Hi Jason, What are you seeing in terms of measurements?
Temp air/module Voc Irradiance Etc Jay Peltz power > On Nov 2, 2020, at 8:18 AM, Jason Kechijian <sol...@me.com> wrote: > > Hey wrenches, > > Does anyone have any guidance to which values to use when testing open > circuit voltage on bi-facial modules, considering you take the temperature > reading from the cell vs. the back sheet? Also, what would be the correct > module Voc to use since there are values for both the front and back? > > 405W Module: Front/Back > Pmpp: 405 / 285 > Vmpp: 40.89 / 41.10 > Impp: 9.91 / 6.94 > Voc: 48.42 / 46.99 > Isc: 10.38 / 7.28 > Module efficiency: 19.7% / 13.9% > Temp coefficient Pmpp: -0.3528%/ºC > Temp coefficient Isc: +0.0400%/ºC > Temp coefficient Voc: -0.2769%/ºC > Nominal: 44+/-2ºC > > I was using the front Voc and Voc temp coefficient, but I am getting some > results which are not in line with the 5% of expected. > > Jason D. Kechijian, LEED AP > NABCEP Certified PV Installation Professional™ > > > > _______________________________________________ > 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 > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > _______________________________________________ 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 There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
