Meetings Open Second Day of NFRC Fall Meeting
Day two of the National Fenestration Rating Council's Fall meeting
is currently underway in Jacksonville, Fla. The sessions began this
morning with subcommittees of the Research & Technology Committee
meeting to discuss research projects and ballots.
the Research Subcommittee meeting the group heard progress reports
on a number of activities currently in the works. Regarding the
condensation resistance procedure for the Component Modeling Approach
(CMA), Charlie Curcija from Carli Inc. reported that he anticipated
having a report for review by the end of November, followed by a
conference call and then completion some time in December.
Willie DuPont of Sunergy Consulting reported on the Window 6 and
Therm 6 validation research. He explained that the software programs
now have new capabilities for calculating solar heat gain coefficient
(SHGC) and U-factor for glazing products that cannot currently be
modeled or simulated, including fritted glass. The first part of
the research task is to compile and evaluate existing SHGC and U-factor
test results and compare physical testing against simulated testing
based upon the new software.
the Optical Properties Subcommittee the group reviewed NFRC 300
and 301 ballot negatives. One negative in particular, which saw
a bit of discussion stated that the inclusion of ASTM G197 in Section
7.2.5 represented "the first step in adopting a new spectral
weighting function into NFRC's programs that may significantly increase
SHGC and VT ratings
Joe Hayden of Pella Corp. spoke up and said, "This is big.
If approved is the Department of Energy prepared to adjust Energy
Star criteria accordingly?" Hayden made a motion that the negative
be found persuasive and substantive and recommended that the implementation
of NFRC 300 be delayed until at least April 1, 2009. The ballot
will now go back to the task group and will be re-balloted.
Meetings continue this afternoon with the Technical Committee block.
This includes the Software Subcommittee, which will be reviewing
the CMA software tool.
Tune into USGNN.com tomorrow for more news and updates from
the NFRC fall meeting.
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