Re: [EnergyPlus_Support] Fw: [BLDG-SIM] Double Skin Buildings in Energy Plus

["Michael J. Witte" <mjwitte@xxxxxxxx>]

We will add your suggestion to the list of possible future enhancements.

With the current version, you should be able to approximate this in a stepwise 
fashion by using multiple MIXING objects between a pair of zones with different 
delta T controls.  The MIXING from all active objects should be summed 
together.  For example, MIXING of 0.1 from Zone 1 to Zone 2 with a delta T of 
1C, then MIXING of 0.15 from Zone 1 to Zone 2 with a delta T of 2C, and so on.  
Then at <1C dT 0 mixing flow, at 1C dT 0.1, at 2C dT 0.1+0.15=0.25 flow.  I do 
not think there is any limit on the number of MIXING objects, but I have not 
confirmed that by actually trying it.

Mike


On 4 May 2004, at 19:17, Samuel Hassid wrote:

> I meant that if one could make mixing rate proportional to DT^1/2 or at
> least somehow dependent on DT (as ventilation is) then that would be fine.
> DT in this case is obviously the difference between the temperature of the
> zones - not the difference between teh temperature of the zone and the
> outside temperature. Do you think this is possible ? Thanks
> ----- Original Message ----- 
> From: "Linda Lawrie" <linda@xxxxxxxxxx>
> To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
> Sent: Tuesday, May 04, 2004 6:07 PM
> Subject: Re: [EnergyPlus_Support] Fw: [BLDG-SIM] Double Skin Buildings in
> Energy Plus
> 
> 
> > Since Mixing and Cross-Mixing are between two zones, they don't use
> outside
> > temperature as their cut off point.
> >
> > Could you use a combination of ventilation and mixing to accomplish what
> > you want?  You said  you thought mixing would do the trick if you could
> > have it cut off at a certain temperature.  So, I guess you are suggesting that
> > another temperature parameter be introduced such that mixing would stop when
> > the "source zone" was at or below (or above?) a certain
> temperature?
> >
> > We can work with you to implement such a suggestion.
> >
> >
> > Linda
> >
> > EnergyPlus WebSite: http://www.energyplus.gov
> > Owner: EnergyPlus_Support list
> > Member: EnergyPlus Development Team
> >
> >
> >
> > [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.
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> 
> 
> 
> 
> 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.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 



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



------------------------ Yahoo! Groups Sponsor ---------------------~-->
Yahoo! Domains - Claim yours for only $14.70
http://us.click.yahoo.com/Z1wmxD/DREIAA/yQLSAA/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.
 
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/