[RE-wrenches] Microfractures in PV Modules

[William Dorsett]

Does this suggest that it is better to buy monocrystalline cell modules
instead of poly; and that those modules that flash test with the highest
output for a given production run have the best printed connections and
therefore the higher probability of long term life and performance?

Bill Dorsett
Manhattan, KS

-----Original Message-----
From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On
Behalf Of Christopher Warfel
Sent: Saturday, October 04, 2014 10:21 AM
To: re-wrenches at lists.re-wrenches.org
Subject: [RE-wrenches] Microfractures in PV Modules

Recently a inspector raised the issue of microfractures in pv modules, and
that the existence of such fractures would require replacement of the
modules and a failing of the system inspection. I found information from
NREL confirming the existence of microfractures in poly crystalline.
However, I have not seen any information on how to detect them (ie, what
they look like).  Does anyone have a reference that shows this, and is this
a valid concern for the industry?  Thank you, Chris






--
Christopher Warfel, President
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
401-466-8978

_______________________________________________
List sponsored by Redwood Alliance

List Address: RE-wrenches at 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