I think modules have uneven heating whenever snow is melting off,
with some of the module covered with frozen snow and adjacent
portions of the module exposed to direct sunlight.
At 03:53 PM 1/3/2013, you wrote:
With heat tape I'd be worried about uneven heating of the module
surface and possible cracking.
I have toyed with the idea of running a length of 2" or 3" conduit
under the bottom of the modules on my shop roof. It would be capped
on the end and have 3/8" holes drilled in it every foot. It would
lead inside the building to a simple blower on a timer. The heat
would be even and gentle.
I've noticed that if I can just clean off the bottom foot or so of
the array the heat gets up under the snow the whole mass comes down
on the first sunny day. An hour of warm air might jump start the process.
Hilton
--
Hilton Dier III
Renewable Energy Design
Partner, Solar Gain LLC
453 East Hill Rd.
Middlesex, VT 05602
_______________________________________________
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive:
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out participant bios:
www.members.re-wrenches.org
_______________________________________________
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out participant bios:
www.members.re-wrenches.org
