120 degree azimuth [RE-wrenches]

Darryl Thayer daryl_solar at yahoo.com
Wed Dec 20 09:09:53 PST 2006


Steve I would feel good about the orentation, most of
the energy is in the summer and the sun is very high
in the sky.  Your winter performance would be most
affected and if you are like Minnesota we are very
clouldy in the winter.
Darryl
BTW do you have a solar radiation measuring tool? if
so where did you get it, and do you like it?

--- Steve Johnson <stevejohnson at comcast.net> wrote:

> 
> Wrenchisimos,
> 
> I have a customer that has asked me to design/price
> a 22kw system for a 
> hotel.  The back of the roof is about 26 degrees
> tilt but facing 120 
> degrees, 60 degrees off of due south.  I ran the
> numbers on PV Watts and 
> it showed only a 7.6% loss of power. 
> 
> Can anyone comment from experience on an
> installation 60 degrees to the 
> east of south?  I don't want to make a poor
> recommendation.  Because of 
> the site layout there is very little possibility of
> a canopy/parking 
> type installation which is what I would like to do.
> the roof is ideal otherwise.
> 
> Steve Johnson
> LightWave Electric
> Nashville, Tennessee
> 
> 
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