Specialty Fabrics Review December 2021 - 44

MAKING TENTS
THERMALLY EFFICIENT
Spending a summer's day or a wintery
night inside a tent will quickly
convince one that most tents are
thermally inefficient, if not outright
uncomfortable. Eureka! Expeditionary
Systems, a division of Binghamton,
N.Y.-based Johnson Outdoors Gear
Inc., is meeting the challenge of
making military tents both more
comfortable and thermally efficient.
As posted on Eureka!'s website,
Eureka! developed its thermal tent liners for rapid deployment
at military forward operating bases.
according to Navy SBIR N103-193,
generators that power environmental
control units (ECUs) to heat and cool
expeditionary shelters account for 75
to 80 percent of the total fuel usage of
the U.S. military's forward operating
bases. This requires convoys of fuel
tanks, often in dangerous territory, in
order to keep the tents comfortable.
In 2010, Eureka! partnered with
the R&D lab at the U.S. Army Natick
Soldier Research, Development and
Engineering Center (NRSDEC) to
develop a better insulation system
for its rapid deployment tents.
" The point is that the system needs
to be expeditionary in nature, able to
be put up and taken down quickly, "
explains Trent Nelson, senior mechanical
design engineer for Eureka! Military,
Johnson Outdoors. " It has to be
light and fast. Regular insulation is too
heavy, and inflatables are too difficult. "
The company worked with
The Eureka! thermal tent liner traps air inside reflective fabrics.
Photos: Johnson Outdoors-Eureka! Expeditionary Systems.
students at Binghamton University,
the State University of New York, to
develop 3D models for testing. The key
discovery was that air, captured and
confined inside a laminated reflective
liner, is the best insulator.
Tested under challenging
conditions, the resulting thermal
system maintains an ambient tent
temperature at mid-70s (F), with
a fuel savings of 30 to 38 percent,
44 SPECIALTY FABRICS REVIEW / December 2021

Specialty Fabrics Review December 2021

Table of Contents for the Digital Edition of Specialty Fabrics Review December 2021

Specialty Fabrics Review December 2021 - Cover1
Specialty Fabrics Review December 2021 - Cover2
Specialty Fabrics Review December 2021 - 1
Specialty Fabrics Review December 2021 - 2
Specialty Fabrics Review December 2021 - 3
Specialty Fabrics Review December 2021 - 4
Specialty Fabrics Review December 2021 - 5
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Specialty Fabrics Review December 2021 - 7
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