Non-flammable, lower GWP alternatives to R-404A.

In an effort to comply with the worldwide regulations to reduce the environmental impact of refrigerants, there is large industrial movement to develop next generation refrigerants. In particular, alternatives to R-404A are gaining large interest, due to its wide usage in commercial refrigeration and relatively high GWP, among the HFCs currently in use. To this end, a lower GWP, non-flammable refrigerant ARM-32b has been developed as a replacement to R-404A. In this work, a drop-in test of ARM-32b was performed, and the capacity, performance, discharge temperature, and flow rate are presented along with the R-404A baseline. System results showed a potential for improved energy efficiency, while exhibiting similar capacity.