A British supermarket chain has retrofitted one of its supermarket refrigeration system with R-449A (GWP = 1 397), a blend containing R-32/R-125 /R-134a/R-1234yf / (24.3/24.7/25.7/25.3 weight %) as a replacement for R-404A (GWP =3 922). The system comprises two high temperature packs and one low temperature pack.
Analysis of energy consumption showed a reduction of 8.7 % for the high temperature systems and of 3.0 % for the low temperature system.
Adding to the 64 % reduction in GWP, the supermarket carbon footprint could be significantly reduced.
Source : ACR Journal