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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.
IIR document
Low-GWP alternatives for an R-449A commercial refrigeration system.
Field measurements of a R404A low-temperature supermarket refrigeration system retrofitted with R449A.
Retrofit of lower GWP alternative R449A into an existing R404A indirect supermarket refrigeration system.
Energy efficiency and system performance of R-454C, R-449A, and R-744 in food retail refrigeration systems: a comparison.
Recommended by the IIR / IIR document
R-449A configurations for energy efficiency improvement of an R-404A commercial refrigeration system.
Application of an HFO blend (R-449A) in flooded R-22 chillers.
Performance evaluation of a flooded ice rink chiller retrofit from R-22 to R-449a
Outdoor condensing units Handling the low-GWP refrigerants including R448A and R449A
Flow boiling heat transfer of zeotropic mixture refrigerants R454B and R449A in a smooth horizontal tube.
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.
Prestazioni impiaoto frigorifero di un supermercato, con R-449A in confronto al R-404A.
Results from supermarket refrigerating system trial with R-449A in comparison with R-404A.
Development of a dynamic model for ice-on-coil external melt storage systems.
Refrigeration sector monitoring
15 results
Supermarkets: retrofit of refrigerating systems from R404A to R449A
Two examples of retrofitting supermarket refrigerating systems from R404A to R449A.
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.
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...
Supermarket refrigerant retrofitting.
A few figures about supermarkets retrofitting their refrigeration systems with alternative refrigerants.
EU: High-GWP HFC shortages and price rises
Several refrigeration associations in the EU have warned of severe refrigerant supply problems in their countries.
Evaluating lubricants for lower GWP refrigerant compressor operation.
Summary of an interesting paper from the recent Purdue conference.
The US Environmental Protection Agency (EPA) updates its list of low GWP refrigerants
The US EPA has added new lower GWP refrigerants and expanded the acceptable uses of others in its latest changes to the Significant New Alternatives Policy (SNAP) programme.
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)
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.
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.
Price increase for HFCs
Chemours, Mexichem and Arkema have announced 10-15% rise in cost of several HFCs from 1st January 2016
US: EPA raises hydrocarbon charge limit for home fridges
New US rules allowing greater charge sizes of hydrocarbon refrigerants in new domestic refrigerators and freezers entered into force on September 7, 2018.
IIR news
2 results
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.
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.
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...
