INCORPORATING COLD CHAIN
PROJECT
Pack B additionally provides cooling for the liquor store ’ s cold room .
There are two blower coils that are mounted in the plant room with the main objective of cooling all the equipment that is located in this space . This ensures that the equipment operation occurs at acceptable and safe ambient temperatures .
Packs A & B have also been designed with the ability of reclaiming heat for domestic water applications – this is achieved by the inclusion of a heat exchanger on the discharge line .
All distribution piping as well as tube fittings are stainless steel , and are used to connect to all appropriate components – as was specified to the installation team . Where necessary and / or unavoidable , high pressure copper piping is used to connect components that are manufactured with copper connections .
All electrical components are linked with an array of cables , controlled by switchgear and programmable controllers to ensure that the refrigeration system is able to operate at optimum performance . All controls are connected to a computer-based logging system which can be found in the office of the maintenance manager .
ENERGY EFFICIENT / SUSTAINABILITY With this installation , we are expecting to see a 25 % to 35 % energy saving . There will be significant savings in domestic hot water – where low temperature heat reclaim will be used for domestic hot water requirements .
Hot gas defrost has also been utilised on the freezer rooms as well as the walk-around freezers .
Additionally , all reusable condensate water has been reclaimed and re-utilised for the adiabatic gas coolers and for watering of the gardens at the site .
Makro Receiving area with HC coils .
The system installed at the Pietermaritzburg site , collaboratively supplies to the store approximately 504kW cooling capacity .
Containerised CO 2 refrigeration plant room .
Containerised CO 2 refrigeration plant room .
ABB Variable Speed Dive ( VSD ) for the compressors .
COLD LINK AFRICA • March / April 2023 www . coldlinkafrica . co . za 29