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IIR document

Evaluation of flammability characteristics of mixed refrigerants R134a/R1270, R134a/R170, and R170/R1270.

• Author(s) : ZHANG Z., HE G., NING Q., WANG Z., YANG W., HUA J., ZHOU S.
• Publication date: 2023/12
• Languages : English
• Keywords : R134a, Flammability, Expérimentation, R170, R1270, Inhibition, Thermodynamic property, Binary mixture
• Source: International Journal of Refrigeration - Revue Internationale du Froid - Vol. 156
• Formats : PDF

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.

• Author(s) : SÁNCHEZ D., ANDREU-NACHER A., CALLEJA-ANTA D., NEBOT-ANDRÉS L., VIDAN-FALOMIR F., LLOPIS R., CABELLO R., LARRONDO-SANCHO R.
• Publication date: 2022/04
• Languages : Spanish
• Keywords : Display cabinet, R152a, R744, R290, R1234yf, R600a, R1270, Substitute, Energy consumption, Optimization, Expérimentation
• Source: XI Congreso Ibérico y IX Congreso Iberoamericano de Ciencias y Técnicas del Frío, CYTEF 2022.
• Formats : PDF

IIR document

Condensation heat transfer and pressure drop of azeotropic mixture refrigerant R32/R1270 inside horizontal small-diameter tubes.

• Author(s) : HIROSE M., ICHINOSE J., JIGE D., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : R1270, Propylene, Heat transfer, R32, Azeotropic mixture, Expérimentation, Condensation, Pressure drop
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Vapor-liquid equilibrium measurement for carbon dioxide (CO2)+propylene (R1270) binary mixture at temperatures from subcritical to supercritical.

• Author(s) : WU Z., SUN R., SHI L., HU P., TIAN H., WANG X., SHU G.
• Publication date: 2024/02
• Languages : English
• Keywords : CO2, R744, R1270, Propylene, Modelling, Equation of state, Expérimentation, Binary mixture, Calculation, Thermodynamic property
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 158
• Formats : PDF

IIR document

Measurement of vapor viscosity of R1234yf and its binary mixtures with R32, R125.

• Author(s) : DANG Y., KIM H. S., DANG C., et al.
• Publication date: 2015/10
• Languages : English
• Keywords : Viscosity, R1234yf, Vapour, R32, R125, Binary mixture
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 58
• Formats : PDF

IIR document

Experimental evaluation of the novel R744/R1270 blend in a transcritical refrigeration plant.

• Author(s) : LARRONDO-SANCHO R., VIDAN-FALOMIR F., HAIDA M., SÁNCHEZ D., SMOLKA J., CABELLO R.
• Publication date: 2023/08/21
• Languages : English
• Keywords : Transcritical cycle, CO2, R744, R1270, Propylene, Binary mixture, Expérimentation, COP
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

Performance analysis of HVAC twin screw compressor: study with two different refrigerants (R123 and R407C).

• Author(s) : ADHIKARY P., BANDYOPADHYAY S., MAZUMDAR A.
• Publication date: 2018/07/27
• Languages : English
• Keywords : R407C, CFD, R123, Simulation, Performance, Refrigerant, Screw compressor
• Source: Proceedings of the International Conference on Emerging Technologies for Sustainable and Intelligent HVAC&R Systems, Kolkata, July 27-28 2018.
• Formats : PDF

IIR document

Flammability inhibition effects of R227ea, R125, R134a, and R744 on 3,3,3-trifluoropropene (R1243zf)

• Author(s) : WU X., ZHANG X., TANG F., XU S., DANG C., SUN D.
• Publication date: 2022/02
• Languages : English
• Keywords : Flammability, R227ea, R125, R134a, R744, R1243zf, Expérimentation, Calculation, Inhibition
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 134
• Formats : PDF

IIR document

Experimental investigations of R134a and R123 falling film evaporation on enhanced horizontal tubes.

• Author(s) : ZHAO C. Y., JIN P. H., JI W. T., et al.
• Publication date: 2017/03
• Languages : English
• Keywords : R134a, Horizontal tube, R123, Falling film, Expérimentation, Evaporation, Film flow
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 75
• Formats : PDF

IIR document

Experimental investigation of the performance of an R1270/CO2 cascade refrigerant system.

• Author(s) : ZHANG Y., HE Y., WANG Y., WU X., JIA M., GONG Y.
• Publication date: 2020/06
• Languages : English
• Keywords : R1270, COP, Testing, CO2, R744, Cascade system, R290, Ammonia, Propane, R717, Substitute
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 114
• Formats : PDF

CFD analysis of low pressure screw compressor: using two refrigerants (HFO 1234yf and R123).

• Author(s) : ADHIKARY P., DAS R., MANGARAJ A. K., et al.
• Publication date: 2018/07/27
• Languages : English
• Keywords : R1234yf, CFD, Low pressure, Temperature, R123, Simulation, Refrigerant, Screw compressor
• Source: Proceedings of the International Conference on Emerging Technologies for Sustainable and Intelligent HVAC&R Systems, Kolkata, July 27-28 2018.
• Formats : PDF

IIR document

Experimental study on flow condensation pressure drop of R123-MWCNTs nanorefrigerant.

• Author(s) : KUMAR R., SINGH D. K., CHANDER S.
• Publication date: 2023/10
• Languages : English
• Keywords : Flow, Condensation, Expérimentation, Pressure drop, Nanorefrigerant, Horizontal tube, Heat exchanger, Testing, R123, Thermodynamic property, Nanotube
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 154
• Formats : PDF

IIR document

Experimental comparison of CO2 and alternative CO2/R1270 mixtures in a transcritical refrigerating plant. Energy evaluation in an MT application.

• Author(s) : VIDAN-FALOMIR F., LARRONDO-SANCHO R., SÁNCHEZ D., CABELLO R.
• Publication date: 2024/08
• Languages : English
• Keywords : CO2, R744, Propylene, R1270, COP, Transcritical cycle, Expérimentation
• Source: 16^th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
• Formats : PDF

IIR document

Vapor-liquid equilibrium measurements and models for the ternary mixtures of R1234yf + R32 + R125 and R1234yf + R32 + CO2.

• Author(s) : PENG S., WANG E., LI S., YANG Z., DUAN Y.
• Publication date: 2023/02
• Languages : English
• Keywords : Ternary mixture, R1234yf, R32, R125, R744, Equilibrium, Vapour, Liquid, Expérimentation, Modelling
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 146
• Formats : PDF

IIR document

Vapor-liquid equilibrium measurements for the binary mixtures of pentafluoroethane (R125) with 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) and 3,3,3-Trifluoropropene (R1243zf).

• Author(s) : PENG S., LI S., YANG Z., DUAN Y.
• Publication date: 2022/02
• Languages : English
• Keywords : Thermodynamic property, Equilibrium, R1234yf, R1243zf, R125, Expérimentation, Calculation
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 134
• Formats : PDF

Launch of the first R1234ze free-cooling chillers

The “first to market” TurboChill free cooling chillers using low global warming potential (GWP) refrigerant R1234ze are going to be launched.

• Publication date : 2013/12/18

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.

• Publication date : 2013/12/29
• Subjects: Regulation

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. "

• Publication date : 2012/02/27

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.

• Publication date : 2012/11/20

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...

• Publication date : 2021/09/07
• Subjects: Technology

Daimler agrees to use R1234yf to comply with EU regulations

Daimler agrees to use R1234yf but will phase in CO2 from next year.

• Publication date : 2015/12/06

Foam blowing agents: use of R1233zd(E) is expanding

Honeywell announced that TCL, one of China’s largest appliance manufacturers, selected HFO1233zd(E) as foam blowing agent in its domestic refrigerators.

• Publication date : 2017/12/18

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...

• Publication date : 2011/12/30

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.

• Publication date : 2014/11/24

DuPont’s new HFO 1336mzz could replace R123

DuPont has announced it is to start small scale production of a new low GWP HFO which could replace R123.

• Publication date : 2014/05/22
• Subjects: HFCs alternatives

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.

• Publication date : 2013/12/05

Compressors2013 highlights: technical advancements related to refrigeration compressors

During the successful IIR International Conference on Compressors and Coolants held in Casta Papiernicka in June 2013, several papers were dedicated to technological advancements related to refrigeration compressors.

• Publication date : 2014/01/03

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...

• Publication date : 2013/08/27

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”

• Publication date : 2013/02/28

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.

• Publication date : 2014/07/10

International activities: ACRA2006

ACRA2006, an IIR-co-sponsored conference organized by SAREK, was held in Gyeongju, Korea on May 21-23, 2006. Around 300 participants from 9 countries attended and 187 papers were presented. Profs. K. Watanabe, Liansheng Li and Tae Ho Song gave...

• Publication date : 2007/02/12

IIR member news: Johnson Controls YORK chiller optimised for R1233zd(E)

The YORK YZ magnetic bearing centrifugal chiller, produced by Johnson Controls, is said to be the first chiller fully optimized for ultimate performance with the low-global warming potential refrigerant R1233zd(E).

• Publication date : 2019/01/31

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.  

• Publication date : 2023/12/20

IIR member news: Star Refrigeration

After a year’s research project into low GWP cooling, Star Refrigeration proposes a new chiller using R1234ze.

• Publication date : 2014/02/03

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.

• Publication date : 2018/04/19

Now available: IIR-Gustav Lorentzen Conference Papers

Download your copy of the proceedings of the 14th Gustav Lorentzen Conference on Natural Refrigerants. Over 120 technical papers are available!

• Publication date : 2021/01/19
• Subjects: Technology, Environment

Download the latest technical papers from the IIR Cryogenics Conference

Held on 8-11 April this year, the 15th IIR Cryogenics Conference welcomed over 120 guests from more than 22 countries.

• Publication date : 2019/07/02

IIR member news: AFCE

The AFCE published an explanatory document of the F-Gas Regulation.

• Publication date : 2014/12/01
• Subjects: Regulation, HFCs alternatives

Briefs: Frisbee

The launch meeting of the European Union-funded Frisbee (Food Refrigeration Innovations for Safety, consumers Benefit, Environmental impact and Energy optimization along the cold chain in Europe) project was held on September 8-10, 2010, in the...

• Publication date : 2011/02/07

Briefs: Prof. Eckhard Groll

ASHRAE installed new officers and directors at its 2010 Annual Meeting held in Albuquerque, New Mexico, on June 26-30, 2010. Prof. Eckhard Groll (Purdue University) was installed as Director-at-Large to ASHRAE's Board of Directors and will...

• Publication date : 2011/02/07

Briefs: Prof. Clark Bullard

During the Purdue Conferences held on July 12-15, 2010, Prof. Clark Bullard of the University of Illinois in Urbana-Champaign received the Wilbur T. Pentzer Achievement and Leadership Award for outstanding contributions to the growth and...

• Publication date : 2011/02/07

Hydrocarbon refrigerants

Hydrocarbons such as R290 (propane), R600a (isobutane) or R1270 (propene/propylene) are low GWP non-toxic natural refrigerants with excellent thermodynamic properties. They offer an...

• Last update : 2022/06/22
• Langues : French, English
• Themes : Hydrocarbons, Containment, refrigerant charge reduction

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...

• Last update : 2023/09/15
• Langues : French, English
• Themes : HFCs

Ice cream manufacturing, environmental impact and market data

From a physico-chemical point of view, ice cream is a complex, frozen multiphase mixture. The manufacturing process includes several stages of freezing which are described in this...

• Last update : 2023/06/30
• Langues : French, English
• Themes : Ice creams

Additive manufacturing of regenerators for caloric cooling

In many areas of engineering, additive manufacturing allows the production of complex and multifunctional products that could not be manufactured using traditional methods. In the...

• Last update : 2022/09/16
• Langues : French, English
• Themes : Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling)