Project
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This development also required significant bathroom extraction too , as almost none of the bathrooms were located at points where openable windows were possible and so this function had to be aided by means of mechanical extraction . A total of 13 extract fans are located on the roof . Each fan is connected to multiple riser ducts , each serving multiple apartments vertically aligned .
The extract ducting was internally insulated with sound absorbing material from the fan to the bottom of the 12 th residential floor . This was done to reduce the mechanical noise from the fan itself and also to reduce the air noise from air moving through the ducting ; especially since all the main extract fans are located near the penthouse units .
PROJECT CHALLENGES During the hold period between 2014 and 2016 , the owner and architect had some different ideas based on market conditions and so made significant changes to the building and also added an additional floor . This meant that ACS had to change and amend all of their drawings on Revit ( which is actually not as easy as people think ).
As the scope of the building changed another challenge was the fact that one of the penthouse units wanted a customdesigned unit rather than the pre-designed specification . This then required that all of the air-conditioning be re-designed and take into account the interior designer ’ s layout needs to meet the clients aesthetic expectation . Wall-mounted units were changed to hideaways and changes to the sizes and locations of these units and ducting layouts all had to be updated .
EFFICIENCY Although a tri-generation system was proposed for this project that was declined , it is still considered best practices to specify the most efficient products and to follow standard building codes and regulations .
Image 1-3 : ACS
1-3 : The CFD ( computational fluid dynamics ) that was done for the basement ventilation system in general ventilation and emergency ventilation modes .
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RACA Journal I May 2022 www . hvacronline . co . za