PROJECT
INCORPORATING COLD CHAIN
pressure transducer control on the lead included the blast freezers), a multiplex
compressor. refrigeration plant (plant C) was
Each of the rooms connected to
installed, which consists of three Bitzer
plants A and B were then outfitted semi-hermetic compressors with a
with two HC evaporator coolers, with total capacity of 100.5kWR and an
capacities ranging from 7kWR to evaporation temperature of -32°C. This
30kWR, depending on their specific would provide lower temperatures of up
requirements. However, there were a to -25°C for the blast chillers.
In addition, rooms 9 and 10 would
handful of exceptions since it was found
that the existing coolers in some of the be connected via a satellite Bitzer
rooms could be integrated into the new compressor with a capacity of 31.5kWR,
system (which saved some costs). positioned on the same receiver base.
With an evaporation temperature of
Again, HC evaporator coolers were
-7°C, plants A and B supply refrigeration installed in each of the five rooms
to all the rooms, except for five rooms that on plant C’s circuit, with capacities
demanded a more heavy-duty solution. ranging from 8.5kWR to 23kWR. Each
For rooms 3, 6, and 8 (which
2
of the coolers in all 28 of the facility’s
1
3
1. Evaporators in the processing area.
2. The water filtration system.
3. Inside the bacon packing area.
4. Smoke room.
4
COLD LINK AFRICA • May 2019
www.coldlinkafrica.co.za
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