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IIR document

Correlation between grain connectivity, packing density, and critical current density in MgB2 synthesized by in situ/ex situ combination technique.

• Author(s) : SHAH S., SHAHABUDDIN, ALZAYED N. S.
• Publication date: 2019/05/08
• Languages : English
• Keywords : Superconduction, Boron, Magnesium, Expérimentation, Current density, Critical density
• Source: Cryogenics 2019. Proceedings of the 15^th IIR International Conference: Prague, Czech Republic, April 8-11, 2019.
• Formats : PDF

IIR document

PVT Properties, Saturated Densities, and Critical Parameters of trans-1,2-Difluoroethene (R1132(E)) + 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf).

• Author(s) : SAKODA N., HIGASHI Y.
• Publication date: 2023/08/21
• Languages : English
• Keywords : Mixture, Critical density, R1132(E), R1234yf, Expérimentation, Equation of state, Thermodynamic property, Critical pressure, Critical temperature, Critical point, HFO, Low GWP
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

IIR document

Measurements of P?T properties, vapor pressures, saturated densities, and critical parameters for R 1234ze(Z) and R 245fa.

• Author(s) : HIGASHI Y., HAYASAKA S., SHIRAI C., et al.
• Publication date: 2015/04
• Languages : English
• Keywords : Vapour pressure, R245fa, Measurement, Density, R1234ze, Thermodynamic property, Critical point
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 52
• Formats : PDF

IIR document

Thermodynamic properties of HFO-1336mzz(E) (trans-1,1,1,4,4,4-hexafluoro-2-butene) at saturation conditions.

• Author(s) : TANAKA K., ISHIKAWA J., KONTOMARIS K. K.
• Publication date: 2017/10
• Languages : English
• Keywords : Vapour pressure, Critical pressure, Critical temperature, Thermodynamic property, Expérimentation, Critical density, Refrigerant
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 82
• Formats : PDF

IIR document

Thermodynamic properties of 1,1,1,2-tetrafluoroethane (R-134a) + 2,3,3,3-tetrafluoropropene (R-1234yf) mixtures: Measurements of the critical parameters and a mixture model based on the multi-fluid approximation.

• Author(s) : AKASAKA R., HIGASHI Y., YAMADA Y., et al.
• Publication date: 2015/10
• Languages : English
• Keywords : R134a, R1234yf, Critical pressure, Critical temperature, Thermodynamic property, Model, Mixture, Critical density
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 58
• Formats : PDF

IIR document

Experimental determination of the critical parameters for trans-1-chloro-3,3,3-trifluoroprop-1-ene [R1233zd(E)] and cis-1-chloro-2,3,3,3-tetrafluoroprop-1-ene [R1224yd(Z)].

• Author(s) : TANAKA K., AKASAKA R.
• Publication date: 2021/11
• Languages : English
• Keywords : HFO, HCFO, R1224yd(Z), R1233zd(E), Expérimentation, Critical pressure, Critical temperature, Critical density
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 131
• 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

High-temperature working fluids for heat pumps – A way to select the optimal fluid for a given application.

• Author(s) : PACHAI A. C., HAFNER A., ARPAGAUS C.
• Publication date: 2023/04/27
• Languages : English
• Keywords : High temperature, Hydrocarbon, Heat pump, Standard, Critical temperature, Critical pressure, Critical density, Refrigerant
• Source: 10^th IIR Conference on Ammonia and CO₂ Refrigeration Technologies.
• Formats : PDF

IIR document

A new apparatus for measurement of the critical p-ρ-T properties based on the variable-volume method.

• Author(s) : YAO X., DONG X., ZHAO Y., SHEN J., GONG M.
• Publication date: 2022/04
• Languages : English
• Keywords : R134a, Thermodynamic property, Nitrogen, R32, Expérimentation, Variable volume, Critical density, Critical pressure, Critical temperature
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 136
• Formats : PDF

IIR document

Saturated liquid density equation for pure refrigerants including CFCs, HCFCs, HFCs, HCs, HFOs, HFEs, PFAs and ISs based on the scaling law and the law of rectilinear diameter.

• Author(s) : ZHANG H., GAO B., LI H., et al.
• Publication date: 2018/03
• Languages : English
• Keywords : Saturation, Liquid, Density, Critical temperature, Modelling, Refrigerant
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 87
• Formats : PDF

IIR document

Measurements of PvT properties, saturated densities, and critical parameters of R1132(E).

• Author(s) : SAKODA N., PERERA U., THU K., HIGASHI H.
• Publication date: 2022/08
• Languages : English
• Keywords : R1132(E), Pressure, Volume, Temperature, Measurement, Critical state, Expérimentation
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 140
• Formats : PDF

IIR document

Critical properties and vapor-liquid equilibrium of two near-azeotropic mixtures containing HFOs.

• Author(s) : YANG Z., VALTZ A., COQUELET C., WU J., LU J.
• Publication date: 2022/06
• Languages : English
• Keywords : Azeotropic mixture, Low GWP, Vapour, Liquid, Equilibrium, Thermodynamic property, Critical temperature, Critical pressure, Critical density, Modelling, Expérimentation, HFO, R1234yf, R1243zf, R245cb
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 138
• Formats : PDF

IIR document

Thermophysical property measurements for R1234yf + R1234ze(E) mixture.

• Author(s) : HIGASHI Y.
• Publication date: 2015/08/16
• Languages : English
• 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
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Measurement of critical properties for the binary mixture of R744 (carbon dioxide) + R1234ze(E) (trans-1,3,3,3-tetrafluoropropene).

• Author(s) : YAO X., SHEN J., KANG H., TANG B., LI Z., LI J., DONG X., GONG M.
• Publication date: 2023/08
• Languages : English
• Keywords : Measurement, R744, R1234ze(E), Binary mixture, Critical temperature
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 152
• Formats : PDF

Data centre cooling

Data processing environments were estimated in 2006 to consume about 1.5% of the total electricity in the US. Data centre power consumption has roughly doubled in the last 5 years and is expected to double again in the next 5 years to more than...

• Publication date : 2009/02/25

Brief: 12th c-dig meeting

Uusikaupunki in Finland was the setting for the 12 th c-dig meeting in April 2005 attended by 55 delegates. Roughly half the presentations were by Finnish companies, reflecting the tremendous focus on carbon dioxide in the region in recent years....

• Publication date : 2005/06/14

Underground storage of liquid CO2

Dispensing of CO2 by storing it underground usually implies placing it in aquifer rocks deep enough (-800 m) to achieve sufficient pressure to maintain the CO2 in a supercritical (fluid) phase. This approach has many shortcomings as in this form,...

• Publication date : 2006/11/15

IIR 2023 conference in Ohrid: focus on CO2 heat pumps

As demonstrated at the last IIR conference in Ohrid , heat pumps are a potential development area for the use of CO2, in particular for the thermal management of electric vehicles. 

• Publication date : 2023/05/26
• Subjects: Technology

Optimisation of a heat pump for satellite cooling

Satellites are deployed into near earth orbit in order to provide a platform for a wide range of missions, including telecommunications systems, surveillance systems and astronomical systems.These systems have seen a large increase in...

• Publication date : 2015/06/19

Noise reduction strategies for screw compressors

The operating noise of twin-screw compressors is an important issue that may limit their scope of application. Two recent IJR papers suggest several noise reduction methods and analyse their...

• Publication date : 2021/05/31

Spray freeze-drying technique for the manufacturing of pharmaceutical products

Some biopharmaceuticals such as vaccines have a short shelf life and must be handled with care. A recent literature review presents the spray freeze-drying technique as an interesting option for optimising the...

• Publication date : 2020/12/14
• Subjects: Technology

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

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

A possible major step in the quest of room-temperature superconductivity

Two researcher teams have just reported experiments indicating that a hydride of lanthanum compressed to 1.7 to 1.85 million bar has a critical temperature of 250–260 K (-23 – -13°C).

• Publication date : 2019/01/31

New IIR publication: Compendium

The Food Research Institute of Prague and the IIR have co-published a compendium entitled "Thermophysical Properties of Food: Selected Fruits and Vegetables". This book presents a critical literature review of data on the freezing point, density,...

• Publication date : 2005/02/11

Past events: The IIR around the world, August and September 2024

A look back at the IIR’s latest events during conferences (Gustav Lorentzen, Thermag, Compressors) and during sponsored vents (CHPC).

• Publication date : 2024/10/07

New design for the IJR but still quality papers!

As well as original research papers the IJR also includes review articles, papers presented at IIR conferences, short reports and letters describing preliminary results and experimental details, and letters to the Editor on recent areas of...

• Publication date : 2019/11/20