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Speed-controlled compact screw compressors with optimized part-load efficiency.
IIR document
Experimental and numerical analysis of R744 ejectors operated in part load.
Part-load characteristics of a new ammonia/lithium nitrate absorption chiller.
Experimental investigation of part-load performance of enhanced CO2 refrigeration systems.
Recommended by the IIR
Part load performance of single and two stage compressors – a comparative experimental study in a R410A chiller unit.
Experiments on part load performance of ground source variable refrigerant flow system in winter.
[In Chinese. / En chinois.]
Developing an integrated part load value for chillers of office buildings in Hong Kong.
Partial load performance analysis of a single effect absorption chiller.
Development and validation of a mechanistic vapor-compression cycle model.
Inherent capacity modulation of a linear refrigeration compressor.
Load-based testing of heating and cooling equipment informed by detailed energy models.
Research of thermal dynamic characteristics for variable load single screw refrigeration compressor with different capacity control mechanism.
Experimental measurement of cyclic degradation performance of air conditioners through a building load simulation in a test chamber environment.
A novel technique for computationally efficient consideration of cross-fin conduction in fin-and-tube heat exchanger models.
On the control of desiccant wheels in low temperature drying processes.
Refrigeration sector monitoring
163 results
Mini containers, an energy-efficient solution for small farmers?
To benefit small growers, a team of researchers investigated the concept of mini containers that would consume less energy and produce fewer GHG emissions than conventional full-size...
Magnetic-bearing centrifugal compressors
This new compressor technology - presented at the 2003 AHR Expo in Chicago - may have a significant effect on the future of mid-range chillers and rooftop applications in water-cooled, evaporatively cooled and air-cooled chilled-water and...
Eco-friendly cooling for Tokyo’s Haneda Airport
The new international terminal of Haneda Airport opened in October 2010. It uses a combination of geothermal energy, solar power and cogeneration systems to reduce energy consumption and is also the first airport to use sodium sulphur (NaS)...
Chillers: efficiency takes off
Chillers are key refrigerating systems since, according to the Department of Energy, in the US, they account for about 13% of the power consumed by the nation's buildings and 9% of the overall demand for electric power. Examples below illustrate...
Trends and Figures: Chiller market grows and diversifies
According to reports published during the 2008 AHR Expo held on January 22-24, 2008 in New York, the chiller market in 2006 was USD 2 billion in Asia-Pacific, USD 1.5 billion in Europe and USD 1 billion in the US. The growth (as compared to 2005)...
Marine refrigeration
The use of natural refrigerants is gradually spreading. Here are two examples of their use in the marine sector: - Environmentally-friendly fish transport American Freedom is one of the world's largest refrigerated ships and can hold up to...
The benefits of thermal energy storage for cold chain applications
Several presentations at the IIR ICCC 2022 conference focused on the potential applications of Thermal Energy Storage (TES) and Phase-Change Materials (PCMs) and highlighted the...
GL2012 highlights: Performance analysis of ice rinks to cut down energy use
A comparison between two Swedish ice rinks shows a roughly 33% difference in terms of energy consumption
Global air-to-water heat-pump market figures
In 2010, global air-to-water (ATW) heat-pump market demand increased by 24% since the previous year.
Cool ways to chill for cold storage and maintaining an unbroken cold chain
In an interview for FOOD Magazine, Robbie Davies (Cold Chain Centre) clarifies significant progress relating to the cold chain. Refrigeration technology is an area that has advanced considerably in recent years - particularly in road transport,...
Ice storage
The Paris Palais des Congrès, a vast building comprising a Congress centre, a hotel and a shopping mall is equipped with an ice storage system allowing it to optimize its power-bill management in winter, but also to shave summer peaks and to...
Data centres: the challenges of energy-efficient chip cooling
Innovative liquid cooling solutions are under development to further reduce energy consumption in the ever-growing number of data centres.
Liquid desiccant AC system cuts ice rink energy bill
Thanks to a liquid-desiccant air-conditioning system and the use of renewable energy sources, Pines Ice Arena in Pembroke, Florida, claims to have achieved 55% electricity savings, as well as a 35% reduction in natural gas consumption and a...
New R32 air-conditioning unit for Europe
Daikin announces Europe to see first air conditioning heat pump using the "slightly flammable" R32 refrigerant ...
H-fluid as an alternative to HFC-134a?
The new European Directive 2006/40 on emissions from air-conditioning systems in motor vehicles - which bans F-gases with a GWP higher than 150 (such as HFC-134a) as of 2011 for new models of cars - and Californian legislation which is putting...
IIR news
114 results
Walk-in cold rooms: webinar replay and slides now available
Thank you for taking part in our second webinar! You can now download the slides and watch the replay on the IIR YouTube channel. Furthermore, the overview guide is also available in...
International events: Amsterdam
The 12th European Cold Chain Education Program took place in Amsterdam on January 26-27, 2009 and attracted over 160 participants from 24 countries. Thirty-one presentations covered a wide range of logistics issues including ways of adapting to...
EU project SuperSmart comes to a close: What have we learnt?
Funded by the European Union Horizon 2020 Research and Innovation Programme, the EU SuperSmart project was launched in February 2016 and recently came to an end. Want to know how to reduce energy consumption in the food retail sector?… SuperSmart...
IIR member news: Carrier Transicold
Quest II: container refrigeration with 65% less CO2 emission.
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.
Technical visit to the Tokyo fish market
At the ICCC conference last June, attendees had the opportunity to participate in technical visits, including a tour of the Tokyo fish market. Alain Le Bail, President of IIR Commission C2, joined the visit and...
Editorial by Didier Coulomb
A new year is beginning. Perhaps it will be a difficult year because the economic crisis is far from over. A lot of challenges and maybe opportunities lie ahead, because the refrigeration and air-conditioning sector, which needs to address...
The International Journal of Refrigeration (IJR)
The IJR is the most important scientific journal in the field of refrigeration technology. It is a co-publication of Elsevier and the IIR. Eight issues are published each year, with over 15 articles per issue. Certain issues are totally or...
News from IIR members: Star Refrigeration
Star Refrigeration has installed a highly efficient Azanechiller at a Scottish meat processing facility. The central pumped glycol system has a total cooling capacity of 365kW and includes pumps with variable speed drives, six ceiling...
The Centenary in Paris and future events
A joint IIR/French Refrigeration Association (AFF) conference was held in Paris on June 12, 2008 in order to celebrate the centenaries of both organizations. It was combined with the IIR statutory meetings on June 10, 11 and 13 and with various...
Discover the IIR Conference papers from 2021
Thanks to the support of its international network, last year, the IIR organised a staggering seven conferences dedicated to key themes of refrigeration.
Heat pumps, the central theme of the recent IIR Congress
An overview of the research carried out in the field of heat pumps, with the aim of achieving greater flexibility and increased energy efficiency, in particular through to the use of thermal energy...
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...
Two new IIR Informatory Notes on Energy Recovery!
The 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 Recovery Equipment.
Past events: September and October 2021
Focus on the latest events involving the IIR.
Encyclopedia of Refrigeration
9 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...
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...
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...
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...
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.
Events
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21st International Conference & Exhibition on Liquefied Natural Gas (LNG2026)
February 02, 2026 - February 05, 2026
Doha, Qatar
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