[EnergyPlus_Support] Re: ZoneVentilation:WindandStackOpenArea

["Luis Blanes" <lmblanes@xxxxxxxxx>]

Thanks Lixing Gu
Sometimes the definitions make you think too much. I understand that here E+ let you an opportunity to add more features to this input, as it is not related with a surface, just to a Zone. And I suppose E+ is not checking geometry or anything, and a zone may content many surfaces...
Thanks
Luis

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Lixing Gu <gu@...> wrote:
>
> Here is the revised description and the revision will be available in the
> next release.
> 
> Field: Effective Angle
> 
> This is the angle in degrees counting from the North clockwise to the
> opening outward normal. The value must be between 0 and 360, with the
> default being 0 if this input field is left blank. The Effective Angle is 0
> if the opening outward normal faces North, 90 if faces East, 180 if faces
> South, and 270 if faces West. The value is fixed and independent of
> coordinate system defined in the GlobalGeometryRules object. This input
> field value is used to calculate the angle between the wind direction and
> the opening outward normal to determine the opening effectiveness values
> when the input field Opening Effectiveness = Autocalculate.
> 
> Hope this helps.
> 
> Lixing
> 
> 
> -----Original Message-----
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Luis Blanes
> Sent: Wednesday, June 08, 2011 4:34 PM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] ZoneVentilation:WindandStackOpenArea
> 
> Hi Modellers
> 
> I am just trying to understand the values within the following Object:
> 
> ZoneVentilation:WindandStackOpenArea
> 
> Specifically I don't really understand the "OpeningEffectiveness" and
> "EffectiveAngle" variables.
> 
> According with the I/O manua, If in "OpeningEffectiveness" is input
> "Autocalculate", then E+ will use values in "EffectiveAngle" but:
> 
> What is the angle to input? Is not really clear in the I/O manual. It states
> "the effective angle of the opening outward normal in degrees...", but I
> would like somebody to explain as this: "The angle between the normal and
> xxxx "
> 
> I am trying to understand this, but I do not reach to an conclusion...Does
> it means the angle formed by the outward normal and the North? Why do we
> have to input that? 
> 
> Has anyone have a better understanding on it?
> 
> Thanks
> Luis Blanes
> 
> 
> 
> 
> 
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