Research and Technology Block Get NFRC Virtual
July 19, 2010
The National Fenestration Rating Council's (NFRC) first ever "virtual
meeting" is currently underway. Sessions began earlier today
with the Research and Technology Committee Block, which is chaired
by Werner Lichtenberger of Truseal Technologies. A number of task
groups provided updates on their various activities throughout the
course of the meeting.
The Research Subcommittee, chaired by Bipin Shah of WinBuild, Inc.,
was the first of today's sessions. Joe Hayden with Pella gave an
update on the Window 6/THERM 6 validation research project, which
he said has been progressing. He expects completion and a final
report by the fall 2010 meeting. Willie duPont with Sunergy also
gave a status report on the validation features of the new software
feature of Window 6/THERM 6, which are currently under development
with new capabilities.
duPont said they are working to perform and coordinate data collection
to validate the new features. He said they've performed 26 tests
for solar heat gain and 20 tests for U-factor and are now performing
Also during the meeting Lichtenberger provided an update on the
gas permeability research project, an IGMA project that NFRC is
co-sponsoring. There are two phases left to the project. A task
group will work on developing a test specification under the supervision
of the IGMA technical services committee. The last phase of the
project will be writing the specification.
In addition, Steve Strawn from Jeld-Wen updated the group on the
ventilation rating project. The intent of this task group is to
develop a standard method so that net clear openings are all calculated
the same way. The group had created a revised scope during a July
9 meeting, which was approved during today's subcommittee meeting.
The Optical Properties Subcommittee, chaired by Sneh Kumar with
Traco, also took place today. Mike Rubin with Lawrence Berkeley
National (LBNL) gave a report on some of the priorities of the optical
properties task group. These include inter-laboratory comparisons
(ILC) for specular glazing materials; research and standards for
diffused glazing and shading materials; laminates with embedded
coatings; and validation of emissometers; among others.
In addition, Rubin provided an update on the status on international
standards. Regarding solar optical standards, he said EN 140 and
ISO 9050 are being revised and ASTM E903 is being reinstated and
revised. He also said that they are trying to harmonize with the
Chinese standards and will be having a meeting on this in August
Also during Optical Properties, Mudit Saxena with Heschong Mahone
Group and Roger LeBrun with Velux talked about the activities of
the Daylighting Rating task group, which is working on a daylighting
ratings project. Saxena said the project is split into two phases;
phase one will focus on residential and light commercial, while
phase two will be for commercial projects. The purpose of phase
one, Saxena explained, is to compare products' daylighting potential;
determine total lumens getting into the space; and to show the value
of daylighting for energy efficiency and human factors.
On the other hand, phase two will provide designers and energy
consultants with more details about transmitted luminous flux distribution
of fenestration products.
"The information can then be used by energy consultants to
estimate daylighting energy savings potential," said Saxena.
The Thermophysical Properties subcommittee, chaired by Charlie
Curcija with Carli Inc., was the last subcommittee to meet as part
of the Research and Technology committee. Ray McGowan, NFRC staff
liaison, reported on the thermophysical property manufacturer specific
submissions and also gave the thermophysical properties ILC update.
Regarding the submissions, he said since April they have received
14 new material submissions, and they continue to receive more.
Two reviews have been put out and he hopes to have a document completed
next week. On the thermophysical properties ILC update, McGowan
said he is working to pull the completed report together and should
be able to have it out for review within the next couple of months.
All of the preliminary results, he said, were within two standard
The NFRC's meetings continue this afternoon and run through the
board meeting on Wednesday. Stay tuned to USGNN.com for more
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