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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

Premier principe de la thermodynamique.

First law of thermodynamics.

• Author(s) : LALLEMAND A., HABERSCHILL P.
• Publication date: 2016/05
• Languages : French
• Keywords : Thermodynamics, Generality, Energy
• Source: Revue générale du Froid & du Conditionnement d'air - n. 1157

Recommended by the IIR

Thermodynamique appliquée.

Applied thermodynamics

• Author(s) : MELLARI S.
• Publication date: 2022/10
• Languages : French
• Keywords : Thermodynamics, Heat, Work, Enthalpy, Irreversibility, Training, Efficiency
• Formats : PDF

Circuit techniques for thermodynamic analysis.

• Author(s) : KIM N., ALLEN J. B.
• Publication date: 2022/07/15
• Languages : English
• Keywords : Thermodynamics, Equation of state, Calculation, Modelling, Thermoacoustics
• Source: 2022 Purdue Conferences. 26^th International Compressor Engineering Conference at Purdue.
• 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

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

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

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

Recommended by the IIR / IIR document

Thematic file: Thermodynamics of the new refrigerants.

• Author(s) : MCLINDEN M. O.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Natural refrigerant, Thermodynamic property
• Formats : PDF

IIR document

The chemical looping heat pump: Thermodynamic modeling.

• Author(s) : JAMES N. A., BRAUN J. E., GROLL E. A.
• Publication date: 2019/02
• Languages : English
• Keywords : Loop, Thermodynamic property, Heat pump, Performance, Modelling, Condensation, Chemistry
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 98
• 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

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

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

A thermodynamic property model for the R-134a/245fa mixtures.

• Author(s) : AKASAKA R., HIGASHI Y.
• Publication date: 2014/07/14
• Languages : English
• Keywords : R245fa, R134a, Calculation, Thermodynamic property, Model, Mixture, Expérimentation, Refrigerant
• Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Thermodynamic modeling of screw expander in a trilateral flash cycle.

• Author(s) : VASUTHEVAN H., BRÜMMER A.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Thermodynamics, Screw, Modelling, Expander, Leakage
• Source: 2016 Purdue Conferences. 23^rd International Compressor Engineering Conference at Purdue.
• Formats : PDF

A mathematical study presents a general derivation and a quantifcation of the third law of thermodynamics

Two physicists from University College London have provided a derivation of the "unattainability principle", which states that any process cannot reach absolute zero temperature in a finite number of steps.

• Publication date : 2017/03/30

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

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

100th anniversary of psychrometrics

The formula which underpins the relationship between temperature, humidity and dew point - the basis of all air conditioning calculations - marks its 100th anniversary.

• Publication date : 2011/12/28

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

Quantum refrigerators: research is making progress

Two recent studies illustrate the progress of research on quantum refrigerators. Cooling applications for microelectronic compounds could be considered.

• Publication date : 2019/02/28

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

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

Evaluating lubricants for lower GWP refrigerant compressor operation.

Summary of an interesting paper from the recent Purdue conference.

• Publication date : 2017/03/06

Cooling the world’s largest supercomputers

Direct liquid cooling is a highly energy-efficient solution for cooling supercomputers capable of performing millions or billions of billions of calculations per second. Here are two examples in the United States and France.

• Publication date : 2019/12/30

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: General information, Technology

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. Extending the temperature range and application for heat pumps

To promote decarbonation, “high temperature heat pumps should be designed using waste heat and renewables as a driving energy, and environmentally friendly working fluids”, according...

• Publication date : 2023/05/30
• 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

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

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

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

Focus on Commission B1 : Leading the way in thermodynamics and transfer processes

The objectives of Commission B1 on Thermodynamics and Transfer Processes are to provide academic and industrial information and data, and to propose any solutions on thermodynamics and transfer processes.

• Publication date : 2016/04/20

IIR shared a stand at SIFA

On 16-18 November 2021 took place the French SIFA trade fair dedicated to concrete issues about refrigeration, air-conditioning, thermodynamics, and heat pumps. 130 exhibitors and 3,700 participants attended the...

• Publication date : 2021/11/29

Appointments: Prof. Dieter Gorenflo

The Carl von Linde Memorial Gold Medal was awarded to Prof. Dieter Gorenflo, former President of the Commission B1 of the IIR, for outstanding services in the realm of scientific and technical research. He studied and then taught as a professor at...

• Publication date : 2008/02/12

Conference update: Stockholm

The 2nd IIR Workshop on Refrigerant Charge Reduction in Refrigerating Systems will be held in Stockholm, Sweden, on June 16-17, 2010. The main themes are: design of low-refrigerant charge systems thermodynamics in compact heat exchangers; design...

• Publication date : 2010/03/07

Conference update: Stockholm

The 2nd IIR Workshop on Refrigerant Charge Reduction in Refrigerating Systems will be held in Stockholm, Sweden, on June 16-17, 2010. Key themes include: design of low-refrigerant charge systems; thermodynamics in compact heat exchangers; design...

• Publication date : 2010/05/27

Briefs: Karl Stephan

Professor Karl Stephan, former President of Commission B1 and Head of Section B, and member of the Management Committee of the IIR, celebrated his 80th birthday in November 2010. The IIR, along with many national and international organizations,...

• Publication date : 2011/05/20

Statutory meetings

The Beijing Congress The Publications Sub-Committee, the members of the Science and Technology Council who are in the Management Committee and the Management Committee held their meetings in Karlsruhe, Germany, on March 23-24, 2007 thanks to the...

• Publication date : 2007/05/04

The IJR is 30!

The IJR is celebrating its 30th birthday! The first issue was published on May 1, 1978. In his first Editorial, the first Editor-in-Chief, Professor G. G. Haselden, University of Leeds, UK, spoke about the spirit, concept, and aims of the new...

• Publication date : 2008/05/13

IIR Working Party on Refrigerant Charge Reduction in Refrigerating Systems: Join Us!

Suitable design of refrigerating systems has several benefits in terms of limitation of the environmental impact thanks to a reduction in the energy consumption and the limitation of refrigerant emissions. The direct greenhouse effect accounts for...

• Publication date : 2008/10/25

Here are the latest IIR award-winners!

Once every 4 years during each International Congress of Refrigeration, the IIR presents a series of prestigious scientific awards:. Gustav Lorentzen Medal: the prize is awarded to a person with...

• Publication date : 2011/09/15

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

Briefs: Eddie Leonardi

The IIR was deeply saddened to learn of the death of Prof. Eddie Leonardi in December 2008. Eddie was Professor of Mechanical Engineering at the University of New South Wales, Australia, and taught refrigeration, air conditioning, thermodynamics,...

• Publication date : 2009/02/24

Editorial by Didier Coulomb

The 23rd International Congress of Refrigeration (ICR2011) will take place in Prague on August 21-26, 2011. This will be the key refrigeration event in 2011 and will deal with all facets of refrigeration and refrigeration technology. Around...

• 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

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

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

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)