Annual efficiency calculator
Select the unit model:
Enter calculation values :
| 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 |
Enter the target information:
| Handler: | |
| Date: | |
| Target: | |
| Name: | |
| Street address: | |
| Postcode: | |
| Post office: | |
| Project: | |
| Positio: | |
| Additional information: | |
Results:
| Results at the calculation point : | Supply: | Extract: |
| Fan speed: | nan % | nan % |
| Air flow: | 40 l/s | 40 l/s |
| Total pressure: | 20 Pa | 20 Pa |
| Air speed: | inf m/s | inf m/s |
| Input power: | nan W | nan W |
| Annual fan energy consumption | NAN kWh | |
| SFP value: | nan kW/(m³/s) | |
| Plate heat exchanger: | Supply: | Extract: |
| Pressure drop: | 0 Pa | 0 Pa |
| Efficiency with equal airflows: | 0.0 % | |
| Supply air temperature after the heat exhanger | -26.0 °C | |
| Postheating demand at the calculation point: | W / -26.0°C | |
| Off | ||
| On | ||
| Temperature after preheating: | - | |
| Preheating power: | - | |
| DIVK sound values at the calculation point | Lw | LwA |
| Supply air duct: | * dB | * dB(A) |
| Extract air duct: | * dB | * dB(A) |
| Soundpressure level in the room (10m² absorbtion LpA) |
* dB(A) | |
| SPL-levels by the octavebands | ||||||||||
| 63 | 125 | 250 | 500 | 1k | 2k | 4k | 8k | dB | dB(A) | |
| Through the casing to the room | * | * | * | * | * | * | * | * | * | * |
| Supply | * | * | * | * | * | * | * | * | * | * |
| Extract | * | * | * | * | * | * | * | * | * | * |
| Calculation of annual efficiency: | ||
| Exhaust air temperature: | 21.0 °C | |
| Exhaust air temperature limit | 0 °C | |
| Air flow ratio supply / extract | 1.00 | |
| Amount of energy required for ventilation: | 6351 kWh | |
| Achieved energy saving: | 0 kWh | |
| Total energy consumption for ventilation | 6351 kWh | |
| HRV annual efficiency: | 0.0 % | |