RACA Journal May 2022 | Page 49

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Project
© RACA Journal | Benjamin Brits
The VRF condensing units located at the rooftop plant area that serve the penthouses .
term rentals as part of an investor-type portfolio model , others are occupied by owners themselves .
CLIENT BRIEF ACS Consulting Engineers ( ACS ) was approached by Grapnel Property Developers , to design the entire Mechanical services of the building including HVAC , natural gas , wet services , fire smoke detection and public address systems , in addition to substantial
basement ventilation systems including vehicle fume detection aspects . At the start of the design stage , ACS offered several options , one of which included a tri-generation solution for the HVAC , electrical generation and hot water , but this system was unfortunately declined by the client owing to costs .
The reason for this proposal was that this area of Johannesburg has an intricate network of existing gas infrastructure ( natural gas supplied by Egoli Gas ), but this solution
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1 and 2 : A render of the rooftop plant . 3 4
3 and 4 : The installed rooftop plant showing bathroom extract systems and AC units .

www . hvacronline . co . za RACA Journal I May 2022 47