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Sunlight exposure spec for outdoor elec enclosures

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Tunalover

Mechanical
Mar 28, 2002
1,179
Folks-
I posted this under HEAT TRANSFER/THERMO a few weeks back with no responses. I'm looking for a spec that has to do with sunlight exposure on outdoor electronic equipment enclosures.

The spec, from BellCore or maybe ASHRAE, deals with the percentage of the normal solar load to apply to the outer surfaces for design purposes.

I recall that the fractions were:

100% for surfaces normal to, and facing the sun e.g. "top" surfaces
50% for vertical surfaces normal to the "top" surfaces
0% for bottom surfaces (shaded)

Thanks in advance for your help on this. I remembered what was most important but forgot where I got the information!

Tunalover
 
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