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Re: [EnergyPlus_Support] Thermal mass effect




I don't have a good reference to offer, but I have some questions to ask:

1.  The obvious question - are you using Material:Regular so that there is 
actually mass present in the building?

2.  Have interior surfaces been described using internal mass or surface 
objects?

3.  In a "fully conditioned" building, mass effects tend to be small, because 
most of the mass is not changing temperature very much except during 
transitions to/from thermostat setback.  This is especially true if the 
building has a fairly large footprint and a large core to perimeter ratio.

4.  How are you quantifying the "thermal mass effect"?

Mike


On 1 Apr 2005, at 17:47, sm278424 wrote:

> 
> 
> In models I've been working with recently (of a fully air conditioned 
> office building), the thermal mass effect seems quite small.  
> 
> Can anyone suggest a good reference on this topic? 
> 
> Thanks
> Shaun
> 
> 
> 
> 
> 
> 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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