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IIR document

Visual experimental research on the effect of nozzle orifice structure on r124-DMAC absorption process in a vertical bubble tube.

• Author(s) : JIANG M., XU S., WU X., et al.
• Publication date: 2016/08
• Languages : English
• Keywords : Structure, Bubble, Nozzle, Vertical tube, Absorbent, R124, Orifice, Expérimentation, DMF, DMA
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 68
• Formats : PDF

IIR document

Experimental research on heat transfer performance of R124-DMAC bubble absorption in a visual vertical tube absorber.

• Author(s) : JIANG M., XU S., WU X.
• Publication date: 2017/04/23
• Languages : English
• Keywords : Working fluid, Bubble, Vertical tube, Heat transfer, Absorption, R124, Performance, Mixture, Expérimentation, Thermal load
• Source: 5^th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants.
• Formats : PDF

IIR document

Experimental investigation on heat and mass transfer in a vertical glass bubble absorber with R124-NMP pair.

• Author(s) : WANG W., XU S., WU X., JIANG M.
• Publication date: 2020/04
• Languages : English
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 112
• Formats : PDF

Viscosity of refrigerants and other working fluids from residual entropy scaling.

• Author(s) : BELL I., LAESECKE A.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Working fluid, Viscosity, Measurement, R124, Entropy, Refrigerant
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

EXPERIMENTAL VAPOR PRESSURES AND P-V-T PROPERTIES OF REFRIGERANTS R123,R124 AND R125.

• Author(s) : BARONCINI C., et al.
• Publication date: 1991/08/10
• Languages : English
• Keywords : Calculation, Measurement, R125, R124, R123, Thermodynamic property, Refrigerant
• Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
• Formats : PDF

Experimental study of forced convective boiling for non-azeotropic refrigerant mixtures R22/R124 in horizontal smooth tube.

• Author(s) : CHIOU C. B., LU D. C., LIAO C. Y., et al.
• Publication date: 2009/06
• Languages : English
• Keywords : Horizontal tube, Heat transfer coefficient, Correlation, Comparison, Bare pipe, R22, R124, Zeotropic mixture, Expérimentation, Forced convection, Refrigerant, Boiling
• Source: Applied Thermal Engineering - vol. 29 - n. 8-9

The performance of a triple pressure level absorption cycle with working fluids based on the absorbent DMEU and the refrigerants R-22, R-32, R-124, R-125, R-134a and R-152a.

• Author(s) : JELINEK M., LEVY A., BORDE I.
• Publication date: 2008/08
• Languages : English
• Keywords : R134a, Comparison, Calculation, Absorption system, Absorbent, R32, R22, R152a, R125, R124, Performance, COP, Refrigerant
• Source: Applied Thermal Engineering - vol. 28 - n. 11-12

IIR document

Working fluids for an absorption system based on R124 (2-chloro-1,1,1,2,-tetrafluoroethane) and organic absorbents.

• Author(s) : BORDE I., JELINEK M., DALTROPHE N. C.
• Publication date: 1997/06
• Languages : English
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 20 - n. 4
• Formats : PDF

IIR document

PERFORMANCE TEST OF R12 ALTERNATES IN A HERMETIC COMPRESSOR.

• Author(s) : ZHENG J., PELAVA J. W.
• Publication date: 1991/08/10
• Languages : English
• Keywords : R134a, R124, R12, Substitute, Performance, Mixture, Refrigerant, Hermetic compressor
• Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
• Formats : PDF

IIR document

Comparative assessment of HFC-134a and some refrigerants as alternatives to CFC-12.

• Author(s) : DEVOTTA S., GOPICHAND S.
• Publication date: 1992
• Languages : English
• Keywords : Rankine, R134a, R22, R152a, R142b, R134, R124, R12, Substitute
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 15 - n. 2
• Formats : PDF

IIR document

Prediction of thermophysical properties of CFC-free refrigerants.

• Author(s) : JELINEK M., DALTROPHE N. C., BORDE I.
• Publication date: 1993/05/12
• Languages : English
• Keywords : R134a, CFC, Calculation, R32, R124, Thermodynamic property, Substitute, Refrigerant
• Source: Energy Efficiency in Refrigeration and Global Warming Impact.
• Formats : PDF

IIR document

EXPERIMENTS ON THE PERFORMANCE OF MIXTURES BASED ON HFC152A IN DOMESTIC FREEZER EQUIPMENT.

• Author(s) : KUIJPERS L. J. M., WIT J. A., BENSCHOP A. A. J.
• Publication date: 1991/08/10
• Languages : English
• Keywords : R22, R152a, R124, Substitute, Performance, Mixture, Refrigerant, Home freezer
• Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
• Formats : PDF

IIR document

Thermodynamic properties of HCFC124.

• Author(s) : VRIES B. de, TILLNER-ROTH R., BAEHR H. D.
• Publication date: 1995/08/20
• Languages : English
• Keywords : Calculation, Measurement, R124, Thermodynamic property, Substitute, Equation of state, Refrigerant
• Source: For a Better Quality of Life. 19th International Congress of Refrigeration.
• Formats : PDF

IIR document

PERFORMANCE OF ALTERNATIVE REFRIGERANTS FORCFC12 IN STATIONARY REFRIGERATION APPLICATIONS.

• Author(s) : LAWSON C. C.
• Publication date: 1991/08/10
• Languages : English
• Keywords : R134a, R22, R152a, R124, R12, Substitute, Mixture, Refrigerating plant, Refrigerant
• Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
• Formats : PDF

IIR document

Thermodynamic analysis of binary mixtures as R22 substitutes in water-cooled chillers.

• Author(s) : BHUSARI S. V., SHERIF S. A.
• Publication date: 2003/08/17
• Languages : English
• Keywords : R143a, Efficiency, Research, R124, Optimization, Binary mixture, COP, Refrigerant, Concentration
• Source: 21^st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
• Formats : PDF

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

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

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.

• Publication date : 2017/05/24

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

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

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

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

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

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

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

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

Alternative mixtures for R134a

A NIST study identifies 23 non-flammable or slightly flammable mixtures as R134a alternatives in air conditioning.

• Publication date : 2019/08/29

New R134a alternatives in mobile air conditioning

Two new refrigerant blends are considered as an R134a alternative and "virtually non-flammable".

• Publication date : 2014/12/18

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

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

Editorial by Didier Coulomb

A new year is beginning. Perhaps it will be a difficult year because the economic crisis is far from over. A lot of challenges and maybe opportunities lie ahead, because the refrigeration and air-conditioning sector, which needs to address...

• Publication date : 2011/02/07

Conference reports

Several IIR-co-sponsored events took place at the end of 2010: - The Pôle Cristal Symposium held in Dinan, France, on October 7-8, 2010 attracted 220 attendees. Sixteen papers were presented. - The International Congress...

• Publication date : 2011/02/07

Briefs: Prof L Rey

Prof. Louis Rey, former President of Section C, Biology and food technology, then Vice-President of the IIR's Science and Technology Council, and President of a sub-commission devoted to the biological and medical applications of...

• Publication date : 2011/02/07

Briefs: Philippe Lebrun is “Engineer of the Year”

Philippe Lebrun, a member of the Management Committee of the IIR and Head of Section A of the IIR (Cryology and Gas Processing), was awarded the "Prix Ingénieur de l'Année 2010" in the "Science" category, by the French magazine Usine...

• Publication date : 2011/02/07

Briefs: Catalogue of Publications 2010-2011

The Catalogue of Publications 2010-2011 is now available! Order it via iif-iir@iifiir.org or surf on www.iifiir.org to order the IIR's latest publications.

• Publication date : 2011/02/07

News from IIR members: The Danish Refrigeration Association is 100!

In 2011, the Danish Refrigeration Association is celebrating its 100th anniversary. For 100 years the association has been the national forum for all aspects of refrigeration and has arranged numerous events for the benefit of its members. The...

• Publication date : 2011/02/07

News from IIR members: Michael Bellstedt

Michael Bellstedt is taking over from Stephen White as Delegate of Australia to the IIR and Chair of the Australian National Committee for the IIR. The IIR expresses its gratitude to Stephen for his actions in favour of the IIR.

• Publication date : 2011/02/07

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.  

• Publication date : 2022/10/27
• Subjects: HFCs alternatives

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

Cryogenic nitrogen in the food and beverage industry

The adoption of cryogenic processes in the food and beverage industry is predominantly driven by liquid nitrogen (LIN), and it is the preferred candidate for food chilling and...

• Last update : 2023/06/09
• Langues : French, English
• Themes : Freezing of foodstuffs

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