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[EnergyPlus_Support] Hygro-regulated opening
- To: EnergyPlus_Support@xxxxxxxxxxxxxxx
- Subject: [EnergyPlus_Support] Hygro-regulated opening
- From: "aburrrrido" <aburrrrido@xxxxxxxxx>
- Date: Fri, 24 Apr 2009 08:57:25 -0000
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- Delivery-date: Fri, 24 Apr 2009 03:51:03 -0600
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Hi all,
I am currently trying to model a simple ventilation system based on an exhaust fan and outdoor air variable aperture paths that open according to the indoor relative humidity.
As I didn't find any object to directly do this, I am trying to use an AirflowNetwork:MultiZone:Component:DetailedOpening object and its AirflowNetwork:multizone:Surface object to model the variable aperture. But the Ventilation Control Mode of the surface object can only be done via Temperature or Enthalpy controls (or other not interesting for my purpose), and not via humidity.
So my questions are:
1- is it possible to make the surface object variable according to the relative humidity? (maybe adapting the program?)
2- or is there an other way to make it?
A second problem is that doing a simulation with a temperature controlled variable aperture, it appears that when the exhaust fan is on, the opening factor of the AirflowNetwork:multizone:Surface object has no influence on the air volume. It seems logical as the exhaust fan is treated as a constant volume fan.
So the issue is:
3- given that the goal of the variable aperture is to modulate the air volume, I would like the fan to be "constant pressure difference": is it realizable?
Many thanks in advance for your help.
Loïc
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