Has any one tried insulating the back side of the solar module? I know
normally that would be a really bad idea, but if the system was over
designed in the summer, and flat on the wall, you could get away with
it. That dark surface under the glass with 2" of foam board backing
would probably get warm enough to shed at least some of the build up,
when the sun came out. I've seen solar thermal systems go to almost 300
degrees F with air temps below freezing.
Ray Walters
Remote Solar
303 505-8760
On 12/1/18 4:27 PM, Michael Morningstar wrote:
Bill,
I’ve installed dozens of mountain top systems starting just North of
you, and spreading from the coast to the Nevada border and up into
Central Oregon. Fire lookouts, Repeaters, Cell towers, ect…. Cascade
and Coastal Cement. I count on arrays at 60 degrees getting entombed
in snow and ice for weeks. I’ve seen the walls of most buildings
encased in ice too! Lookouts get shut down for six months, and maybe
minimal loads stay on, like weather equipment. When full time power is
required, then propane or diesel generators and room heaters are
installed, often tandem generators that alternate usage and act as
backups. Many of my previous customers required a rapid response if
there was a power failure and that meant serious adventure. I’m kind
of over it now, many of those clients technicians also take care of
the power end of things.
Michael
On Dec 1, 2018, at 2:18 PM, Sam Haraldson <s...@onsiteenergyinc.com
<mailto:s...@onsiteenergyinc.com>> wrote:
However, even if vertical, will Sierra snow (its a special breed)
still
wind-pack on, stay for weeks, days, not at all? This site is on the
Pacific crest at 7,000 ft.
Yes, the "Sierra cement" is not the same as the "cold smoke" snow we
get in my part of the country but I see that snow tends to pretty
easily slough off arrays that are at and above the 35 deg angle.
Even the wettest Sierra stuff sure doesn't seem like it could stick
to glass at a 90 degree angle. I suspect you could get away with 60
deg, have better production, and still shed the snow.
--
Sam Haraldson, Installation Manager
onsiteenergyinc.com <http://onsiteenergyinc.com/>
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