Page 19 - Green Builder Sept-Oct 2016

ONE-FIFTH OF ALL energy consumption is used by
buildings,and nearly half of that consumption is used
to keep buildings cool, says Eric Werling, Building
America program director for the Department of
Energy (DOE). Because most Americans spend two-
thirds of their lives inside their homes, it’s important
to continue making those buildings and the systems inside them as
energy efficient—and healthy to live in—as possible.
The DOE’s Building America program was started more than two
decades ago to figure out ways to make homes more efficient without
increasing costs. Each year, Building America focuses on a few key
areas to study, with a goal of decreasing energy consumption by 50
percent. That goal has led to a number of new building codes, systems
and processes for high-performance building.
For the first time, Building America recently published its goals
for key areas of focus. “We got to the point where the program has
been around, and we’ve made great strides in a lot of areas,” Werling
says. “But there are still a lot of remaining challenges in those areas,
so we decided we need to get more strategic.”
In 2015, Building America published its Research-to-Market Plan,
which illustrates three common problems in high-performance
building. Solutions to those problems are detailed in roadmaps.
Each roadmap contains plans for research and development, market
Ventilation and envelopes. Building America has focused on ventilation and envelope issues for many years. This year, the
program has narrowed its focus to three key areas.
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engagement, and codes and standards. The roadmaps dictate Building
America’s areas of focus during the next few years and determines
where money will be allocated for research and development. The
current roadmaps focus on the following areas:
1. High-Performance, Moisture-Managed Envelope Solutions
2. Optimal Comfort Systems for Low-Load Homes
3. Optimal Ventilation and IAQ Solutions
“It’s a much more strategic plan for finishing the job of getting
high-performance homes to be standard practice,” Werling says.
“Our roadmaps are not just designed specifically around technical
challenges, but also market challenges.”
Envelope Solutions
A tight building envelope, standard practice in high-performance
building, is key to reducing energy loss inside a home. However, a
tight envelope presents a new problem: the inability of moisture
that occurs inside a home to escape. In response, Home Innovation
Research Labs, one of Building America’s research teams, is
working to develop new insulation systems that can manage
moisture and prevent heat loss or gain. Currently, Home Innovation
Research Labs is working on three projects related to attics and
continuous insulation, and is about to begin working on a fourth
project on windows.
CREDIT: BUILDING AMERICA’S RESEARCH-TO-MARKET PLAN
September/October 2016 GREEN BUILDER 17