Re: [EnergyPlus_Support] COMIS capabilities

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

1.  COMIS 3.0 with some minor enhancements.  I do not know if the enhancements 
are in the COMIS code or the supporting EnergyPlus structure.  I do not have a 
list, but I believe they would be additional vent control capabilities and the 
option to calculate wind pressure coefficients for rectangular geometry.

2.  The COMIS source code is integrated in the EnergyPlus executable.

3.  Only one air network is allowed.  The only way to accomplish this would be 
to add a very tiny opening between the two houses.  This joins the two networks 
into a single network, but the impact on results should be negligible.

4.  No, because COMIS cannot simulate the flow through a large horizontal 
opening.  Large openings in COMIS must be vertical, only cracks can be 
horizontal.  Modeling atria is very difficult.  I do not have any 
recommendations on how to model them.

Mike


On 23 Jul 2004, at 8:52, mkenergycentre wrote:

> Dear All,
> 
> Some quick questions about COMIS:
> 
> 1) Is COMIS supplied as part of EnergyPlus? Is it COMIS 3.0? Or has 
> it been developed in any way? If so, does anyone have a list of these 
> additional developments?
> 
> 2) How is the simulation with COMIS performed? i.e. does COMIS run 
> separately as another executable and the two programs exchange data 
> as the simulation proceeds, or has the COMIS source code been 
> integrated into the main simulation of EnergyPlus? If it's the former 
> does this make the simulation slower?
> 
> 3) Can COMIS simulate more than one air network at a time? (e.g. a 
> semi-detached house where heat transfers through the party wall, but 
> the air flows in each house are not connected). If not, what would be 
> the best way to approach this semi-detached problem with the current 
> software?
> 
> 4) In tall atria (or other large spaces) it is useful to simulate 
> stratification effects by 'stacking' zones one on top of the other 
> vertically. Is COMIS able to simulate the air movement through these 
> large horizontal openings between the zones? If not, what is the 
> recommendation for simulating a large stratified space?
> 
> Thanks in advance
> David.
> 
> 
> 
> 
> 
> 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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