Unisolar Roofing [RE-wrenches]

[hugh piggott]

<x-flowed>>From:	William Miller[SMTP:wrmiller at slonet.org]
>Also, does anyone know if there is a program available to calculate the
>efficiency of a PV array oriented away from true south at various
>declinations?

Tilting east and west is interesting because it creates a 'phase 
shift' in the diurnal power cycle, plus a small amount of effective 
shading, evening or morning.  If you have a building with pitched 
roof whose ridge runs north-south, you can spread the peak slightly, 
by splitting the pv panels between the two roof orientations.  This 
leads to a more constant power production with a slightly lower 
overall power peak.
-- 
Hugh

Scoraig, Scotland
http://www.scoraigwind.co.uk

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