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Re: [EnergyPlus_Support] Re: Ventilation heat losses / gains



Ana:

The problem is from reporting only. The ventilation calculation part is 
correct. Therefore, other results dependent on the ventilation calculation 
are correct too.

Lixing

----- Original Message ----- 
From: "Ana Rui Oliveira" <anarui.oliveira@xxxxxxxxx>
To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Thursday, October 02, 2008 4:11 AM
Subject: [EnergyPlus_Support] Re: Ventilation heat losses / gains


Thanks so much!
But, is it just a problem with the reported variable, or is
ventilation incorrectly affecting the simlation loads? I already
estimated loads with Purchased Air and need to know if they're over-
estimated.

Thanks again,
Ana.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Lixing Gu <gu@...> wrote:
>
> Ana:
>
> Your observation is right. Results of the ventilation heat gain are
not
> right. The problem is that the report variable of ventilation
sensible heat
> gain was not initialized. The problem was raised after Version 2.2
release
> and was fixed for the next release (CR 7519). Results of the
ventilation
> heat loss are correct. The workaround is to use infiltration
objects instead
> of ventilation objects, since you don't use fan power.
>
> Please let me know if you have any problems.
>
> Lixing
> ----- Original Message ----- 
> From: "Ana Rui Oliveira" <anarui.oliveira@...>
> To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
> Sent: Tuesday, September 30, 2008 11:16 AM
> Subject: [EnergyPlus_Support] Ventilation heat losses / gains
>
>
> Hi.
>
> Kind of urgently...
>
> Any ideia why the ventilation heat gain in a Summer week (both
sensible
> and total) would be of a much higher order of magnitude than the
> ventilations loss in a Winter week?
>
> Ventilation is done using AirFlow»Ventilation objects with ero "Fan
> Pressure Rise" and I'm just using Purchased Air to control
> temperatures, so there shouldn't be any temperature rise due HVAC
> components?...
>
> I uploaded a file with some prt screens of these graphic results, to
> facilitate interpretation.
>
> Appreciate any help...
> Ana.
>
>
>
> ------------------------------------
>
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>
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under the
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> Yahoo! Groups Links
>



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Attachments are not allowed -- please post any files to the appropriate 
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Documentation link and press the "search" button.
Yahoo! Groups Links





------------------------------------

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Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.

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