Re: [EnergyPlus_Support] Simulation of 12th century chapel in Ireland

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

 The convergence issue for 1.5m thick masonry is a real issue.  That is 
stretching the limits of what the CTF methodology can do.  You might also try 
the conduction finite-difference model.  I do not know what other issues there 
may be.  

I would be reluctant to use energy simulation alone to assess the likelihood of 
condensation on the walls.  I would seek other tools or experience to confirm 
the results.  

Since this is a general modeling question, you may with to post it on bldg-sim 
also.  For information on bldg-sim, see:
http://www.gard.com/ml/bldg-sim.htm

Mike


On 25 Apr 2007 at 19:58, ooodard wrote:

> Does anyone have any comments to make concerning likely problems in 
> simulating a single or two room 12th century romaneque chapel.  The 
> walls are up to 1.5m thick. Heavy stone masonry everywhere.  I have 
> read comments about making sure the warm-up period is long enough to 
> get convergence..
> 
> We can get reasonable modelling of ventilation because we can do a 
> pressure test to measure air leakage paths.  Our main interest is in 
> surface condensation and on using strategically controlled mechanical 
> ventilation and may be limited heating.  There are 12th century 
> paintings on the walls of said chapel which are decaying.
> 
> (Ref. "A climate control system for Hollybourne Cottage, Jekyll Island 
> Historic District, Georgia, S. Maekawa & F. Toledo,  at 
> http://www.getty.edu/conservation/publications/pdf_publications/plea.pdf
> )
> 
> This is going to be an interesting project.  Maybe we would be wasting 
> our time trying to model such a building.
> 
> Thanks.
> 
> Odard
> 
> 
> 
> 
> 
> 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.pdf under the
> Documentation link and press the "search" button.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 


========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
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 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.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:
    mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    mailto: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/