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RE: [EnergyPlus_Support] interior walls in a one zone model




There is some incorrect information here.  Walls that are ?Adiabatic? in EnergyPlus still store and release heat.  They have the same boundary conditions on both faces. When those conditions are varying, then heat will flow in and out of the wall and get stored and released in the thermal mass.   For a true adiabatic zone boundary, just omit the surface.   



From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Jeremiah Crossett
Sent: Friday, January 11, 2013 9:46 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] interior walls in a one zone model





Niko, 

Typically adiabatic walls are not used to account for thermal inertia, as they are are adiabatic their only function to end a zone at the point where it would meet another zone. For instance one might use an adiabatic surface if they wanted to do a shoebox model of a single zone separated from a larger building. 



The object that is designed to account for "thermal inertia" is called: "Internal Mass" and can be found in the "Thermal Zones and surfaces" section of idf editor.

Here is a what the inputs can look like:



Name Phase Change Internal Mass
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