Cold Link Africa January / February 2020 | Page 29

ASSOCIATIONS
INCORPORATING COLD CHAIN
ASHRAE and CESA
sign MoU
By Ntsako Khosa
S
igned in November 2019 at the Consulting
Engineers South Africa (CESA) head office in
Sandton, CESA CEO, Chris Campbell, stated
that this is the first HVAC-related MoU to be signed
in the country with CESA. ASHRAE secretary, Russell
Hattingh, also shared that this is the first MoU signed
in the ASHRAE South African Chapter.
The MoU will last for three years. ASHRAE
president, Richard Humphrey called it a historic
day. CLA
Industry associations ASHRAE and CESA have signed an
MoU agreeing to work together for the advancement of the
engineering field.
From left: ASHRAE president, Richard Humphrey and CESA
president, Neresh Pather.
GCCA addresses microclimates
in refrigerated trailers
P
A member reached out to the GCCA Inquiry Service with a question regarding how product
temperature changes when the ambient temperature of the trailer changes.
variables. The correlation between air
and product temperatures in transit
vehicles has been an ongoing topic of
discussion for decades.
atrick Brecht, PhD, member of the
World Food Logistics Organisation
(WFLO) Scientific Advisory Council
responds: “Yes, there are many, many
The correlation between air and product temperatures in transit vehicles has been an
ongoing topic of discussion for decades.
COLD LINK AFRICA •
January/February 2020
“As background, our stationary and
live load tests over many years have
demonstrated that air and product
temperatures within the cargo space of
the single and multi-temperature reefer
trailers can vary greatly from one location
in the load to another, depending on an
array of factors. Accordingly, recorded
air temperatures in one portion of the
load are often not indicative of air or
product temperatures in other locations
within the load. as the amount of radiant heat load of
the sun, road heat, humidity, rate of
speed of the transit vehicle, or diurnal
temperatures.”
The Global Cold Chain Alliance
(GCCA) and its Core Partners are
supported by WFLO, a non-profit
foundation. WFLO develops education
and research for the industry and
provides cold chain advisory services that
empower economic development and
strengthen the global cold chain. CLA
“Temperature differentials create
microenvironments within the cargo
and the air surrounding the cargo. These
microenvironments represent distinct
and unique environments within the
cargo space of the refrigerated trailer.
A microenvironment may be a very
small, specific area, distinguished from
other microenvironments and potentially
influenced differently by its immediate
surroundings such as the placement and
stacking of the cargo within the truck
trailer, air infiltration into the truck trailer,
the airflow and temperature stratification
in the load and other factors, as well Temperature
differentials create
microenvironments
within the cargo and
the air surrounding
the cargo.
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