50 | 52 | 48 | 43 | 32 | 61.0 | 54.6 |
Extract | 46 | 47 | 42 | 42 | 40 | 35 | 26 | 12 | 52.6 | 43.1 |
* The sound level of the measurement does not exceed the background noise level |
Calculation of annual efficiency: | ||
Exhaust air temperature: | -17.5 °C | |
Exhaust air temperature limit | 0 °C | |
Air flow ratio supply / extract | 1.00 | |
Amount of energy required for ventilation: | 11115 kWh | |
Achieved energy saving: | 8466 kWh | |
Total energy consumption for ventilation | 2649 kWh | |
HRV annual efficiency: | 76.2 % |