Natural ventilation result equal to zero

asked 2021-02-24 12:00:32 -0600

crisrossatto
173 ●1 ●6

updated 2021-02-24 12:35:28 -0600

14250 ●86 ●24 http://bigladdersoftware.com/

I am modeling a project that is totally naturally ventilated, in the results of air changes per hour (ACH), some hours have zero values. Looking at the weather file that I use, in some points the values for wind speed are zero and in those same points I have the result with zero value for air changes per hour (ACH). The results seem to be in compliance, but in the project there is an exhaust system that works passively and causes exhaustion even when the wind speed values are equal to zero. How can I represent this element of exhaustion that makes air changes happen even when the weather file says that the wind speed is equal to zero (without energy consumption)?

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@crisrossatto please add a tag for the simulation tool you are using so that others can provide better help.

Aaron Boranian ( 2021-02-24 12:04:49 -0600 )edit

Added. I am using Energy Plus 8.6

crisrossatto ( 2021-02-24 12:13:42 -0600 )edit

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Thanks for the answer! I am already using AirflowNetwork objects for natural ventilation. To use Fan: ZoneExhaust do I need to link it with the AirflowNetwork:Distribution:Component:Fan object? Will adding a fan to the zone generate energy consumption?

crisrossatto ( 2021-02-26 06:08:33 -0600 )edit

yes, exactly, you need to link the objects. And yes, fans do use energy, so you will see that from your fan.