ASHRAE Journal - September 2023 - 6

INDUSTRY NEWS
2023 ASHRAE-UNEP Lower GWP Refrigeration
And Air-Conditioning Innovation Awards
ASHRAE and UN Environment Programme (UNEP)
have announced project selections for the 2023
ASHRAE-UNEP OzonAction Lower-GWP Refrigeration
and Air-Conditioning Innovation Awards. The award
promotes innovative technology developed by teams
based in developing countries to minimize the use of
higher global warming potential (GWP) refrigerants
through refrigeration and air-conditioning applications.
" When it comes to life-cycle carbon emissions
for air-conditioning and refrigeration equipment,
high GWP refrigerant emissions rank second only to
system energy use, " said Bill McQuade, P.E., Fellow
ASHRAE, ASHRAE Treasurer. " Over the next decade,
as the electric grid becomes 'greener' with renewable
sources, the transition to low GWP refrigerants will
become essential to meeting our decarbonization
goals. This award celebrates the significant
contributions these individuals have made toward a
net zero emissions future. " The four projects selected
are showcased here:
HC-290 (Propane) as an Alternative Refrigerant in
Commercial Applications
This cold store project used HC-290 as an alternative
refrigerant in commercial applications, resulting
in a 36% reduction in energy consumption and a
41% decrease in total equivalent CO2 emissions. The
project also strengthened local technical capacity
and provided inputs for updating regulations
on flammable refrigerants. A flammability risk
assessment was performed following the refrigeration
safety standard (EN-378) and the explosive
atmospheres standard (EN-1127-1) to identify possible
sources of ignition and then implement actions
to eliminate those potential sources of ignition,
including the use of HC-290 sensors.
Project Team: Rodrigo Serpa, Fernando Del Castillo, Omarly
Acevedo and Ana Correa (Ecuador)
Flammable Refrigerant Use in a Draft Beer Machine
A new heat exchanger composition for draft beer
machines was developed by this team, allowing for
the use of flammable refrigerants and improving
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cooling efficiency. The new design reduces the
refrigerant charge, eliminates oil accumulation
issues and enhances heat exchange between fluids
and the intermediate material. The project achieved
lower energy consumption and CO2 emissions while
maintaining the size and usability of the equipment.
Project Team: Eduardo Arjona Esteves, Lucas Cavalin,
Roberto Cavalin, David Fernando Marcucci Pico, Davi Telles
and Enio Pedone Bandarra Filho (Brazil)
Ammonia Use in Multipurpose Cold Storage
The project is a multipurpose cold storage using
a low-charge DX ammonia system with air-cooled
condensers and electronic expansion valves, a first
of its kind in India. This system allows for the storage
of perishable produce in both chilled and frozen
conditions, offering flexibility and economic viability.
The project had a positive environmental impact while
reducing water and energy consumption through the
use of adiabatic precooling systems.
Project Team: Harshal Surange and Arvind Surange (India)
Propane Chiller Use in a Convenience Store
This team developed a modular low-charge
refrigerant chiller using propane as a replacement for
HCFC in Brazilian commercial facilities. Innovative
features included a centralized control system,
capacity control by mass flow variation and the use
of low internal volume evaporators and condensers
to minimize refrigerant charge. The modular system
allows for easy replacement of faulty equipment
and eliminates the need for field maintenance. The
adoption of a control and pumping unit separate from
cooling modules enhanced safety since all electrical
power and control parts were separated from the
propane circulation environment, thus avoiding
possible generation problems.
Project Team: Fernando Sayols Marchioro, Éder Paluch and
Elielton Polityto (Brazil)
For more information on the 2023 ASHRAE-UNEP Lower GWP Refrigeration and
Air-Conditioning Innovation Award, selection criteria, judging and how to submit
your own project for the 2025 award, please visit https://tinyurl.com/4ve9ej2b or
ashrae.org/lowerGWP
https://tinyurl.com/4ve9ej2b http://www.ashrae.org/lowerGWP http://www.ashrae.org
ASHRAE Journal - September 2023

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