[GSBN] Decrement factor of SB walls

[Bohdan Dorniak]

Martin

The figures that I've heard bandied around Aussie is 15 - 16 degrees
centigrade.

So are you talking F or C??
Bohdan

Ausbale

 

From: GSBN-bounces at sustainablesources.com
[mailto:GSBN-bounces at sustainablesources.com] On Behalf Of martin hammer
Sent: Tuesday, 29 November 2011 8:36 AM
To: GSBN
Subject: [GSBN] Decrement factor of SB walls

 

Hello all,

Anyone know the "decrement factor" for straw bale walls?  I hadn't even
heard of this term until today.  It is defined as:  

The reduction in cyclical temperature on the inside surface compared to the
outside surface.

Thus, a material with a decrement value of 0.5 which experiences a 20 degree
diurnal variation in external surface temperature, would experience only a
10 degree variation in internal surface temperature.  Material thickness,
mass, and insulating properties are all factors.  

Any info on this is appreciated.


Martin Hammer 

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