As much as 988g of R290 can be used in split AC systems with certain enhancements, according to new IEC 60335-2-40 standard.
Member countries on IEC subcommittee approve changes to safety standard IEC 60335-2-40; next step is to prepare a final draft.
R290’s thermodynamic properties make it an obvious refrigerant choice, not only for plug-in refrigeration cabinets, but also for air conditioning, according to IEC’s Marek Zgliczynski.
Changes to global standard IEC 60335-2-40 would allow increasing the amount of R290 under specified circumstances; votes due by October 30.
Stakeholders see more adoption of hydrocarbon display cases, possibly impacting market share of CO2 and A2Ls
Texas grocer using R290 expects cost savings with a 500-g charge, but standards bodies and fire marshals have to weigh in.
Participants in ATMO Australia 2019 said an increased hydrocarbon charge limit will reduce costs and accelerate adoption of propane in Australia.
The global standards body approves 500-g charge limit for hydrocarbons after rejecting Malaysia vote, setting stage for wider use in commercial display cases.