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IIR document
Experimental investigation on the phase behavior of DME/ [P6,6,6,14][Cl] and thermodynamic analysis for absorption refrigeration system.
A natural refrigerant DME and HC eco-efficient mixture alternative.
Propylene and DME solubility in PAG oil: Experimental investigations and simplified modeling.
Experimental results on a chiller using a CO2-DME mixture.
Experimental investigations and modeling of Propylene and DME solubility in PAG oil.
Experimental study of liquid phase heat capacity of dimethyl ether and triethylene glycol solution.
Exploración de la mezcla RE170/R600: mejora de la eficiencia como alternativa al R600a.
Exploring the use of RE170/R600 blend as an alternative to R600a for improved efficiency.
Recommended by the IIR / IIR document
A proposal for a non-flammable, fluorine-free, CO2-based mixture as a low TEWI refrigerant.
New environment friendly working pairs of dimethyl ether and ionic liquids for absorption refrigeration with high COP.
Experimental campaign on non-fluorinated refrigerant mixtures in a low-charge heat pump.
Natural refrigerant mixtures in low-charge heat pumps: An analysis of the potential for performance enhancements.
Improving R600a efficiency: RE170/R600 natural mixture experimental analysis.
Investigation of a heat pump dishwasher with Natural Refrigerant Mixture.
Modelling natural refrigerant mixtures for residential heat pump applications in Python.
Performance of heat pumps using pure and mixed refrigerants with maldistribution effects in plate heat exchanger evaporators.
Refrigeration sector monitoring
1875 results
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.
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.
Guatemala ratifies the Kigali Amendment
Guatemala becomes the 156th country to ratify the Kigali Amendment.
Djibouti ratifies the Kigali Amendment
Djibouti becomes the 157th country to ratify the Kigali Amendment.
Spain ratifies the Kigali Amendment
Spain becomes the 150th country to ratify the Kigali Amendment.
Egypt ratifies the Kigali Amendment
Egypt becomes the 152nd country to ratify the Kigali Amendment.
Thailand ratifies the Kigali Amendment
Thailand becomes the 158th country to ratify the Kigali Amendment.
The UAE ratifies the Kigali Amendment
The United Arab Emirates (UAE) becomes the 159th country to ratify the Kigali Amendment.
Kenya confirms acceptance of the Kigali Amendment
Kenya becomes the 154th country to ratify the Kigali Amendment.
Republic of Korea ratifies the Kigali Amendment
South Korea becomes the 147th country to ratify the Kigali Amendment.
Kigali Amendment: summary of the countries that have ratified
42 countries have ratified the Kigali amendment to the Montreal Protocol.
Kigali Amendment impact on global warming
The 8th Emissions Gap Report acknowledges the potential contribution short-lived climate pollutants (SLCPs) could make in the global effort to keep the planet’s warming well below 2 °C compared to pre-industrial levels.
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...
Kigali amendment : US industry expresses its concerns in a letter to vice-president Mike Pence.
According to The Heating Ventilation Air Conditioning and Refrigeration (HVACR) Alliance Industry, the Senate ratification of the Kigali Amendment should be one of 2017 legislative priorities for the Donald Trump administration.
HFC phase-down: update on the Kigali Amendment and the EU F-gas Regulation
In the European Union, the F-gas Regulation’s objectives were broadly respected in 2017; at an international level, the Kigali Amendment came into force on January 1, 2019, with currently 67 ratifying states.
IIR news
508 results
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.
IIR brings its expertise to SophiA’s training in Cameroon
The second capacity building session for SophiA trainers took place in Yaoundé, Cameroon, from January 20 to 24, 2025. The online presentation given by IIR on natural refrigerants in...
Visit: Cameroon
In November 2004, Philippe Mbesse, the Delegate of Cameroon to the IIR, and Didier Coulomb, met the Ambassador of Cameroon to France, His Excellency Mr Pascal Biloa Tang, in order to strengthen the links between Cameroon and the IIR.
Refrigeration Fundamentals on sale!
The IIR's latest course, Refrigeration Fundamentals - Educational Course, will be available within a few weeks. Refrigeration Fundamentals, by André Pilatte - Delegate of Belgium to the IIR and Professor at the Faculté Polytechnique de Mons -...
Valuable publications: Refrigeration Fundamentals
Refrigeration Fundamentals: this IIR course deals with refrigeration fundamentals, components of refrigeration plants, the refrigerants and lubricants used, and control systems. It is an attractive and valuable teaching tool that technicians and...
Philippe Lebrun to be awarded the Kamerlingh Onnes Medal of Honour
The Kamerlingh Onnes Medal of Honour will be presented to Dr Philippe Lebrun of CERN during the 10th-IIR Gustav Lorentzen Conference on Natural Working Fluids to be held in Delft, the Netherlands on June 25-27, 2012.
IIR member subscription to the International Journal of Refrigeration just got better!
Since January 2017, not only will IIR members continue to receive the hard copy of the journal but IIR membership will now also give members access to the complete archives of the IJR online.
Member news: Mexichem Fluor changes name to Koura
The Mexichem branch specialized in the development and manufacturing of fluorinated products changes its name to become Koura.
24th Conference of the Parties to the United Nations Framework Convention on Climate Change in Poland
The 24th Conference of the Parties to the United Nations Framework Convention on Climate Change was held in Katowice, Poland, on December 3-14. Didier Coulomb, director of the IIR, made a statement.
LNG fundamentals explained in the Encyclopedia of refrigeration
The latest entry in the IIR’s online Encyclopedia of refrigeration is a thematic file presenting LNG production processes, and cold energy recovery applications.
Three educational and awareness-raising events within the framework of INDEE+ project in 2021
For the INDEE+ project, the end of the year 2021 was marked by several educational events aiming to raise awareness of the application of clean cooling systems offered by the CO2/R744 refrigeration...
Paris Agreement adopted during COP21: an accepted common framework for all nations
The Paris Agreement which was adopted during the Conference of Parties (COP21) on climate change is of the utmost importance.
Review of F-gas regulation - IIR contribution
The IIR has responded to the European Commission consultation “Fluorinated greenhouse gases – review of EU rules (2015-20)” which aims to collect opinions and suggestions about the update of the F-gas Regulation...
Calling all students! It’s time to send in your application to the Best student paper competition at ICR 2023
If you are an undergraduate or graduate student and your paper has been accepted to the 2023 IIR Congress, apply and you could win a cash prize of €500 and complimentary registration to Congress. Apply by June...
The IIR publishes two new IIR Informatory Notes on Energy Recovery!
The International Institute of Refrigeration (IIR) has just published two new Informatory Notes on energy recovery: one on Energy Recovery in Mechanical Ventilation Systems and the other one on Air-to-Air Energy...
Encyclopedia of Refrigeration
18 results
Kigali Amendment status per country
List of the 163 countries that have accepted, approved or ratified the Kigali Amendment as of November 15, 2024.
Cryogenics in the pharmaceutical industry: drug design and bioavailability improvement
Research activities in the pharmaceutical sector focus primarily on developing novel drug formulations which can elicit the desired response upon being administered to the patient...
Additive manufacturing of heat exchangers
In the refrigeration industry, additive manufacturing (colloquially referred to as “3D printing”) makes it possible to fabricate novel, complex and potentially more energy efficient...
Cold storage conditions for fruits and vegetables
Practical recommendations for the cold storage of over 200 cultivars of fruits, vegetables and herbs (storage temperatures, relative humidity, storage time, controlled atmosphere...
For IIR members only
Global cold storage capacity
This table presents the cold storage capacity in about 50 countries, based on data from the Global Cold Chain Alliance (GCCA).
Environmental impact of the ice cream industry
This summary document describes the environmental impact of ice cream manufacturing, which is mainly due to the energy consumption and refrigerants used.
Ice cream manufacturing, environmental impact and market data
From a physico-chemical point of view, ice cream is a complex, frozen multiphase mixture. The manufacturing process includes several stages of freezing which are described in this...
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...
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...
Global HFC emissions from the refrigeration sector
This table shows HFC emissions from the refrigeration sector – including air conditioning – in million tonnes of CO2 equivalent for about 40 countries that are signatories...
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...
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...
Thermophysical properties of HFC refrigerants
Thermophysical properties of over 100 HFC refrigerants, including single-component and blends.
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...
Heat pump stock in Europe
This table presents the stock of installed heat pumps, the CO2 emissions avoided and the number of jobs in the heat pump sector in Europe.
Events
6 results
IIR event
11th IIR Conference on Solid-State Cooling, Heating and Energy Harvesting
June 07, 2026 - June 11, 2026
Ljubljana, Slovenia
Submit your abstract now! The 11th IIR Conference on Solid-State Cooling, Heating and Energy Harvesting (Thermag 2026), to be...
Find out more
17th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL 2026)
August 23, 2026 - August 26, 2026
Hamilton, New Zealand
Submit your abstract! With the increasing need for global warming countermeasures, natural working fluids have become a clear vector to reducing the CO2 footprint of...
15th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning
September 16, 2026 - September 18, 2026
Xi'an, China
Call for abstracts is open! The 15th IIR Conference on Phase-Change Materials and Slurries for Refrigeration...
Other event
15th IEA Heat Pump Conference
May 26, 2026 - May 29, 2026
Vienna, Austria
Join the 15th IEA Heat Pump Conference, which will take place in Vienna, Austria,from May 26-29, 2026! The 15th IEA Heat Pump Conference, co-sponsored by IIR,...
21st International Conference & Exhibition on Liquefied Natural Gas (LNG2026)
February 02, 2026 - February 05, 2026
Doha, Qatar
Register...
Webinar – Refrigerated Transport in Hot Climates: Challenges and Innovations
December 09, 2025
France
Objective: To share key insights from the UNEP/IIR Cold Chain Technology Brief: Road Refrigerated Transport in Hot Climates, foster dialogue between experts, industry, and policymakers, and promote sustainable...
