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IIR document

Measurements of pρTx and specific heat capacity cv for (R290 + R1243zf) binary mixtures at temperatures from (292 to 350) K and pressures up to 11 MPa.

• Author(s) : SHENG B., DONG X., ZHAO Y., LI Z., YAN H., ZHONG Q., WANG J., GONG M., SHEN J.
• Publication date: 2020/04
• Languages :
• Keywords : R290, Propane, R1234zf, Thermodynamic property, Temperature, Pressure, Heat capacity, Expérimentation, Mixture
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 112
• Formats : PDF

IIR document

Thermodynamic properties of fluorocarbons: simulations and experiment.

• Author(s) : DOUBEK M., VACEK V.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Fluorine, Carbon, Thermodynamic property, Simulation, Expérimentation, Refrigerant
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Thermodynamic properties of low-GWP alternative refrigerants.

• Author(s) : FUKUSHIMA M., HAYAMIZU H., HASHIMOTO M.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Low GWP, Thermodynamic property, Substitute, Expérimentation, Refrigerant
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Fast and simple calculation of thermodynamic properties of refrigerant using quadrilateral interpolation from preprocessed thermodynamic table.

• Author(s) : KIM C., CHOI S., LIM H., et al.
• Publication date: 2017/04/23
• Languages : English
• Keywords : Calculation, Thermodynamic property, Refrigerant
• Source: 5^th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants.
• Formats : PDF

Patch-based thermodynamic property models for the subcritical region.

• Author(s) : LAUGHMAN C., QIAO H.
• Publication date: 2021/05
• Languages : English
• Keywords : Modelling, Refrigerant, Compression system, R32, Thermodynamic property, Thermodynamic cycle, Density, Temperature
• Source: 2021 Purdue Conferences. 18^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Isothermes de sorption et propriétés thermodynamiques de l’Allium sativum.

Sorption isotherms and thermodynamic properties for Allium sativum.

• Author(s) : LITAIEM J., TOUIL A., ZAGROUBA F.
• Publication date: 2016/03/24
• Languages : French
• Keywords : Garlic, Thermodynamic property, Sorption, Drying, Modelling
• Source: 1st International Refrigeration, Energy and Environment Colloquium. Proceedings: Hammamet, Tunisia, March 24-27, 2016.
• Formats : PDF

Thermodynamic and heat transfer properties of Al2O3 nanolubricants.

• Author(s) : CREMASCHI L., WONG T., BIGI A. M.
• Publication date: 2014/07/14
• Languages : English
• Keywords : Thermal property, Solubility, R410A, Lubricant, Heat transfer, Alumina, Thermodynamic property, Miscibility, Expérimentation
• Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Thermodynamic properties measurement of HFO1132(E).

• Author(s) : SAKODA N., HIGASHI Y.
• Publication date: 2021/06
• Languages : English
• Keywords : HFO, Expérimentation, Thermodynamic property, Critical density, Critical temperature, R1132(E), Saturation
• Source: 2^nd IIR Conference on HFO Refrigerants and Low GWP Blends
• Formats : PDF

IIR document

A thermodynamic property model for R1234yf and propane mixtures.

• Author(s) : AKASAKA R.
• Publication date: 2023/08/21
• Languages : English
• Keywords : Thermodynamic property, R1234yf, Propane, Mixture, Modelling, R290
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

IIR document

Thermodynamic properties of refrigerants using artificial neural networks.

• Author(s) : MORA J. E., PEREZ C., GONZALEZ F. F., et al.
• Publication date: 2014/10
• Languages : English
• Keywords : Equilibrium, Liquid-vapour, Artificial neural network, Chilling, Thermodynamic property, Prediction, Refrigerant
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 46
• Formats : PDF

Thermodynamic properties of low-GWP refrigerant for centrifugal chiller.

• Author(s) : FUKUSHIMA M., HAYAMIZU H., HASHIMOTO M.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Vapour pressure, Measurement, Low GWP, Thermodynamic property, HFO, Refrigerant
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Measurement of thermodynamic properties of ammoniated salts and thermodynamic simulation of resorption cooling system.

• Author(s) : SHARMA R., ANIL KUMAR E.
• Publication date: 2016/07
• Languages : English
• Keywords : Resorption system, Measurement, Ammonia, Thermodynamic property, Salt (generic), Enthalpy, COP
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 67
• Formats : PDF

IIR document

Determination of thermodynamic properties of refrigerants by using molecular simulation and experiment: application to development of predictive thermodynamic models.

• Author(s) : COQUELET C., HOURIEZ C., JAUBERT J-N.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Thermodynamic property, Simulation, Prediction, Expérimentation, Refrigerant
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Fast, stable computation of thermodynamic properties of ammonia-water mixtures.

• Author(s) : RATTNER A. S., GARIMELLA S.
• Publication date: 2016/02
• Languages : English
• Keywords : Ammonia-water, Absorption system, Thermodynamic property, Zeotropic mixture
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 62
• Formats : PDF

Measurements of thermodynamic properties for R1123 and R1123+R32 mixture.

• Author(s) : HIGASHI Y., AKASAKA R.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Measurement, Low GWP, R32, Thermodynamic property, Mixture, Refrigerant
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Heat flowing from a colder to a warmer body without external intervention

Researchers at the University of Zurich have developed a simple device that allows heat to flow temporarily from a cold to a warm object without external intervention by using a “thermal inductor”.

• Publication date : 2019/05/29

Always closer to absolute zero

NIST physicists have cooled a mechanical object to a temperature below the so-called “quantum limit.”

• Publication date : 2017/06/29

Recent overview of research on electrocaloric cooling

A recent literature review presents an overview of research on electrocaloric cooling. The authors addressed the following topics: thermodynamic cycles, electrocaloric materials, experimental devices, numerical...

• Publication date : 2021/01/04
• Subjects: Technology

Latest research on ammonia-based absorption refrigeration systems

A recent article has reviewed literature on absorption chillers that use ammonia as a refrigerant, along with water (H2O), lithium nitrate (LiNO3), and lithium nitrate + water...

• Publication date : 2021/02/25
• Subjects: Technology

R32, a short-term candidate to replace R22 in China?

HFC-32 attracted attention during ICR2011 in Prague: it was the subject of 12 papers. It is the main component of HFC-410A with which it shares similar thermodynamic properties, but at a lower price and with a lower GWP (675).

• Publication date : 2011/12/27

Cool like a butterfly wing

New study demonstrates that butterfly wings contain a network of living cells with specific thermodynamic and thermoregulatory properties. Butterfly wings cool down as a result of low solar absorption combined with efficient radiative heat...

• Publication date : 2020/02/28

Refrigerant news: Dupont XP10

At Chillventa 2010, DuPont announced the development of a new refrigerant for use in commercial refrigeration systems. Opteon™ XP10 is based on HFO-1234yf and is characterized by its lower GWP (close to 600) compared with R134a, as well as...

• Publication date : 2011/02/07

H-fluid as an alternative to HFC-134a?

The new European Directive 2006/40 on emissions from air-conditioning systems in motor vehicles - which bans F-gases with a GWP higher than 150 (such as HFC-134a) as of 2011 for new models of cars - and Californian legislation which is putting...

• Publication date : 2006/11/15

ICR 2019: an overview of current refrigeration research (part I)

Presentation of the main scientific and technical topics covered in the papers of the 25th IIR International Congress of Refrigeration and summary of some of the 14 keynotes.

• Publication date : 2019/09/30
• Subjects: HFCs alternatives

IIR Rankine Conference 2020: Which alternative working fluids for ORC systems?

HFOs (hydrofluoroolefins), HCFOs (hydrochlorofluoroolefins) and hydrocarbons were the main alternatives to HFC245fa presented during the IIR Rankine Conference 2020.

• Publication date : 2020/09/04
• Subjects: HFCs alternatives

Road to COP28. Energy efficiency and recovery of refrigerants

“Sustainability must refer to energy efficiency and circularity”, says Dr Laura Fedele, IIR expert. 

• Publication date : 2023/04/26
• Subjects: Technology, General information

A promising future for nanorefrigerants

A review article published in the IJR highlights the remarkable heat transfer properties of nanorefrigerants, which are leading to significant improvements in the performance of refrigeration systems.

• Publication date : 2018/05/17

An American study tries to identify the best candidates to replace HFC refrigerants in air conditioning.

27 suitably-efficient fluids were found to replace HFCs in air-conditioning systems. However, they all are at least slightly flammable.

• Publication date : 2017/02/24
• Subjects: HFCs alternatives

Reducing the environmental impact of ultra-low temperature refrigeration systems

Ultra-low temperature (ULT) refrigeration systems often use very high-GWP HFCs. Yet, ULT systems are excluded from the scope of the regulations aimed at phasing-down HFCs. An IJR paper reviews the most promising...

• Publication date : 2020/04/05
• Subjects: Environment, HFCs alternatives

Next generation of working pairs in absorption heat pumps

The history and latest developments in working pairs for absorption heat pumps were discussed in a recent review article.

• Publication date : 2023/01/26
• Subjects: Technology

New publications

The IIR has issued 3 new publications: - the 20th Informatory Note on Refrigerating Technologies Magnetic Refrigeration at Room Temperature, written by P. Egolf - Chairman of the IIR working party dedicated to this technology - and Ronald...

• Publication date : 2007/11/20

New IIR Informatory Note. Low-GWP Refrigerants: Status and Outlook

The latest IIR Informatory Note outlines the options available for low-GWP refrigerants and their respective performance. It provides a series of recommendations on refrigerant...

• Publication date : 2022/07/08
• Subjects: HFCs alternatives

The long awaited ICR2015 is underway!

Held every four years, this year ICR2015 welcomes 1,011 conference delegates from 55 countries, making it a truly global refrigeration event.

• Publication date : 2015/08/19

IIR conference on caloric cooling Thermag VIII: highlights

Thermag VIII was an opportunity to present new developments regarding magnetocaloric, electrocaloric and elastocaloric cooling.

• Publication date : 2018/10/18

IC2015 Workshops: An opportunity to join, share and build together

ICR2015: A chance to actively participate in the innovation of refrigeration.

• Publication date : 2015/06/17

ICR 2011 in Prague: a Resounding Success

The 23rd IIR International Congress of Refrigeration held in Prague, on August 21-26, 2011, was highly successful...

• Publication date : 2011/08/30

Activities of IIR’s Commission B1 on “Thermodynamics and Transfer Processes”

Thermodynamics is essential for all topics covered by the IIR.

• Publication date : 2017/02/23

Obituary: André Gac

The IIR is deeply saddened to learn of the passing of André Gac, former IIR Director on July 14th at the age of 98.

• Publication date : 2022/07/20

IIR publishes a new Technical Brief: Domestic heat pumps using hydrocarbons - Current status and market overview in Europe

At a time when the energy transition is at the top of the global agenda, the IIR is publishing a new Technical Brief on domestic hydrocarbon heat pumps. This strategic document...

• Publication date : 2024/11/21
• Subjects: Figures, economy

REAL Alternatives: blended Learning for Alternative Refrigerants

Last week the REAL Alternatives Europe programme partners met at IIR head offices to elaborate plans to translate the e-learning project into more languages.

• Publication date : 2015/06/23

4th IIR Conference on Thermophysical Properties and Transfer Process of Refrigerants: a very successful event

The 4th IIR Conference on Thermophysical Properties and Transfer Process of Refrigerants (TPTPR) was held at TU Delft, the Netherlands, on June 16-19, 2013. 4 keynote lectures and 66 papers were presented during this highy successful...

• Publication date : 2013/08/12

Call for abstracts now open for the IIR-Gustav Lorentzen Conference 2020

Don’t miss the deadline! 14th IIR-Gustav Lorentzen Conference 2020 invites delegates to submit abstracts

• Publication date : 2019/12/19

Activities of the IIR’s Commission B1 on Thermodynamics & transfer processes

The IIR’s Commission B1 has been extremely active in the areas of working parties (WP), sub-commissions, IIR conferences, IIR-co-sponsored conferences and commission business meetings.

• Publication date : 2013/09/02

Cryogenics and Low-Temperature Physics: New Horizons and Challenges

This Focus written by Ralf Herzog*, President of the IIR’s Cryophysics, Cryoengineering commission (Commission A1) for the Newsletter of the IIR is the third in a series of presentations of the activities and hot research topics handled by the...

• Publication date : 2012/09/21

Activities of IIR’s Commission B2 on “Refrigerating Equipment”

Focus on the IIR's Commission B2

• Publication date : 2017/07/11

Thermophysical properties of hydrocarbon refrigerants

Thermophysical properties of over 20 hydrocarbon refrigerants, including single-component and blends.

• Last update : 2022/06/17
• Langues : English
• Themes : Hydrocarbons, Blends

Thermophysical properties of HFC refrigerants

Thermophysical properties of over 100 HFC refrigerants, including single-component and blends.

• Last update : 2022/06/17
• Langues : English
• Themes : HFCs, Blends, HFO et HCFO

Thermophysical properties of HFO refrigerants

Thermophysical properties of over 50 HFO refrigerants, including single-component and blends.

• Last update : 2022/06/17
• Langues : English
• Themes : Blends, HFO et HCFO

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

Liquefied Natural Gas: production process and cold energy recovery

Liquefied natural gas (LNG) is natural gas that has been cooled to about -160 °C and turned into a liquid to facilitate transportation and storage. A typical LNG supply chain...

• Last update : 2023/06/23
• Langues : French, English
• Themes : LNG and LPG

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)