[RE-wrenches] Microfractures in PV Modules
William Dorsett
wmdorsett at sbcglobal.net
Sun Oct 5 03:36:20 PDT 2014
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
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