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[EnergyPlus_Support] Airflow Network: Difference between Flow rate and Infiltration Volume
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- Subject: [EnergyPlus_Support] Airflow Network: Difference between Flow rate and Infiltration Volume
- From: "Farhang" <farhang223@xxxxxxxxx>
- Date: Wed, 08 Jun 2011 09:54:38 -0000
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Hi,
I created a simple one-zone model with two windows to better understand the Airflow
Network Outputs, and I got the following results in an specific hour:
1st_WIN:AirflowNetwork Volume Flow Rate from Node 1 to 2 [m3/s]: 0.39
1st_WIN:AirflowNetwork Volume Flow Rate from Node 2 to 1 [m3/s]: 0.00
2nd_WIN:AirflowNetwork Volume Flow Rate from Node 1 to 2 [m3/s]: 0.00
2nd_WIN:AirflowNetwork Volume Flow Rate from Node 2 to 1 [m3/s]: 0.39
AirflowNetwork Zone Infiltration Volume [m3](Hourly): 1417.06
I believed that the Infiltration Volume is equal to (Flow rate into the zone * 3600) so the infiltration volume = 0.39 * 3600 = 1386.12 m3. But the output Infiltration volume is always larger than my simple manual calculations.
I am an architect and I am not too into the engineering base of EnergyPlus. Can anyone tell me, why there is a difference between the "flow rate into the zone" and "infiltration" and how EnergyPlus calculates infiltration?
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