Re: [EnergyPlus_Support] Re: Holes and ventilation

[Jeremiah Crossett <jcrossett@xxxxxxxxxxxxxxx>]

In design builder- if you use the calculated natural ventilation than your  "vents/doors" will be modulated based on your settings and will automatically create your energy plus air flow network. I suggest you first do an external CFD analysis of your building model, then place your vents in locations of high air pressure & velocity, then after placing your vents in areas set them to open based on inside to outside temperature differences and enthalpy differences as to assure your air flow will be beneficial. Then run your Energy Plus model in Design Builder while checking the HVAC sizing summery report output. Check your peak cooling date/time, then re-simulate with sub-hourly output for only the peak cooling day, and then import your Energy Plus results into design builder CFD for the time of peak noted from the energy plus run- this will produce a visual snap shot of the maximum effectiveness of your natural ventilation strategy.

All the best-

Jeremiah D. Crossett  | Senior Analyst  |  Phase Change Energy Solutions

120 E. Pritchard St.  | Asheboro, NC 27203  | Mobile 503-688-8951

www.phasechange.com 

 

  

On Tue, Aug 7, 2012 at 3:10 AM, Jean marais <jeannieboef@xxxxxxxxx> wrote:

 

ZoneMixing object? Unless you're using AFN...in which case you put a crack on the fenestrationdetailed surface.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "FrancescoP" <direzionecontraria@...> wrote:
>
> In DesignBuilder I created holes on internal partitions. I saw that in the .idf file those holes are considered as "door" in the object FenestrationSurface:Detailed
> Is it normal?
> Now I'm developing the model in EnergyPlus. How can I impose the ventilation rate through holes placed on internal partitions?
> For the external windows I impose the ventilation rates through schedules.
> Best Regards
>

__._,_.___

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.

Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe

__,_._,___