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IIR document
Dynamic characteristics improvement of the single screw compressor with odd-grooves screw rotor.
Study on screw rotor thermal machining method of single screw compressor.
Modelling of multiphase twin screw machines.
Geometrical aspects of novel internally geared screw machine.
Recommended by the IIR / IIR document
Noise control of a twin-screw refrigeration compressor.
Thermodynamic modeling of screw expander in a trilateral flash cycle.
Basic design procedure for an internally geared screw compressor.
CFD analysis of oil flooded twin screw compressors.
Parallel operation of screw compressor packs.
CFD simulation of a twin screw expander including leakage flows.
Effect of working medium on single screw refrigeration compressor performance.
Experimental investigation of screw compressor clearance monitoring techniques.
CFD approaches applied to a single-screw expander.
Investigation of screw compressors for low pressure ratio applications.
Application of path homotopy in twin screw compressor rotor profile design.
Refrigeration sector monitoring
80 results
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...
New NIST screening method for refrigerants
Researchers from the US National Institute of Standards and Technology (NIST) developed a computational method to identify candidate low-GWP refrigerant fluids. The method identified 1234 promising low-GWP chemicals among 56 203 considered.
Ohrid conference highlights: ammonia refrigeration in China
Over 92% of Chinese cold stores have adopted ammonia as a refrigerant. Over 92% of Chinese cold stores have adopted ammonia as a refrigerant. According to Jianji Zhang, series reciprocating compressors are currently the most widely used due to...
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)...
Scroll compressors offer top efficiency
Scroll compressors offer top efficiency The Taiwan-based compressor manufacturer ChynTec International Co. Ltd. published an article earlier this year offering a synthetic comparison of the general performance of reciprocating, scroll and screw...
The global refrigeration compressor market
Bien que pénalisé par la pandémie de Covid-19 qui a fortement impacté le secteur du conditionnement d’air, le marché des compresseurs a progressé dans certains domaines tels que la chaîne du froid, l’industrie...
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...
Compressors: key trends
Over the past few years, the design and performance of rotary, reciprocating positive displacement and dynamic compressors have been greatly improved. CO2 compressors have conquered new niches and twin-screw compressors are now increasingly used...
Markets: Chillers
According to a recent market report by BSRIA, an estimated 200 400 units of chillers were shipped worldwide in 2004. The estimated number of centrifugal chillers was 8500 with the USA at the centre of production (3500 units equal to 41% of the...
A strong global compressor market
The almost 12% growth in the refrigeration compressor market over the 2020-2023 period reflects the vitality of the refrigeration sector. Centrifugal compressors and semi-hermetic reciprocating compressors...
World AC and compressor trends
In its recent report, JARN estimates that the HVAC&R market in 2006 was about 66 billion USD and about half of sales were air conditioners and related products. - Regarding the AC market, China, the US, Japan and major European countries make...
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...
Briefs: Largest distribution centre in Africa
The centre, built by Woolworths in Midrand, South Africa has a surface area of 72 000 m². The 2-stage refrigeration system uses 4.2 tons of ammonia. It operates at -9°C/+32°C on the low stage while the high-stage ammonia circuit is used to chill...
Briefs: Grenco Marine
Grenco Marine has developed the first ammonia/carbon dioxide cascade systems to be used on board fishing vessels. Experience with the Dirk-Dirk (a trawler with a capacity of 235 tons of fish/day) led to the development of a new defrosting process:...
Briefs: Magnetic-levitation bearing system
The world's first large tonnage magnetic-levitation bearing air-cooled chiller for air conditioning is being installed in the American Embassy in Tokyo. The 2520-kW chiller plant consists of 12 MagLev Chiller modules. OBO, which installed it,...
IIR news
13 results
News from IIR members: MYCOM Mayekawa
The Japanese compressor manufacturer MYCOM Mayekawa will be introducing its high-efficiency NH3/CO2 cooling system NewTon3000 within the context of the Garden City Ammonia Program (GCAP). GCAP is actively promoting CO2 emissions reduction and...
News from IIR members: Nestlé
Nestlé's confectionery production facility in Halifax, UK, has implemented an award-winning innovative ammonia heat pump plant to power its operations, cutting costs at the site by over 240 000 € per year. The system, formed by a collaborative...
New JSRAE book on refrigeration compressors
The IIR partner JSRAE just published a comprehensive book, “Compressors for Air Conditioning and Refrigeration”.
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.
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...
IIR member news: A new BSRIA study on the global compressor market
A recent study by BSRIA shows that sales of refrigeration compressors in 2022 are expected to reach 502 million units with a value of USD 48.6 billion, up 15% year-on-year.
HARFKO 2015: More successful than ever welcomes UNEP Ozone2Climate Roundtable & Roadshow
Last week the IIR was delighted to participate in the 13th Heating, Air-conditioning, Refrigeration & Fluid Exhibition – KOREA (HARFKO 2015).
Upcoming conference: ICR2007
A call for papers has been launched: abstracts are to be submitted by August 31, 2006. The Science and Technology Committee will screen them, and authors will be informed of acceptance by November 30, 2006. The deadline for submission of full...
Member news: Mirai Intex releases new high capacity ultra-low temperature refrigeration system
Mirai Intex, corporate member of the IIR, has released a new ultra-low temperature (ULT) system based on air-cycle technology, offering high cooling capacity.
Don’t miss your chance to support the IIR Congress 2023!
To ensure the visibility of your entity across the industry on an international level, sponsoring the 26th IIR International Congress of Refrigeration is a must!
MOP37 Highlights
The 37th meeting of the Conference of the Parties to the Montreal Protocol (MOP37) were held in Nairobi, Kenya from 1 November to 7 November 2025.
The long awaited ICR2015 is underway!
Held every four years, this year ICR2015 welcomes 1,011 conference delegates from 55 countries, making it a truly global refrigeration event.
IIR Member news: Star Refrigeration installs ammonia chillers in an indoor skiing facility
After 90 years of existence, indoor skiing now uses modern and energy efficient technologies. Star Refrigeration participates in this evolution with its ammonia chillers.
Encyclopedia of Refrigeration
1 result
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...
Events
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,...
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