Since the start of the Montreal Protocol, the use of CFCs for Metered dose inhalers (MDIs) for the treatment of respiratory illnesses, such as asthma and chronic obstructive pulmonary disease (COPD), has dropped from a 1997 peak of around 10,000 tonnes to about 300 tonnes in 2013.
In addition to already investigated blends in the search for a lower GWP alternative to R-410A (GWP = 2,088) in air conditioning systems, such as blends of around 72 % HFC-32 and 28 % of HFO-1234yf or HFO-1234zeE, another blend has now been proposed, composed of HFC-32/HFC-125/HFO-1234yf (67 / 7 / 26 % weight), with a GWP of 698 (using the F-Gas Regulation GWP rules).
The German “RAL Quality Assurance Association for the Demanufacture of Refrigeration Equipment” considers essential to recover jointly CFCs and HCs (hydrocarbons) from dismantled refrigeration appliances, in order to minimize the carbon footprint from these refrigeration appliances.
An American Polyurethane spray foam insulation producer has been hailed by the White House for its commitment to use low GWP HFO-1234zeE as the blowing agent for its entire production line by 2016, as part of the US Climate action Plan.
Japanese authorities have decided that HFOs 1234yf, 1234zeE and 1233zdE should not be subject to the fluorocarbons emissions control legislation, which strictly regulates their use, recovery and destruction.
A new line of HFC based air-water heat pumps has been introduced, providing high level performance ratings, a SCOP value of up to 3.38 and a ESEER (European Seasonal Energy Efficiency Ratio) in cooling up to 4.28.
An Italian supermarket has replaced the medium-temperature refrigerant R-404A (GWP = 3,922) of a R-404A/CO2 cascade refrigeration system by the lower GWP refrigerant blend R-449A (GWP = 1,397) – composition HFC-32 /HFC-125 /HFO-1234yf /HFC-134a, 24.3/24.7/25.3/25.7 % by weight.
Comparing lower GWP alternatives for a 10 kW R-410A Heat pump, a study carried on by the IIR Working Group on LCCP Evaluation concluded that blends of HFC-32 with HFOs had a lower LCCP than HFC-32 or propane R-290.