Project
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network and integrated moulding mechine ( IMM ) network . The large custom AHU was not part of the scope of the HVAC plant installation and was provided by another international partner . The CCW is the chilled-water supply to the AHU section and moulding machine cooling requirement . The IMM network feeds the section of the plant that uses chill water from the CCW network as well as the cooling tower water network .
THE HVAC SYSTEM AND INSTALLATION After analysing the type of moulding presses and their cooling requirements , as well as their respective placement within the production facility , it was decided that dual cooling circuits would be implemented .
Two-of water cooled chillers and primary pumps would provide 7 ° C / 12 ° C water direct to the paint shop AHU , while temperature requirements ( 14 ° C / 19 ° C ) for the primary side of the moulding machines would be taken care of via a dedicated heat exchanger and secondary pumps . All of the moulding presses have two independent circuits ( for the hydraulics and moulding ) on them . These circuits needed to be cooled down with the different temperature regimes in accordance with specifications from the machines manufacturers .
© RACA Journal | Benjamin Brits © RACA Journal | Benjamin Brits
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" It was decided that dual cooling circuits would be implemented ."
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Two-of closed-circuit cooling towers are utilised at the site to cool the chillers and secondary side of the moulding machines . Two separate sets of condenser water pumps were used for these circuits .
© RACA Journal | Benjamin Brits
DIFFICULTY IN MEETING SPECIFICATION / SOLVING THE CHALLENGES The client ’ s brief was to provide equipment that was efficient not only under full load conditions but also in a partial load
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1 . The facility finishing area of the paint shop where products are dried and packaged .
2 . The pipework installation in the finishing facilility of the paint shop is mounted onto the heavy duty cable ladder .
3 . The very large air handling unit used in the spray booth is one component that this system supplies chilled water to meet manufacturer and process requirements .
4 . The screw-type chiller installed in the lower plant room .
© RACA Journal | Benjamin Brits
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