PROJECT
INCORPORATING COLD CHAIN
Steel structure with chilled water evaporators placed.
cooling or heating. It can maintain a
high level of humidity and cool/heat at
the same time.
CO 2 levels are monitored and they
control the extract fans accordingly,
so no unnecessary air is extracted,
preventing loss of ethylene gas, humidity,
and temperature. They make use of a
Class 6 gas-tight fully automated door
— this door de-creases the leakage
accrued in traditional de-greening
rooms as well as controls access during
operation.
An operation platform has been
created, where the manager will set
de-greening parameters and the
operator will select the type of fruit to
be de-greened. The system will adjust
all settings accordingly. This means, for
instance, you can de-green oranges
today and lemons tomorrow. By
selecting lemons, all settings will be
changed to lemons, and after that
oranges can be de-greened again by
selecting the oranges. The settings and
the process will be exactly the same as
the first oranges that were de-greened.
Also, this type of layout was new to the
construction and structural contractors
and San Group had to work closely with
them to avoid misunderstandings.
LIST OF PROFESSIONALS
CHALLENGES Owner / developer Endulini Fruit
The biggest challenge was that
most components required could
not be bought off the shelf or from
catalogues, and San Group had to
engineer/design and manufacture
most components for this project.
“We were given a short project
completion time by the client, and we
had to import and plan all deliveries
of equipment as well as coordinate
services on site to ensure everything
happened according to schedule,”
explains Van Zyl. Project manager Viaplan – JJ Kriel
Consulting engineers
Contractors
Suppliers
Heat pump chiller for each de-greening room.
18
But in the end, everything came together
and the client was very happy with
the end result, which exceeded his
expectations. CLA
Electrical Broad Automation
Refrigeration San Group
Wet services Rand Civils
Civil Rand Civils
Main building Rand Civils / Endulini Fruit
HVAC & R San Group
Wet services Rand Civils
Electrical Broad Automation
Evaporators HC Heat Exchangers
Heat pump chiller Daikin
Control system Eliwell – Keystar
Sensors/probes Eliwell – Keystar
Electrical DBs Broad Automation
Fans Elta – Midair
Sectional door BG Doors
Pipe lagging U-Lag
Chilled water piping Rifeng
Humidity system Carel
Gauges Wika
Pressure regulators Honeywell
Three-way valve Siemens
Balancing valves Instruments 4 You
Solenoid valves Burkert
Flow meter Rebus Control
Ethylene system Wika
www.coldlinkafrica.co.za
COLD LINK AFRICA • March/April 2019