Summer Meeting Continues with Research and Technology Reports
The National Fenestration Rating Council's (NFRC) summer meeting
continued yesterday in Minneapolis.
The morning began with comments about the new thermal comfort rating
task group, which is chaired by Jim Larsen of Cardinal Glass Inc.
The NFRC board had approved a thermal comfort rating research project
at its spring meeting, and the task group was then formed to develop
a board recommendation for further consideration of the project
findings. At the current meeting, however, discussion was held about
whether or not the creation of a thermal comfort rating really fell
within the scope of the NFRC, as well as how the group should be
organized to proceed.
"Our discussion here today is do we want to pursue a rating,"
said Larsen. "Using a statistical basis, can we come up with
a measure where the bulk of the population is comfortable?"
At the end of the discussion, a motion was passed to maintain the
task group under the technical committee to investigate a thermal
The research and technology committee meeting began next with reports
from the long-term energy performance subcommittee. Margaret Webb
with the Insulating Glass Manufacturers Alliance (IGMA) presented
information about insulating glass (IG) certification. The group
has proposed a goal of having all ENERGY STAR®-rated products
to also include IG certification.
Webb explained that IG product lines would be certified for durability,
as the durability of the units leads, in turn, to reduced energy
usage and increased probability of remaining energy-efficient "over
the long haul."
Richard Karney with the U.S. Department of Energy acknowledged that
he had received the report from Webb and stated that, although he
had a few questions remaining, he "feels this is the way to
The optical properties subcommittee heard discussion on, among other
topics, the ballot to add Optics 5 to the list of approved NFRC
simulation computer software programs, in accordance with the stand-alone
document "Creating a Laminate in Optics for NFRC." The
subcommittee voted to move the "Laminate in Optics" procedure
forward to the research and technology committee and to add Optics
to the list of approved software, implementation immediately following
staff training of simulators and IAs (Independent Certification
and Inspection Agencies). Later in the day, the research and technology
committee voted to put this before the board of directors.
The research subcommittee heard several reports and much debate
on new business.
Charlie Curcija with CARLI Inc. addressed the ballots on the "Condensation
Resistance Procedure for the Non-Residential Component Modeling
One point brought up by the subcommittee was the correlation between
the NFRC's condensation-resistance (CR) number and the American
Architectural Manufacturers Association's condensation resistance
factor (CRF). By shifting the order of some items in the document,
the subcommittee resolved to first study CR and then potentially
look into its correlation with CRF.
The "Development of Visible Transmittance Procedures for Complex
Products" request for proposal (RFP) also generated detailed
discussion, since this proposal would lead to a laboratory's creation
of testing equipment for the project. The question was asked where
the test apparatus would go once the research was complete-if funded
by the NFRC, the argument said the equipment should go to the council
rather than the participating lab.
"In the bid process that [ownership of the equipment] will
resolve itself," said David DeBlock of ODL Inc.
Today's meetings continue with reports to the technical committee
and the ratings committee. Considerable discussions during the ratings
session are likely, as participants are expected to review responses
to the recent balloting of the draft Component Modeling Approach
(CMA) (formerly called Component Based) Product Certification Program.
Balloting resulted in six approvals, one approval with comment,
19 negatives and 17 abstentions.
The meeting continues through Thursday, July 27.