[EnergyPlus_Support] Re: Night Ventilation

["airscapefans" <neil@xxxxxxxxxxxxxxxx>]

First of all, I'd like to know if Matt did find a solution.

Next, could someone give a detailed response as to how to model night free cooling. There seem to be conflicting (half) methods around.
- separate air handler?
- ZoneAirflow: ZoneVentilationDesignRate ?
- SystemAvailabilityManager: AvailabilityManager: NightVentilation?

I tried #2 (seemed logical), but my results do not seem credible.

I would appreciate if the instructions were somewhat more detailed than "try X".

Thank You


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, YuanLu Li <yli006@...> wrote:
>
> 
> Try the UnitVentilator model, using the minimum amount of cooling for the day time and the outdoor air ventilation as economizer.
> 
>  
> 
> The outdoor temperature is monotored to control the amount of air flow into the OA mixer inlet node
> 
> 
> 
>  Dr. Li   
> 
> 
> 
> 
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> From: liambrn@...
> Date: Mon, 19 Apr 2010 23:00:37 +0000
> Subject: [EnergyPlus_Support] Re: Night Ventilation
> 
>   
> 
> 
> 
> Matt,
> 
> As a means to estimate effectiveness of nighttime ventilation, you could create a ZoneVentilation object that only comes on at the appropriate time (night, summer, etc.) using a schedule and when the outdoor temperature is within a certain range. The limitation to this is that you'll need to carefully choose the range of dates so that ventilation doesn't cause unecessary daytime heating. 
> Hope that helps...
> 
> Liam O'Brien
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Matt Fung" <mfung@> wrote:
> >
> > Hello EnergyPlus Users,
> > 
> > 
> > 
> > I was wondering if anyone had any tips or examples as to how to model
> > night ventilation in a residential home. Any help would be greatly
> > appreciated. Thanks.
> > 
> > 
> > 
> > Matt Fung, P.E.
> > 
> > Research Engineer
> > 
> > <http://www.consol.ws/> 
> > 
> > 7407 Tam O'Shanter Drive
> > 
> > Stockton, CA 95210-3370
> > 
> > Phone: 209.473.5000 / Fax: 209.474.0817
> > 
> > MFung@ <mailto:MFung@> 
> > 
> > www.ConSol.ws <http://www.consol.ws/> 
> > 
> > 
> > 
> > You can call me directly at 209.473.5002
> > 
> > 
> > 
> > ConSol leads the Building Industry Research Alliance (BIRA) for the
> > Department of Energy.
> > 
> > To learn more about next generation homes and communities, visit 
> > www.BIRA.ws <http://www.bira.ws/>
> >
> 
> 
> 
> 
>  		 	   		  
> _________________________________________________________________
> Videos that have everyone talking! Now also in HD!
> http://go.microsoft.com/?linkid=9724465
>




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

Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to 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 currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

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

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

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/join
    (Yahoo! ID required)

<*> To change settings via email:
    EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx

<*> 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/