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IIR document
Evaporation heat transfer coefficient and pressure drop of R-446A, R1234ze(E), and r-1233ZD(E).
Experimental studying on low GWP refrigerant R446A as an alternative to R410A in residential air conditioner.
Recommended by the IIR / IIR document
Outdoor condensing units Handling the low-GWP refrigerants including R448A and R449A
Evaporation heat transfer of the low GWP alternative refrigerants (R-448A, R-449A, R-455A, R-454C) for R-404A in a microfin tube.
Condensation heat transfer and pressure drop of low GWP R-404A alternative refrigerants (R-448A, R-449A, R-455A, R-454C) in a 5.6 mm inner diameter horizontal smooth tube.
Condensation heat transfer and pressure drop of low GWP R-404A-alternative refrigerants (R-448A, R-449A, R-455A, R-454C) in a 7.0-mm outer-diameter horizontal microfin tube.
Sustitución del R404A en un sistema de refrigeración de media y baja temperatura mediante ciclos de compresión paralela con el R-449A.
Substitution of R404A in a medium and low temperature refrigeration system using parallel compression cycles with R-449A.
The two-phase flow boiling heat transfer coefficient of r448a inside multiport mini-channel tube.
Evaluation of cycle performance of R448A and R449A as R404A replacements in supermarket refrigeration systems.
Flow boiling heat transfer of zeotropic mixture refrigerants R454B and R449A in a smooth horizontal tube.
Low-GWP alternatives for an R-449A commercial refrigeration system.
Operation parameters of a walk-in cooler after retrofiting R404A with R448A.
Study of R-404A and R-448A refrigerants in low temperature refrigeration of electronics.
Field measurements of a R404A low-temperature supermarket refrigeration system retrofitted with R449A.
Refrigeration sector monitoring
20 results
Supermarkets: retrofit of refrigerating systems from R404A to R449A
Two examples of retrofitting supermarket refrigerating systems from R404A to R449A.
IIR Member news - Solstice N41 (R466A), a new refrigerant from Honeywell
Focus on a brand new refrigerant Solstice N41 (or R466A) which could represent an interesting alternative to R410A in air conditioning.
Replacement of R404A in supermarkets
R404A is particularly targeted by the EU F-gas Regulation and many refrigerant producers announced important price rises. Various option can be considered to replace it.
Summary of two papers of the 9th International Conference on Compressors and Coolants (ICCC2017)
The IIR 9th International Conference on Compressors and Coolants (ICCC2017), which took place in Bratislava, Slovakia, in September 2017, addressed advances in compressors but also refrigerating technologies and alternative refrigerants, as...
US: a step closer to authorizing HCs in vending machines?
A submission by A.S. Trust & Holdings requesting SNAP approval for the use of hydrocarbon refrigerant R441A in new vending machines has been found complete by the US Environmental Protection Agency (EPA). As a result, “R441A may be sold in new...
US EPA proposes acceptance of hydrocarbons and R32 in 6 applications
The US EPA has proposed a range of acceptable uses for hydrocarbon refrigerants – R600a, R290, R170 and R441A along with R32 under the EPA’s Significant New Alternatives Policy (SNAP)
Low GWP refrigerants for Olympic ice rinks in China
For the Olympic and Paralympic Winter Games in Beijing, nine ice rinks are used. five use CO2 as a refrigerant, and four use R449A.
Air conditioning: which refrigerant will become the leading alternative to R410A?
R32 is being adopted widely for residential and small commercial air conditioning applications, but R466A, R452B and R454B are promising candidates, especially for larger size systems.
Japan: update of the High Pressure Gas Safety Act
Since July 2017, revisions of this regulation expedite the adoption of alternative refrigerants with lower GWP.
EU Regulation on fluorinated gas impacts
The revised regulation on fluorinated gas No 517/2014 was published on May 20, 2014 in the Official Journal of the European Union. It entered into force on June 9 and will apply from January 1, 2015.
Latest news on HFCs alternatives
R470A, R470B, R466: What applications and what features for these new non-flammable refrigerants?
Alternative refrigerants to high-GWP HFCs
Intensification of international regulations on HFCs such as the Kigali Agreement or the European F-Gas Regulation leads refrigerant manufacturers to search for alternatives to high-GWP HFCs. Focus on some alternatives to R410A and R23.
US: EPA approves 3 hydrocarbon refrigerants for household and commercial uses
The US Environmental Protection Agency (EPA) has added 3 hydrocarbons as acceptable alternatives in household refrigerators and freezers, combination refrigerator-freezers, and commercial stand-alone units through EPA’s Significant New...
US: EPA expands the use of 4 hydrocarbons and R32
The US Environmental Protection Agency (EPA) recently authorised the use of four hydrocarbon refrigerants and R32 in various applications.
Mexichem, DuPont and Honeywell announced new HFO-based alternatives for R404A and R134a
M. Cooper, sales manager for Mexichem, revealed in RAC the manufacturer’s offering for stationary refrigeration would be based on its AC5 refrigerant (R444A) which has been undergoing development as a mobile air-conditioning refrigerant....
IIR news
2 results
Member news: Koura offers an alternative refrigerant to R1234yf for mobile air conditioning
Koura offers a direct replacement solution for R1234yf in mobile air conditioning.
New IIR conference on the application of HFO Refrigerants
From September 2 to 5, 2018 in Birmingham (UK), the Institute of Refrigeration (IOR) will host the inaugural IIR International Conference on the application of HFO Refrigerants.
Encyclopedia of Refrigeration
1 result
Global warming potential (GWP) of HFC refrigerants
Using the latest updated data from UNEP’s RTOC 2022 report, we have compiled the 100-year GWP and 20-year GWP values of hydrofluorocarbon-based (HFC) refrigerants. Our table includes...
