[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[EnergyPlus_Support] Re: Simple Night + Day Ventilation


Hi Brent

Thanks for the advice regarding , "how to get a second ventilation 
object to operate on a zone".

I am not sure if this is going to work for me though.
I have created two zones, Zone A (the real zone) and Zone B ( the 
dummy zone) and linked these together using two mixing objects.

By applying the second "Ventilation Object" indirectly to Zone A 
using Zone B, the "Ventilation Object" is losing access to the 
internal temperatures in Zone A, which it needs to control night 
ventilation properly.

I know that by using two Mixing Objects and a high volume flow rate 
it is possible to force Zone B to be the same temperature as Zone A, 
but a consequence of this is that the air in Zone B heats up and the 
benefits of night ventilation available to Zone A are lost to some degree.
Essentially my model is not getting as cold at night using this 
system as it would using a standard ventilation object.

Sorry if I have not explained my concerns very clearly, or if I have 
misunderstood your suggestions.

Kind Regards

Rory




At 15:18 02/02/2006, you wrote:
>There is a modeling trick that can be used as a work around for more 
>than one simple Ventilation object to act on a zone.  1) Create 
>small, simple dummy Zone(s) that is/are not really part of the 
>model. 2) Apply the extra Ventilation objects to those dummy 
>zones.   3) Connect each dummy Zone to the actual Zone using pairs 
>of Mixing objects with pretty high flow rates for good mixing.

Rory Walsh
UCD Energy Research Group
School of Architecture, Landscape & Civil Engineering
University College Dublin
Richview, Belfield, Dublin 4, Ireland.
http://erg.ucd.ie


Tel:    +353-1-716 2682
Fax:    +353-1-283 8908



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/