RE: [EnergyPlus_Support] Window blinds - conductance of shading layer in heat balance equations

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Subject: RE: [EnergyPlus_Support] Window blinds - conductance of shading layer in heat balance equations

From: "Griffith, Brent" <brent.griffith@xxxxxxxx>

Date: Thu, 16 Apr 2009 12:25:29 -0600

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Thread-topic: [EnergyPlus_Support] Window blinds - conductance of shading layer in heat balance equations

Blind layer conductance is calculated by dividing slat conductivity by slat thickness.

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of tboomgaert
Sent: Friday, April 10, 2009 4:13 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Window blinds - conductance of shading layer in heat balance equations

Hello,

In the Engineering Reference on p.228-230 (heat balance equations for shading device and adjacent glass), it states that shading devices are treated as a uniform layer with a conductance k_sh.

I was wondering how this k_sh is calculated for window blinds (with horizontal slats)? I can't seem to find anything on this in the engineering reference.

Thanks in advance!
Thomas

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