Re: [EnergyPlus_Support] EnergyPlus Construction documentation question

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

Sorry, the list of valid window layers hasn't kept up with some of 
the new object types.  Valid window layers are:

MATERIAL:WINDOWGLASS
MATERIAL:WINDOWGLASS:AltInput
MATERIAL:WINDOWGAS
MATERIAL:WINDOWGASMIXTURE
MATERIAL:WINDOWSHADE
MATERIAL:WINDOWBLIND

Page 70 of the Input/Output reference lists the following rules for 
window constructions:

"The gap between the inside glass layer (layer #3) and the shading 
layer is not entered.  A maximum of four glass layers and one shading 
layer is allowed. If there is a shading layer, it must be the first 
or last layer (no between-pane shading devices!).  A gas layer must 
always separate adjacent glass layers in a multi-pane glazing."

Also, it would not be valid to put two gas layers adjacent to each 
other, because the resistance of a gas layer is dependent upon the 
thickness of the gap. The resistance of two 1cm gaps is not 
necessarily the same as the resistance of a 2cm gap.

Mike





On 25 Oct 2002, at 7:19, TangoJim wrote:

> For constructing a glazing assembly, the documentation
> indicates that the following E+ commands can be used
> for defining the layers: Material:WindowGlass,
> Material:WindowGas and Material:WindowShade.
> 
> Questions
> 
> 1) Can Material:GasMixture be used for a layer?
> 
> 2) Can Material:WindowGlassAlt be used for a layer?
> 
> 3) Are there any rules like: two solid glazing
> materials cannot be next to each other, two gas
> materials cannot be next to each other, and Window
> Shading materials must be either on the outside layer
> or the inside layer?
> 
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