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.
Chiller OEMs have been preparing for a refrigerant phasedown, and they are identifying alternative refrigerants that are efficient, safe, and cost-effective.
Change is coming to the HVACR industry as state and federal regulations are being enacted that will lead to a phase down of high-GWP refrigerants such as R-410A.
The research was undertaken to develop training programs for firefighting personnel when responding to fires in occupancies with both new and existing refrigerants.