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Re: [EnergyPlus_Support] natural convection


If the only connection specified between the two zones is a surface, then there 
is no airflow between them.  The ActiveTrombeWall.idf example file illustrates 
one approach to moving air between two spaces.  MIXING and CROSS MIXING objects 
can also be used.  To model buoyancy-driven flows between the two zones would 
require the use of the COMIS air flow model.

Mike


On 19 Feb 2005, at 19:03, ogocer@xxxxxxxxxxxxxx wrote:

> 
> Dear all,
> i have simulated a sunspace attached a building has 50 squaremeters area.
> i got energy consumption of heating and cooling without defining any
> active system. and i used purchased air.idf for defining air supply.
> But i didn't define any ventilation flaps.i think something is wrong
> because there is no natural convection between two zones.
> is it means there is only energy transfer from sunspace to common wall
> that seperates building and sunspace?
> If  answer is yes, how can i define and schedule ventilation flaps on that
> wall and natural convection between two zones?
> 
> 
> 
> 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




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