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Le mélange, huile et fluide frigorigène, a une influence sur le rendement des compresseurs.

Refrigerant and oil mixture has an impact on compressors' performance.

• Author(s) : WUJEK S. S., BOWERS C. D., OKARMA P., et al.
• Publication date: 2016/11
• Languages : French
• Source: Revue générale du Froid & du Conditionnement d'air - n.1160

IIR document

Empirical models for efficiency and mass flow rate of centrifugal compressors.

• Author(s) : FANG X., CHEN W., ZHOU Z., et al.
• Publication date: 2014/05
• Languages : English
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 41
• Formats : PDF

High efficiency inverter scroll compressors.

• Author(s) : MURAKAMI Y., KITAURA H., MATSUKAWA K., et al.
• Publication date: 2016/07/11
• Languages : English
• Source: 2016 Purdue Conferences. 23^rd International Compressor Engineering Conference at Purdue.
• Formats : PDF

A study on novel high efficiency vane compressor.

• Author(s) : HU Y., XU J., LUO F., et al.
• Publication date: 2018/07/09
• Languages : English
• Source: 2018 Purdue Conferences. 24^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

Review on ejector efficiencies in various ejector systems.

• Author(s) : LIU F.
• Publication date: 2014/07/14
• Languages : English
• Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Linear compressor discharge manifold design for high thermal efficiency.

• Author(s) : LILIE D. E. B., PUFF R., BORTOLI M. G. D. de
• Publication date: 2016/07/11
• Languages : English
• Source: 2016 Purdue Conferences. 23^rd International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

Compressor efficiency with cylinder slenderness ratio of rotary compressor at various compression ratios.

• Author(s) : NOH K. Y., MIN B. C., SONG J. S., et al.
• Publication date: 2016/10
• Languages : English
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 70
• Formats : PDF

Improvement of the efficiency of twin-screw refrigeration compressors by means of dual lead rotors.

• Author(s) : UTRI M., BRÜMMER A.
• Publication date: 2016/07/11
• Languages : English
• Source: 2016 Purdue Conferences. 23^rd International Compressor Engineering Conference at Purdue.
• Formats : PDF

Volumetric efficiency improvement by overflow in rolling piston compressor.

• Author(s) : WANG W., HUANG G., ZHANG Y.
• Publication date: 2014/07/14
• Languages : English
• Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
• Formats : PDF

Analysis of round-trip efficiency of an HVAC-based virtual battery.

• Author(s) : RAMAN N. S., BAROOAH P.
• Publication date: 2018/07/09
• Languages : English
• Source: 2018 Purdue Conferences. 5^th International High Performance Buildings Conference at Purdue.
• Formats : PDF

Development of large capacity and high efficiency rotary compressor.

• Author(s) : JAFET FERDHY M., TOSHIMASA A., SHOUGO S., et al.
• Publication date: 2018/07/09
• Languages : English
• Source: 2018 Purdue Conferences. 24^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

Performance and efficiency of combined cycle power plant.

• Author(s) : MOMIN ELHADI A., SIDDHARTH P., AYA MOHAMMED HASSAN M.
• Publication date: 2022/07/10
• Languages : English
• Source: 2022 Purdue Conferences. 19^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Thermodynamic model for reciprocating compressors with the focus on fluid dependent efficiencies.

• Author(s) : ROSKOSCH D., VENZIK V., ATAKAN B.
• Publication date: 2017/12
• Languages : English
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 84
• Formats : PDF

IIR document

High efficiency air cooled heat exchangers for CO2 applications.

• Author(s) : FILIPPINI S., MERLO U., MARIANI G., et al.
• Publication date: 2019/08/24
• Languages : English
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

Speed-controlled compact screw compressors with optimized part-load efficiency.

• Author(s) : REICHLE M., PFAFFL J.
• Publication date: 2017/07/20
• Languages : English
• Source: 8th international conference on compressors and refrigeration, 2017.
• Formats : PDF

Improving cooling towers' efficiency

An article published in Water Technology provides information on cooling towers and their operation.

• Publication date : 2018/01/19

High-efficiency inverter scroll compressors

Summary of an interesting paper from the 2016 Purdue Conference on compressors.

• Publication date : 2017/03/08

Photovoltaic thermal system combined with adsorption cooling achieves 75% efficiency

Researchers from IBM Zurich research laboratory combined photovoltaic (PV) and solar thermal techniques in a high-concentration PV thermal (HCPVT) system to achieve efficient electrical cooling output without the need for extra cells.

• Publication date : 2013/10/25

Spain ratifies the Kigali Amendment

Spain becomes the 150th country to ratify the Kigali Amendment.

• Publication date : 2023/06/19
• Subjects: Regulation

Egypt ratifies the Kigali Amendment

Egypt becomes the 152nd country to ratify the Kigali Amendment.

• Publication date : 2023/09/01
• Subjects: Regulation

Djibouti ratifies the Kigali Amendment

Djibouti becomes the 157th country to ratify the Kigali Amendment.

• Publication date : 2024/03/22
• Subjects: Developing country, Regulation

Thailand ratifies the Kigali Amendment

Thailand becomes the 158th country to ratify the Kigali Amendment.

• Publication date : 2024/04/12
• Subjects: Regulation

Guatemala ratifies the Kigali Amendment

Guatemala becomes the 156th country to ratify the Kigali Amendment.

• Publication date : 2024/01/19
• Subjects: Regulation

Kenya confirms acceptance of the Kigali Amendment

Kenya becomes the 154th country to ratify the Kigali Amendment.

• Publication date : 2023/12/15
• Subjects: Regulation

US ratifies the Kigali Amendment

Following its successful passage through the Senate in September, the USA has now ratified the Kigali Amendment to the Montreal Protocol.

• Publication date : 2022/11/03

The UAE ratifies the Kigali Amendment

The United Arab Emirates (UAE) becomes the 159th country to ratify the Kigali Amendment.

• Publication date : 2024/05/24
• Subjects: Regulation

Republic of Korea ratifies the Kigali Amendment

South Korea becomes the 147th country to ratify the Kigali Amendment.

• Publication date : 2023/01/23
• Subjects: Regulation

Benefits of energy-efficient refrigeration and of the Kigali Amendment

Supported by figures, a recent IEA-UN Environment Programme report highlights the growing importance of refrigeration in the world and the necessity to deliver efficient and climate-friendly refrigeration for...

• Publication date : 2020/09/04
• Subjects: Environment

US Senate votes to ratify the Kigali Amendment

The historic vote on 21st September means that the US will soon join the 137 parties that have already ratified the Kigali Amendment. 

• Publication date : 2022/10/03
• Subjects: Regulation

Kigali Amendment: summary of the countries that have ratified

42 countries have ratified the Kigali amendment to the Montreal Protocol.

• Publication date : 2018/08/30
• Subjects: HFCs alternatives, Regulation

Member news: Daikin introduces EWYS-4Z: High-Efficiency Cooling and Heating Solution for Industrial and Commercial Needs

The polyvalent EWYS-4Z cooling and heating unit, which runs on R513A, is designed for superior energy efficiency and reduced noise for industrial and commercial applications. 

• Publication date : 2024/08/01

Encyclopedia Update: Latest Kigali Amendment Ratification Status by Country

Using the latest data from UNTC, we have compiled an interactive list of countries that have ratified the Kigali agreement. 

• Publication date : 2024/07/11
• Subjects: Regulation

Invitation to join the IIR working group: Solid-state cooling and heating

Established last year, this latest IIR working group aims to promote international research collaboration to provide energy efficient and environmentally friendly solutions for a variety of solid-state...

• Publication date : 2023/05/02
• Subjects: Technology

Experience the unforgettable in Japan at ICR2015: It’s not just about refrigeration, it’s also about fun!

ICR2015: Discover the plenary speakers, technical tours, and popular tours and activities

• Publication date : 2015/05/06

LNG2023: Registration is open!

Explore the programme overview and secure your spot at LNG2023. Early Bird registration ends April 7, 2023!

• Publication date : 2023/02/17
• Subjects: Technology

New IIR Informatory Note on Solar Cooling 

Discover the latest IIR Informatory Note that provides a detailed analysis of solar cooling: an environmentally friendly and promising technology.

• Publication date : 2020/12/22
• Subjects: Technology

New IIR Informatory Note on Refrigerant Charge Reduction

Now available for IIR members! The 25th IIR Informatory Note, the latest in the series on Refrigeration Technologies.

• Publication date : 2014/05/28

JSRAE visit to Paris: A new chapter in refrigeration collaboration

From 20 to 27 June 2024, the Japanese Society of Refrigeration and Air Conditioning Engineers (JSRAE) visited Paris to meet with the French Association of Refrigeration (AFF). A delegation from JSRAE included representatives from Tokyo...

• Publication date : 2024/06/27

Ammonia and CO2 Refrigeration Technologies conference papers now available to download

Ammonia and CO2 Refrigeration Technologies conference papers now available to download

• Publication date : 2019/06/20

IIR website: consult our courses!

The “Services and expertises” section of the IIR website includes a section on courses and training. The courses are among the most downloaded documents in 2022! 

• Publication date : 2023/02/17
• Subjects: General information

Discover the 33rd IIR Informatory Note on "Cogeneration/Trigeneration"

This Informatory Note discusses the operating principles of cogeneration and trigeneration as well as their advantages and challenges.

• Publication date : 2017/01/17

IIR Congress 2019: The refrigeration event of the year

Taking place on August 24-30, 2019 in Montreal (Canada), birthplace of the 1987 Montreal Protocol, the IIR Congress 2019 will be organised under the theme “Refrigeration for Human Health and Future Prosperity" and will focus on the current global...

• Publication date : 2019/07/30

IIR’s contribution and key outcomes at COP29

The International Institute of Refrigeration actively participated in COP29/CMP19/CMA6 held in Baku, Azerbaijan, from 11 November to 22 November 2024, contributing to key discussions and fostering discussions...

• Publication date : 2024/12/17
• Subjects: Regulation, Environment

Highlights from the 46th Montreal Protocol OEWG: Addressing Ozone Depletion and Climate Change Challenges

The 46th meeting of the Open-ended Working Group (OEWG) of the Parties to the Montreal Protocol took place in Montreal from 8 to 12 July 2024. The IIR took part of the event.  

• Publication date : 2024/08/01

Professional forums on cryo-sciences: Experts and young researchers alike

Although significant progress has been made in cold application in life sciences driven by new solutions in the production, storage and handling of bio-products along the entire production chain all the way up to the end-user, there are still many...

• Publication date : 2017/03/01

Kigali Amendment status per country

List of the 163 countries that have accepted, approved or ratified the Kigali Amendment as of November 15, 2024.

• Last update : 2024/11/15
• Langues : English
• Themes : Regulations and standardization (Montreal and Kyoto Protocols…)

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

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

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)

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