RACA Journal August 2022 | Page 38

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Project
• A minimum of 6 air changes per hour ( ACH ) is provided into
the spaces .
• Standalone extract system will serve each area enabling the
The theatre plantroom .
© RACA Journal | Benjamin Brits
ward / department to be under negative pressure . º Extract grilles will be placed at the furthest point from the entrance door in order to create the required pressure cascading / air flow direction .
Typical schematic of airflow during Normal and Pandemic modes is shown below :
Internal view - AHU ( fan and LEV kits ).
© RACA Journal | Benjamin Brits
Figure 1 : normal mode .
© Spoormaker and Partners
One of the fresh air intakes for the main plantroom located on the roof .
© RACA Journal | Benjamin Brits
Figure 2 : pandemic mode .
© Spoormaker and Partners
© RACA Journal | Benjamin Brits
Some of the heat recovery condensers located on the roof .
© RACA Journal | Benjamin Brits
Internal view - AHU ( DX coil , electric heater bank and humidifier ). Radiology department ( Bucky room ).
Spoormaker and Partners | R da Silva

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RACA Journal I August 2022 www . refrigerationandaircon . co . za