INCORPORATING COLD CHAIN
PROJECT
Supplied by John Ackermann Supplied by John Ackermann
Supervisor , Tarryn Schilder , in the revamped catering services department .
the optimum storage temperature for each product type .
For the specified cooling capacities , the following Bitzer semi-hermetics were selected :
• 11 x 2CES-4Y - 10Kw @ -5 / 45 – medium temperature rooms
• 4 x 2CES-4Y - 4.4Kw @ -25 / 45 – low temperature rooms
• 4 x 4HE-25Y - 19Kw @ -25 / 45 – blast chillers
• 1 x 4EES-6Y - 14kw @ -5 / 45 – medium temperature room
The structure of the blast chillers is in tandem with cold rooms , adjacent to the cooking area . From the cookers , the product is transferred onto trays , which are placed on trolleys , then wheeled into the blast chillers . After being chilled , the trolleys are wheeled directly into the adjacent cold rooms .
SECURITY OF EQUIPMENT AGAINST VANDALISM
To minimise pipe runs , the condensing units of the blast chillers , freezers and cold rooms , were placed in a space on the floor above . Chilled water piping from the large water chillers elsewhere and piping for floor vacuuming , is in the same space and limited the free space available for the condensing units for the new refrigeration systems . Having the condensing units in the upper floor space reduced the risk of vandalism , which could occur if the condensing units were at accessible levels in the wide driveway between the two wings of the building .
Simon James and his team from James Refrigeration were on site full time for nine months , while the old plant and rooms were replaced . “ Keeping the catering services operational was a challenge . It went relatively smoothly by the close co-operation of our subcontractors , Tectron Electrical , Insulated Panel Construction and the staff of the catering services department ,” was said by Douglas James of James Refrigeration .
“ The new cold rooms , blast chillers , the layout of the rooms and the new trolleys , have vastly improved the
From the blast chillers , the chilled food , on mobile racking , is wheeled into the adjoining cold room .
COLD LINK AFRICA • November 2023 www . coldlinkafrica . co . za 23