AW: [EnergyPlus_Support] Natural Ventilation - Ventilation Object

["Arno Dentel" <arno.dentel@xxxxxxxxxxxxxxx>]

Mike.
Thank you for your tests and answer.
Yes, to control the ventialaton with a 
precalculated schedule is a way.
In which version the bug will be fixed?
Arno.
 
 

-----Ursprüngliche Nachricht-----
Von: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] Im Auftrag von Michael J.
Witte
Gesendet: Dienstag, 18. Oktober 2005 04:52
An: EnergyPlus_Support@xxxxxxxxxxxxxxx
Betreff: Re: [EnergyPlus_Support] Natural Ventilation - Ventilation
Object

A preliminary test of ventilation coefficients which result in a
negative 
ventilation flow rate appears to produce invalid results (a bug report
has 
been posted).  Avoid any coefficients which produce negative flow rates
for 
VENTILATION.  Even though your control strategy is rather simple, I
cannot 
think of a way to achieve this other than using a schedule.

Mike


On 6 Oct 2005, at 14:04, Arno Dentel wrote:

> Hello.
> I want to modell natural ventilation through external windows. The
> airfolw should 
> depend to the outside temperature. 
> The users should open the windows if the outside temperature is above
0
> °C. 
> And if the outside temperature is lower then 0 °C the windows are
> closed.
> So I modified the ventilation equation with a Temperature Term
> Coefficent of -0.05.
> But by outside temperatures under 0 °C, the airflow and
> Ventilation-Sensible Heat Loss are negative.
> What does EnergyPlus claculate in that case?
> Has the negative airflow an influence of the energy balance.
> 
> Thanks in advance.
> Arno
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
> 
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
> 
> The group web site is:
> http://groups.yahoo.com/group/EnergyPlus_Support/
> 
> Attachments are not allowed -- please post any files to the
appropriate folder
> in the Files area of the Support Web Site.
> 
> EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and
press the
> "search" button.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 



========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx





The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

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

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and
press the "search" button.
 
Yahoo! Groups Links



 






------------------------ Yahoo! Groups Sponsor --------------------~--> 
Most low income households are not online. Help bridge the digital divide today!
http://us.click.yahoo.com/cd_AJB/QnQLAA/TtwFAA/dkFolB/TM
--------------------------------------------------------------------~-> 

The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

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

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and press the "search" button.
 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> To unsubscribe from this group, send an email to:
    EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/