Re: [EnergyPlus_Support] Pressure rise and linkage pressure difference

[Lixing Gu <gu@xxxxxxxxxxxx>]

Your understanding is correct. The pressure rise defined in the exhaust fan 
input is used to calculate the fan power consumption, instead of the 
pressure difference calculated in the AirflowNetwork model. We know this 
issue, but have not finalized a plan yet.

Thanks.

Lixing
----- Original Message ----- 
From: "aburrrrido" <aburrrrido@xxxxxxxxx>
To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Tuesday, April 28, 2009 6:04 AM
Subject: [EnergyPlus_Support] Pressure rise and linkage pressure difference


> Dear all,
>
> A simple system causes me a problem...
>
> I have an exhaust fan (so constant volume) between a zone and outdoors, as 
> air flow outlet, and a window as air flow inlet.
> According to the window's opening, the report "linkage pressure 
> difference" shows that the pressure differences through the fan and 
> through the window logically vary.
> But the exhaust fan's parameters define the pressure rise of the fan (at 
> full flow and standard conditions, which is the case during my 
> simulation).
>
> So my question is: what is the difference between the pressure rise of the 
> fan and the linkage pressure difference for this fan? does the pressure 
> rise only serves to calculate the power consumption? why isn't the 
> pressure difference used to it?
>
> Thanks a lot.
>
>
>
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>
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>
>
> 



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