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Optimización energética de los refrigerantes R152a, R1234yf, R290, R1270, R600a y R744, como alternativa al R134a en un armario de refrigeración vertical.
Energy optimisation of R152a, R1234yf, R290, R1270, R600a and R744 refrigerants as alternatives to R134a in a vertical refrigeration cabinet.
Experimental study of PVTx properties of mixture refrigerant R1234yf/R134a.
[In Chinese. / En chinois.]
Experimental assessment on performance of a heat pump cycle using R32/R1234yf and R744/R32/R1234yf.
IIR document
Vapor-liquid equilibrium measurements and models for the ternary mixtures of R1234yf + R32 + R125 and R1234yf + R32 + CO2.
Thermophysical property measurements for R1234yf + R1234ze(E) mixture.
Simulation on vapor liquid equilibria of R1234yf/R290/R134a ternary system.
A thermodynamic property model for R1234yf and propane mixtures.
Combustion characteristic of 2,3,3,3-tetrafluroropropene (R1234yf).
Correlations for the viscosity of 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) and trans-1,3,3,3-tetrafluoropropene (R1234ze(E)).
Phase behavior of R1234yf and R600a in pentaerythritol tetranonanoate.
Recommended by the IIR / IIR document
Research on inhibition of flame retardants on flammability of R1234yf.
Investigation of the thermophysical properties of the R744+R1234yf binary system.
Viscosity measurements and modeling for R32 and binary mixture of R32/ R1234yf.
Measurements of isobaric heat capacity of gaseous R1234yf.
Thermodynamic analysis of linear compressor using R1234yf.
Refrigeration sector monitoring
68 results
European Commission investigates over R1234yf patents
On December 16, 2011, the European Commission (EC) has "opened antitrust proceedings concerning agreements between Honeywell and DuPont" for the development of R1234yf for air-conditioning systems in cars. "
R1234yf tested for bus air conditioning
Tests co-funded by the Spanish Ministry of Science and Innovation and run bus AC system company Hispacold suggest that HFO-1234yf is a near drop-in replacement refrigerant for HFC-134a in the tested Hispacold’s 12S roof top bus air-conditioning...
Daimler decides not to switch to R1234yf
After having examined real-life scenarios conducted using R1234yf, Daimler, the manufacturer of Mercedes-Benz cars, has announced its intention to stick to R134a instead of implementing R1234yf in its automobile air-conditioning systems.
EPA permits R1234yf to be sold to US consumers
As a result of a lawsuit brought by the AAIA and the ARPI, the U.S. Environmental Protection Agency (EPA) issued a final rule that will permit R1234yf to be sold to US consumers.
R1234yf as a working fluid in Organic Rankine Cycle systems
A recent review article presented the use of HFO R1234yf and its mixtures in Organic Rankine Cycle (ORC) systems, namely in applications for waste heat recovery from internal...
Daimler agrees to use R1234yf to comply with EU regulations
Daimler agrees to use R1234yf but will phase in CO2 from next year.
Arkema announced the construction of a R1234yf production plant in China
Arkema, French leading supplier of refrigerants, recently announced the construction of a R1234yf production plant in Changsu (near Shanghai), China.
Controversy over R1234yf: EC confirms enforcement of MAC Directive by January 1, 2013
Despite the safety concerns expressed by Daimler and calls for an additional moratorium in the refrigerant transition schedule, the EC restated on December 20, 2012, that “the MAC Directive will be fully enforced as of January 1, 2013”
MAC: SAE considers R1234yf as “safe and effective” and AC5 and AC6 blends as “technically credible”
The SAE International Cooperative Research Project team has concluded that “R1234yf refrigerant is safe and effective to use in automotive applications. It also concluded that “based on a detailed fault tree analysis, AC6 offers a risk profile...
R1234yf could be used in 3 million cars by the end of the year
DuPont expects refrigerant HFO1234yf will be used in the air-conditioning systems of nearly 3-million vehicles worldwide by the end of this year.
Performance comparison of R1234yf and R134a
A study published in Applied Thermal Engineering compares the performance of HFC-134a and HFO-1234yf as drop-in alternative in automotive air conditioning systems.
European Commission questions Honeywell/DuPont R1234yf collaboration
On October 21, 2014, the European Commission has sent a Statement of Objections to Honeywell and DuPont regarding cooperation on new refrigerant used in car air-conditioning systems.
Briefs: HFO1234yf: results of SAE investigations
The Society of Automobile Engineers (SAE) International Cooperative Research Program (CRP) presented its findings on the new alternative refrigerant for mobile air-conditioning systems HFO-1234yf. SAE is a global association of 115 000 engineers...
HFC134a/HFO1234yf mixture: lower GWP without flammability
A recent study* published in the International Journal of Refrigeration (IJR) by Inha University, South Korea, compared the performance of HFC134a, HFO1234yf and HFO1234yf/HFC134a mixtures at three compositions of 5%, 10% and 15% HFC134a
Nearly 500,000 German cars use 1234yf
Despite some German opposition to the new car air conditioning refrigerant R1234yf, around 500,000 cars have already been registered in the country with this gas.
IIR news
2 results
Member news: Koura introduces new refrigerant for air conditioning
Refrigerant manufacturer Koura recently introduced R468C, a refrigerant that could replace R410A in air conditioning systems.
The Mostra Convegno exhibition
In March 2018 the IIR participated in one of the biggest exhibitions on refrigeration technologies, Mostra Convegno, which took place, as always, in Milan.
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...
