[Strawbale] window/sill details

[Rob Tom]

On Thu, 05 Apr 2007 18:18:36 -0400, Jeff Ruppert <jeff at odiseanet.com>  
wrote:

> My opinion with regard to the turbulence and heatloss is that it is
> minimal.  Maybe someone will prove me wrong with hard numbers


Some numbers WRT still air and moving air...

The enginoids at ASHRAE tell us that:

================= * =======================================
STILL AIR  vertical surface, heat flow horizontal,
R = 0.68

MOVING AIR (any position)
15-mph wind, (winter) R = 0.17
7.5 mph wind (summer) R = 0.25

(units for "R"  =  (hr* ft^2 * degrees(Fahrenheit)) / Btu  )
================= * ==========================================
Source: ASHRAE Handbook of Fundamentals, Chapter of Design Heat  
Transmission Coefficients, table
for "Surface Conductances and Resistances for Air"
					*


=== * ===
Rob Tom
Kanata, Ontario, Canada
<A r c h i L o g i c   at  c h a f f y a h o o   dot   c a >
winnow the chaff from my edress in your reply