ASHRAE Journal - April 2020 - 58

ASHRAE - CELEBRATING 125 YEARS

FIGURE 5 Oil-free vs. oiled chiller system diagram comparison.

Oil Free Chiller

IMAGE: DANFOSS

Traditional Oiled Chiller

Fortunately, they were right. But success and industry transformation were not immediate. It took several
years from that first compressor installation, before
industry adoption and resulting volume drove a profitable business. Industry adoption ultimately required
expansion to four different platforms and integration
in the portfolio of several OEM chiller manufacturers,
including a related chiller OEM startup investment.
Success ultimately required working to develop product
with several innovative early adopter OEMs, including
small and large, from all regions.
These equipment manufacturers have learned that
it's not a single technology benefit that any one end
customer values for any specific application; it's not all
about efficiency or low sound level or the small physical footprint or the ability to maintain the high performance over time. It's some combination of those and
ultimately any of them can be critical.
For example, if the application is replacing an old
chiller in a small/crowded equipment room which
is adjacent to an auditorium or operating room, the
technology footprint and sound level benefits are paramount. In cases such as this, efficiency may not even
ASHRAE JOURNAL

ashrae.org

Developing
Countries
EU

The Long Road to Success

58

FIGURE 6 Montreal Protocol High-GWP refrigerant phasedown chart, in terms of
CO2 equivalent emissions.

APRI L 2020

U.S. and Other
Developed
Countries

Baseline % in CO2, Equivalent Tons

be a consideration. They have in-turn recognized from
this realization, the opportunity to optimize equipment
designs and derivatives of them to take advantage of
these benefits / combination of benefits.

Recent History
One of the main drivers for the original compressor
development was the phaseout of ozone-depleting substances under the Montreal Protocol and the perception
that a compliant solution was needed quickly to help
customers meet the requirements. Now we are amid
the industry phasing out high global warming potential
substances. Europe is the first to move globally with this
phaseout, implementing the F-Gas regulations with the

IMAGE: DANFOSS REFRIGERANTS WHITE PAPER-REFRIGERANT OPTIONS NOW AND
IN THE FUTURE

30%-50% efficiency benefit which it enables relative to
the positive displacement constant speed compressor
technology it would replace would grow in importance
to an increasing portion of the market.


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ASHRAE Journal - April 2020

Table of Contents for the Digital Edition of ASHRAE Journal - April 2020

Contents
ASHRAE Journal - April 2020 - Intro
ASHRAE Journal - April 2020 - Cover1
ASHRAE Journal - April 2020 - Cover2
ASHRAE Journal - April 2020 - 1
ASHRAE Journal - April 2020 - Contents
ASHRAE Journal - April 2020 - 3
ASHRAE Journal - April 2020 - 4
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ASHRAE Journal - April 2020 - Cover3
ASHRAE Journal - April 2020 - Cover4
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