Re: [EnergyPlus_Support] Thermal mass

[Linda Lawrie <linda@xxxxxxxxxx>]

At 06:07 AM 5/24/2004, mby wrote:
>What is meaning meaning of non-thermal mass walls and
>thermal mass walls in EnergyPlus? Are thermal mass
>walls supposed to simulate only furniture? I  can not
>find an example idf file for my problem I want to
>solve. Namely, I would like that my external walls
>have thermal mass. Can you direct me to some idf
>example?

"Non-thermal mass walls" would be those described with all layers (or only 
one layer) using "Material:R" materials -- i.e. described only by 
resistance.  All other walls will have inherent "thermal mass" (i.e., 
described with L,Cp,K,D characteristics).

"Internal Mass" walls should be described with the normal characteristics 
(i.e., L,Cp,K,D) so that the mass of the item(s) do interact with the heat 
balance solution.  Internal mass could be used for internal partitions, 
furniture, other items that may affect the thermal balance.

Virtually all of the sample files have exterior surfaces described with 
thermal mass.


Linda

EnergyPlus WebSite: http://www.energyplus.gov
Owner: EnergyPlus_Support list
Member: EnergyPlus Development Team



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