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IIR document
The enhancement of the critical temperature in thin aluminium films.
Experimental studies on a novel thin flat heat pipe heat spreader.
Low-temperature emissivity of thin AL2O3 layers deposited on copper substrate.
Ultra-fast vitrification experiment of hamster ovary cells utilizing thin film evaporation.
Investigation of refrigerant dissolution into thin oil film during compression process.
Parametric study of ice thermal storage system with thin layer ring by Taguchi method.
El envasado ultralimpio y la descontaminación con nanoemulsión de orégano alarga la vida útil de la carne picada almacenada a 4°C.
Ultraclean packaging and surface decontamination with oregano essential oil nanoemulsion increases the shelf-life of minced meat stored at 4°C.
Formation of adsorbent thin layer on aluminum sheet by using a silane coupling agent for vapor adsorption refrigeration system.
Enzymatic hydrolysis of cod heads – effect of freezing and thawing on the quality and composition of protein hydrolysates.
Impact of novel thawing methods on the quality characteristics of beef meat.
Wild caught cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) chilled in slurry or flake ice and its effect on product quality.
Caractérisation expérimentale et modélisation multi-échelles des transferts thermiques et d'eau lors de la congélation des produits alimentaires.
Experimental characterization and multi-scale modeling of heat and water transfers during food freezing.
Development of a cabin for fast freezing in a household refrigerator and examination of its effects on the quality characteristics of beef.
COMPARATIVE TESTING OF A THIN-WALL VEHICLE.
ATP TESTS OF THIN-WALLED VEHICLES.
Refrigeration sector monitoring
92 results
Regulations Reminder
The EC Directorate General of Fair Trading, Consumer Affairs and Fraud Control (DGCCRF) has put out information on Decree No. 2005-944 of August 2, 2005. The latter modifies Decree No. 64-949 of September 9, 1964 in order to bring it into line...
Performance comparison of R1234yf and R134a
A study published in Applied Thermal Engineering compares the performance of HFC-134a and HFO-1234yf as drop-in alternative in automotive air conditioning systems.
Impact of failures on the performance of refrigeration systems
An Australian study assesses the impact of failures of different refrigeration systems on their performance. Various air conditioning systems, refrigerated display cabinets and walk-in cold rooms were put to the...
New heat pump life cycle performance assessment tool
The Air-conditioning, Heating and Refrigeration Technology Institute (AHRTI) developed a tool to calculate Life Cycle Climate Performance (LCCP), using Microsoft Excel.
Not-in-kind cooling technologies performance comparison
This study proposes a quantitative comparison of refrigerants and system performance of not-in-kind cooling technologies.
Closer industry-science ties could boost heat pump performance and cut costs
An article co-authored by IIR Science and Technology Council (STC) member Christian Vering discusses how improved testing methods and closer collaboration between manufacturers and researchers could enhance heat...
Purdue highlights: R410A “drop-ins”performance
According to a paper presented at Purdue in July 2016, two new “drop-in” alternatives to R410A are said to have exhibited very similar performance in experimental tests. This paper will be available in Fridoc in te near future.
Global air conditioner market: 2024 performance
Check out the key figures for the global air conditioner market in 2024, with a focus on regional trends.
R452A performance and environmental impact in refrigerated transport
A paper presented at the IIR ICCC conference in China provides a review of R452A properties, system performance and LCCP impact as an alternative refrigerant in refrigerated transport.
Improving the energy performance of cold stores
During ICCC2013, J. Evans presented results of surveys and audits which aimed at collecting data on the energy use in various types of cold stores.
Heat exchanger design can improve the performance of PCMs
According to a recent review article, optimising the design of heat exchangers in latent heat thermal energy storage systems (LHTES) is one way of improving the thermal conductivity of phase change materials...
Household refrigerators: HFO performance as drop-in replacement for R-134a
During the IIR co-sponsored International Refrigeration and Air-conditioning Conference at Purdue in 2012, K.M Karber et al. from Oak Ridge National Laboratory, United States, presented* the results of a performance test on R1234yf and R1234ze,...
IJR highlights: impacts of refrigerant charge on system performance
A team from Purdue University recently published* in the International Journal of Refrigeration a study showing the impact of charge level on capacity and efficiency for several heat-pump and air-conditioning units tested at various refrigerant...
A new non-flammable mixture to boost the performance of CO2 systems
In a recent IJR article, researchers propose combining R744 with Dimethyl-ether (DME) to boost system performance while ensuring safety and low environmental impact, in a recent IJR...
Promising performances for a PCM used in refrigerated transport
British and Chinese scientists collaborated to develop a refrigerated container which can keep the inside temperature between 5 and 12°C for up to 120 hours.
IIR news
15 results
IIR Working Group publishes Guidelines for Life Cycle Climate Performance
The Guidelines for Life Cycle Climate Performance (LCCP) provide a harmonised method to calculate the LCCP for all types of stationary air conditioning, heat pumping and refrigeration systems.
Junior Member co-chairs new IIR Working Group on Life Cycle Climate Performance Guideline
In February 2026, the IIR’s Science and Technology Council approved a new working group dedicated to updating IIR’s Life Cycle Climate Performance Guideline. IIR Junior Member Christian Vering will serve as...
Discover the 32nd IIR Informatory Note on the “Harmonization of Life Cycle Climate Performance Methodology”
This Informatory Note summarises the LCCP guidelines prepared by the Working Group. It provides recommended assumptions and data sources for different types of units, presents the various existing LCCP tools and outlines usages and limitations of...
Clim'Eco: the IIR is a partner of this new program, which began this year in Réunion.
This program aims to promote a reasonable use and good maintenance of air conditioning in the French overseas departments.
Catch up on the IIR Working Group on LCCP evaluation in Chicago
IIR Working Group on Life Cycle Climate Performance (LCCP) evaluation continues to make impressive headway.
Book your spot! Training session on food refrigeration systems
From July 1 to 5 2024, Professor Don Cleland will be leading a training workshop in London entitled “Cost-Effective Refrigeration”.
Job opportunities: Sainsbury’s is looking for young graduate engineers.
Sainsbury’s is looking for young graduate engineers: £27,000 (32,500 €) starting salary, six monthly reviews and performance relative bonus.
New in our Encyclopedia: additive manufacturing for refrigeration equipment
Additive manufacturing makes it possible to optimise the geometry and performance of cooling components such as heat exchangers and regenerators for caloric...
Check out the latest news from FRISBEE!
In this issue two hot topics: the test carried out to increase refrigerator performance and field test monitoring of the food cold chain in European markets.
IIR member news: Johnson Controls YORK chiller optimised for R1233zd(E)
The YORK YZ magnetic bearing centrifugal chiller, produced by Johnson Controls, is said to be the first chiller fully optimized for ultimate performance with the low-global warming potential refrigerant R1233zd(E).
New IIR Informatory Note. Low-GWP Refrigerants: Status and Outlook
The latest IIR Informatory Note outlines the options available for low-GWP refrigerants and their respective performance. It provides a series of recommendations on refrigerant...
The IIR Publishes a Technical Brief on High-Temperature Heat Pumps: A Key Technology for Industrial Decarbonisation
The International Institute of Refrigeration releases a comprehensive technical brief examining the state of the art, applications, and performance of high-temperature heat pumps, a pivotal technology for reducing carbon emissions from...
Second meeting of the IIR Working Party on LCCP Evaluation in Gaithersburg
The second meeting of the IIR Working Party on Life Cycle Climate Performance (LCCP) Evaluation took place at NIST in Gaithersburg, MD, USA.. The minutes of the meeting and other documents can be consulted on the Web page of the working party. The...
IIR releases new technical brief on dehumidification technologies for air conditioning
Paris, France — July 2026 — The International Institute of Refrigeration (IIR) has published Dehumidification in Air Conditioning, the 62nd in its Technical Brief series on refrigeration technologies. The...
Encyclopedia of Refrigeration
6 results
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...
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...
Nanorefrigerants
Nanorefrigerants are created by adding nanoparticles in suspension to a base refrigerant. They have a thermal conductivity that is 15% to 104% higher than that of the corresponding...
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 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...
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...
Events
1 result
IIR event
The Dairy Sector Energy Transition in Practice: Technologies and Tools for Professionals
July 28, 2026
Date: 28 July 2026 Time: 10:30 AM CEST Format: Online Language: English Register for the workshop...
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