NFPA Journal - May/June 2017 - 88
BOSTON 2017
Conference & Expo
NEW REFRIGERANTS
Freezer
Burn
L
ike a suitor spurned over and over in love,
the refrigeration and air conditioning
industries can't seem to find a good partner.
While the mechanics of these indispensible
technologies have been stable for decades,
the substances that circulate through them
absorbing heat and cooling the air-aptly
named refrigerants-keep finding ways to foul
things up.
A litany of refrigerants have been tried and
left behind since commercial refrigeration
began more than a century ago. Some were
too toxic, others too flammable; some weren't
effective in certain climates, while some were
environmentally ruinous. Each time a fatal
flaw was revealed, the industry mobilized to
find a replacement. Now that cycle is beginning again-this time with potentially serious
implications for fire protection.
88 | NFPA JOURNAL * M A Y / J U N E 2 0 1 7
Last October, nearly 200 nations, including
the United States, agreed to a relatively rapid
phase down of a group of chemical compounds
called hydrofluorocarbons, or HFCs, which, in
addition to being the most widely used refrigerants in the world over the past two decades,
are powerful greenhouse gases with thousands
of times more global-warming potential than
carbon dioxide. As a result, the Environmental
Protection Agency (EPA), which is in charge
of the phase out, has begun listing certain
HFC refrigerants as unacceptable for use. The
phase-out dates vary by chemical and application, but many common HFCs used in retail
food refrigeration will be prohibited in new
systems beginning January 1, 2021, and in
air-conditioning systems by 2024.
As researchers look for suitable replacements, the prospects are complicated.
GUTTER CREDIT
A phase-out of environmentally damaging chemicals
means that most refrigerators, freezers, and air
conditioners may soon be using flammable refrigerants.
Are we ready? By Jesse Roman
Table of Contents for the Digital Edition of NFPA Journal - May/June 2017
Contents
NFPA Journal - May/June 2017 - Cover1
NFPA Journal - May/June 2017 - Cover2
NFPA Journal - May/June 2017 - 1
NFPA Journal - May/June 2017 - Contents
NFPA Journal - May/June 2017 - 3
NFPA Journal - May/June 2017 - 4
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NFPA Journal - May/June 2017 - I1
NFPA Journal - May/June 2017 - I2
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NFPA Journal - May/June 2017 - Cover3
NFPA Journal - May/June 2017 - Cover4
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