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IIR document
Development of an accumulator liquid-level estimator to enable zero-superheat control and active charge management in vapor-compression systems.
Experimental investigation on oil supply system inside a rotary compressor.
Levels of microbial contamination of domestic refrigerators in Italy.
Development of a stepped capillary tube as a low cost throttling device for a residential heat pump system.
Seal mechanism of tip seal in scroll compressor.
2016 global cold storage capacity report.
International energy efficiency in buildings standards.
Performance optimization of a transcritical CO2 refrigeration system using a controlled ejector
Recommended by the IIR / IIR document
Nationally determined contributions: how refrigeration should be included.
2014 IARW global cold storage capacity report.
Dynamic behavior study of multi-section vertical absorption heat exchanger.
A multi-level MPC simulation study in a school building.
Cooling systems for the temperature level T= 28…30 K.
Reducing the noise from the cavity by tuning the compressor’s oil level.
Evaporative coolers of gases and liquids with a lowered level of cooling.
Refrigeration sector monitoring
156 results
Maturity level of alternative AC technologies
In a recent review article, the authors assessed air conditioning technologies in Europe according to their Technology Readiness Level (TRL).
Spain: action plans for heating and cooling at local level
In June 2024, la Fundación Renovables issued a guide to promote sustainable cooling in Spanish cities with more than 45,000 inhabitants. Solutions include installing heat pumps,...
Actions at European level to combat the illegal trade of HFCs
Various actions to tackle illegal imports of HFCs in the European Union are progressively being implemented: raising awareness of policy makers, good practice guidelines and a “single window” at the disposal of customs in particular.
Energy savings in a milk plant through permanent magnet speed motors (en français)
A Belgian milk plant reduces by 18 to 21% the necessary energy for cooling through permanent magnet speed motors. (en français)
Data centres: poor levels of cooling utilisation in UK
According to a recent survey, current average cooling utilisation level is just 34% in UK data centres.
New standards for “intelligent” ACs implemented in China
China implements new standard to officially define and set technological requirements for intelligent ACs. Additionally, a Chinese air-conditioning manufacturer is the first company in China to achieve a global...
Is this the final run in the quest for the Higgs Boson?
In March 2012, physicists from Fermilab’s Tevatron collider near Chicago announced that data collected could suggest the existence of the Higgs boson. Furthermore, the results coincide with the Large Hadron Collider (LHC) results released by CERN...
HFC emissions in the EU cut by 20% between 2015 and 2021
The latest figures published by the EEA illustrate the impact of the F-gas Regulation on HFC emissions in the EU
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...
A novel method for frost detection
Frost growth on the evaporator coils of a refrigeration plant can dramatically reduce its efficiency. A novel indirect detection method that would avoid frost built-up has been developed.
Global air conditioning market: figures and trends
The stagnation of the market in 2022 masks strong contrasts depending on the region. The transition to R32 and the multiplication of measures promoting energy efficiency are strong trends.
Key figures of the refrigeration sector in South Africa
The stock of household refrigerators is expected to double by 2040 and AC sales should increase with economic growth, according to South Africa's National Cooling Plan.
Overview of data center cooling technologies
The very huge growth in Internet traffic requires the continued development of new energy-efficient data center cooling technologies, based primarily on liquid...
Walk with someone else's tendons thanks to cryogenics
A technique of cryopreservation of grafts developed in France in the context of ligament transplantation, allows grafts to be preserved for up to 10 years and to limit the risk of rejection.
Latest news about regulation in Europe
The European “F-gas” Regulation and the EN 378 standard are currently being revised at European level. Latest news on these two flagship texts.
IIR news
121 results
Call to action to adopt 5 internationally established refrigeration terms!
All professionals in the field of low-temperature technologies are called and are strongly encouraged to strictly adhere to the internationally established and approved definitions, by the International...
The IIR launches a call to action to adopt 5 internationally established refrigeration terms!
Pôle Cristal Symposium: Les Rendez-Vous Du Pole Cristal 2019
The twelfth edition of the symposium "les rendez-vous du Pôle Cristal" was held in Dinan on Thursday, October 3, 2019.
IIR Informatory Notes on refrigerants designed to meet the needs of decision-makers
"We felt it was important to draft a collection of Notes on the most appropriate actions to take in this field, designed to meet the needs of decision-makers in order to be better prepared for the upcoming deadlines."
The IIR at the refrigeration forefront of EU projects
Generally involved in the dissemination process, the IIR makes use of its network, activities and services to promote worldwide the research outcomes of the EU projects.
New IIR Informatory Note: “Whole Body Cryotherapy/Cryostimulation”
Learn about the latest advances and the challenges related to these rapidly developing techniques.
Continued IIR commitment to reduce refrigerant emissions
This week at UNESCO headquarter in Paris, the IIR is attending the Joint 10th Meeting of the Conference of the Parties to the Vienna Convention and the 26th Meeting of the Parties to the Montreal Protocol.
New IIR Informatory Note on the carbon footprint of the cold chain
The IIR has just issued a new Informatory Note on the carbon footprint of the cold chain. It highlights the food safety and environmental benefits of an improved global cold chain.
Highlights from COP13/MOP36 – Day 4
Today, at COP13/MOP36 in Bangkok, high-level discussions continued as delegates, scientists, and policy leaders gathered with renewed urgency to protect the ozone layer and address climate...
Press release: The IIR Launches Quiz on The Impact of Refrigeration on the Climate Change
In conjunction with the newly released 35th IIR Informatory Note on The Impact of the Refrigeration Sector on Climate Change, the International Institute of Refrigeration (IIR) has launched a quiz on “Refrigeration and the environment”, which...
Statement given by Didier Coulomb, Director General of the IIR, during MOP 28
Statement Given by the Director General of the International Institute of Refrigeration (IIR) during the 28th Meeting of the Parties to the Montreal Protocol (MOP-28) in Kigali...
COP23 and MOP29 highlight the impact of refrigeration on the environment
As an independent intergovernmental organisation, the International Institute of Refrigeration (IIR) is actively involved in international events related to the climate.
IIR website: most downloaded publications in 2023
Discover the three most popular IIR publications of 2023. The focus is on the carbon footprint of the cold chain and cold rooms!
The IIR supports the Global Cooling Pledge
The IIR and several of its corporate members support this historic commitment signed during COP28.
Encyclopedia of Refrigeration
7 results
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...
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...
For IIR members only
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.
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...
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...
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...
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...
