Recently, the Underwriters Laboratory (UL) has approved the second edition of its UL 60335-2-89 standard, which includes higher R-290 charge limits that would expand its potential uses in commercial refrigeration.
So-called natural refrigerants such as CO2 and propane are becoming more popular, due to changing regulations at the state level – and likely the federal level soon.
EPA issued a final rule establishing a comprehensive program to cap and phase down the production and consumption of climate-damaging HFCs in the United States.
With the phaseout of HCFC refrigerants and the impending phasedown of HFCs, food retailers are looking at lower-GWP solutions for their refrigeration equipment.