Case Studies | rickardair

Case Studies

ENERGY COMPARISON


LOW PRESSURE VAV DIFFUSERS
vs
HIGH PRESSURE VAV BOX SYSTEMS


South Africa is unique in that it uses Variable Air Volume diffusers in the majority of its buildings that are air-conditioned with ducted systems. The alternative that is commonly used abroad is a combination of constant volume diffusers and VAV boxes. The advantage of VAV diffusers are their energy savings, comfort levels and flexibility. A study by an external engineering consultancy shows that VAV diffusers save 20% of an installations air-conditioning energy expenditure and 5% of the entire buildings energy bill. Unlike VAV boxes, VAV diffusers directly affect fan speed and hence energy used when they reduce the volume of air into the conditioned space. VAV diffusers are also able to maintain air movement and comfort levels while doing so.

Case Study

Download VAV Box vs VAV Diffuser Energy Case Study

Supporting Documents

Download Energy Case Study-Energy Cost Spreadsheet
Download Energy Case Study-Duct Cost Spreadsheet
Download Energy Case Study-VAV Box Duct Diagram
Download Energy Case Study-VAV Diffuser Duct Diagram

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