INCORPORATING COLD CHAIN
PROJECT
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Lutz Refrigeration
final office infrastructure and tarring
of the parking lot to the facility is
completed. Once this cold room starts
up Douglasdale will be able to hold at
least 100 pallets of fresh dairy product
closer to the source, reducing the cost
of transporting the good on a smaller
load basis and getting product to the
end user quicker.
standalone systems for redundancy in the
event of a breakdown.
NEEDS AND SYSTEM
COMPONENTS
When dealing with milk specifically
the objective is to store the product
at as close to 0°C as possible without
freezing. Additionally, Douglasdale
Cold Link Africa
they have processing facilities for Amazi
and pasteurised milk which include large
air-blast chillers for the Amazi, and icebanks
to cool the milk rapidly during the
pasteurisation process. Douglasdale has
a legacy of ammonia systems that were
installed in the 1990s.
The various blast chilling systems have a
combined cooling capacity of around
350kW. Additionally, there are two
holding freezers on site that can store up
to 300 pallets.
All the refrigeration systems are built
with two system solution for redundancy
The systems installed here comprised
produces Amazi – which is fermented at
of a GEA semi-hermetic compressor with
all coils (condenser and evaporator)
supplied by Colcoil in Cape Town, total
installed cooling capacity here was 60kw
a temperature of 22°C and then cooled
to close to 0°C for longer terms storage,
distribution and then sale.
At Douglasdale’s main bottling plant
1. The condensing unit at Vereeniging depot. The total installed cooling capacity here is
60kW.
2. Roof of Ice Bank, pipes entering tank area.
cooling from a Freon plant, with two
and depot in Gauteng, South Africa,
3. One of the four milk tanks at the Fourways facility.
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Cold Link Africa
COLD LINK AFRICA • September 2020 www.coldlinkafrica.co.za 19