www . refrigerationandaircon . co . za RACA Journal I July 2023 21
Business designs are continuously improved by large research and development teams with excellent testing facilities and laboratories .
“ Energy efficiency is a core design feature of VRV / F equipment and this is evident in the compressor and heat exchange technologies used in these products . The start-up power requirements are extremely low due to the inverter compressors . A majority of air-conditioning applications have varying building load profiles and varying occupancy , this coupled with varying ambient conditions is ideal for VRV / F equipment , which provides excellent energy efficiency at part load conditions ,” he says .
Chettiar explains that VRV / F brands have been very mindful of the phase out of HFC as a majority of these brands have a presence in Europe and understand the need of having a solution to the HFC phase out . “ Refrigerants like R32 and R466A which have a low Global Warming Potential ( GWP ) are being introduced by the different brands . New Hybrid units with R32 as the primary circuit and H 2
O as a secondary circuit have been introduced .
“ VRV / F units can be used in a wide variety of residential and commercial applications . The units are especially popular when simultaneous heating and cooling is required , and heat recovery is optimised .
“ When VRV / F units are coupled with AHUs to form a full Hybrid Rooftop unit , this new solution can be used in a wide range of commercial and light industrial applications . This solution offers the clients application specific , cooling , heating , humidification , dehumidification , heat recovery wheels , Air-to- Air Heat Exchangers with various filtration options to suit site requirements for shopping malls , retail spaces , offices , lobbies , auditoriums and hospitals .”
In conclusion , VRF technology has seen significant changes and innovations , and the competition among brands has led to great innovation . The popularity of VRF technology can be attributed to its advanced controls philosophy , excellent training and energy efficiency . VRF technology is ideal for a wide range of residential and commercial applications , and with the introduction of low GWP refrigerants and hybrid units , it is set to continue to be a popular choice for many years to come . RACA
“ Energy efficiency is a core design feature of VRV / F equipment .”
www . refrigerationandaircon . co . za RACA Journal I July 2023 21