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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

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Date:
Target:
 
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Results:

Results at the calculation point : Supply: Extract:
Fan speed: 58 % 55 %
Air flow: 200 l/s 200 l/s
Total pressure: 40 Pa 50 Pa
Air speed: 4.1 m/s 4.07 m/s
Input power: 116 W 105 W
Annual fan energy consumption 1941 kWh
SFP value: 1.11 kW/(m³/s)

 
Plate heat exchanger: Supply: Extract:
Pressure drop: 96 Pa 96 Pa
Efficiency with equal airflows: 77.9 %
Supply air temperature after the heat exhanger 10.6 °C
Postheating demand at the calculation point: 1306 W
Off
On
Temperature after preheating: -
Preheating power: -

 
DIVK sound values at the calculation point Lw LwA
Supply air duct: 64.1 dB 59.8 dB(A)
Extract air duct: 57.5 dB 47.5 dB(A)
Soundpressure level in the room
(10m² absorbtion LpA)
37.9 dB(A)

 

SPL-levels by the octavebands
631252505001k2k4k8kdBdB(A)
Through the casing to the room625346383525**62.641.9
Supply535353565753483864.159.8
Extract484847464340331957.547.5
* The sound level of the measurement does not exceed the background noise level

 
Calculation of annual efficiency:
Exhaust air temperature: -15.6 °C
Exhaust air temperature limit 0 °C
Air flow ratio supply / extract 1.00
Amount of energy required for ventilation: 31756 kWh
Achieved energy saving: 23335 kWh
Total energy consumption for ventilation 8421 kWh
HRV annual efficiency: 73.5 %

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Created:March 04 2021 08:41:48