Hi: I went to do some training at a large utility scale site, (22MW) in Imperial Valley California a few years ago and was curious about how hot the modules were. So, I touched the back side of loaded and unloaded modules.
The loaded modules were cooler. Not what I expected. I thought the current flow of 9A would cause heating, but on further thought from a physics point of view it makes sense. Electrons carry 60% of the heat flow in metals which removes some heat and the cells are also converting and thereby removing about 15% of the solar energy from the cells. https://www.google.ca/maps/place/Slab+City,+CA+92233,+USA/@33.2450229,-115.4978262,1395m/data=!3m1!1e3!4m2!3m1!1s0x80d0b20527ca5ebf:0xa7f292448cbd1988 JARMO _____________________________________________________________________________________ Jarmo Venalainen | Schneider Electric | Solar Business | CANADA | Training & Development Specialist - Senior Phone: +604-422-2528 | Fax: +604-420-1591 | Mobile: +604-505-0291 Email: jarmo.venalai...@schneider-electric.com | Site: www.SEsolar.com | Address: 3700 Gilmore Way, Burnaby, BC V5G4M1 *** Please consider the environment before printing this e-mail From: Mark Frye <ma...@berkeleysolar.com> To: RE-wrenches <re-wrenches@lists.re-wrenches.org>, Date: 09/10/2014 08:43 PM Subject: [RE-wrenches] Cooler Modules Sent by: "RE-wrenches" <re-wrenches-boun...@lists.re-wrenches.org> Folks, Two identical PV modules are mount in an identical fashion and exposed to identical irradiance. One module is open circuit. The other is connected to a load and producing power. Is there a difference in the temperature of the two modules? If so, which one is cooler? Mark Frye Berkeley Solar Electric Systems _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. ______________________________________________________________________
_______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org