ASHRAE Journal - September 2019 - 50

TECHNOLOGY UPDATE

Achieving Resiliency in
The Cold Chain: Strategies
To Maintain Food Safety
BY MARY KATE MCGOWAN, ASSOCIATE EDITOR, NEWS

Ensuring food security during natural disasters, loss-of-power events or refrigeration equipment malfunctions calls for more than hoarding milk and bread. Whether
grocery stores and the broader supply chain for cold products lose power momentarily, for hours during demand response events enforced by the local utility, or for
days after a hurricane tears through town, maintaining stable temperatures to keep
food safe is vital for everyday life and during emergencies.
Thermal energy storage in the low-temperature cold
chain provides both temperature stability to protect
food from temperature fluctuations during daily operations and during a catastrophic loss of power. There
are multiple strategies to achieve resilience in the cold
chain and different viewpoints of what works best.
Damon Vance, marketing director at Viking Cold
Solutions, said TES improves resiliency and supports the
cold chain in several key areas:
* Improving refrigeration system efficiency while
minimizing temperature fluctuations during normal
daily operations;
* Minimizing the risk to the food from temperature
fluctuations while enabling power management of the
facility; and
* Extending the protection for products during
events such as equipment failure or power outages
caused by hurricanes, wildfires or other extreme events.
"Resiliency in the cold chain refers to a facility's ability to withstand and recover from several factors, and
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thermal energy storage can help improve resiliency for
all of them," Vance said.
Thermal storage is a broad umbrella for a lot of different technologies, and applications range from supplying
air-conditioning to refrigeration to pre-cooling to heating to power generation.
"Each solution/end application has a lot of nuances,
so I think it's important to consult with folks that have
worked in the end-user application that you're looking
into," said John Lerch, vice president of sales and marketing for Axiom Exergy.
Resiliency in cold chain application is critical.
Refrigeration systems operate 24-hours-a-day sevendays-a-week. Situations that call for adapting operation
strategies can happen at any time and vary in predictability and length of time.
Thermal storage systems inherently provide some
resiliency protection, and the systems can add features to increase their resiliency protection, said
Lerch. Thermal systems can play three major roles


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ASHRAE Journal - September 2019

Table of Contents for the Digital Edition of ASHRAE Journal - September 2019

Contents
ASHRAE Journal - September 2019 - Intro
ASHRAE Journal - September 2019 - Cover1
ASHRAE Journal - September 2019 - Cover2
ASHRAE Journal - September 2019 - 1
ASHRAE Journal - September 2019 - Contents
ASHRAE Journal - September 2019 - 3
ASHRAE Journal - September 2019 - 4
ASHRAE Journal - September 2019 - 5
ASHRAE Journal - September 2019 - 6
ASHRAE Journal - September 2019 - 7
ASHRAE Journal - September 2019 - 8
ASHRAE Journal - September 2019 - 9
ASHRAE Journal - September 2019 - 10
ASHRAE Journal - September 2019 - 11
ASHRAE Journal - September 2019 - 12
ASHRAE Journal - September 2019 - 13
ASHRAE Journal - September 2019 - 14
ASHRAE Journal - September 2019 - 15
ASHRAE Journal - September 2019 - 16
ASHRAE Journal - September 2019 - 17
ASHRAE Journal - September 2019 - 18
ASHRAE Journal - September 2019 - 19
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ASHRAE Journal - September 2019 - 36
ASHRAE Journal - September 2019 - 37
ASHRAE Journal - September 2019 - 38
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ASHRAE Journal - September 2019 - 49
ASHRAE Journal - September 2019 - 50
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ASHRAE Journal - September 2019 - Cover3
ASHRAE Journal - September 2019 - Cover4
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