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Towards industrialization of a small capacity direct air-cooled LiBr-Water absorption chiller.
IIR document
Influence of break-in on the leakage through reed-type valves of low-capacity refrigeration compressors.
Transient simulation of small-capacity reciprocating compressors in on-off controlled refrigerators.
Recent progress in compact, low power cryocoolers.
A low power cryocooled autonomous ultra-stable oscillator.
Seasonal energy efficiency rating improvement of residential HVAC systems using a low power inverter with a PSC compressor.
Performance evaluation of low-GWP refrigerants in 1–100 ton scroll compressors.
Low capacity nitrogen liquefier.
Trade-offs between design complexity and performance impacts for transcritical R744 ejectors.
Evaluating alternative refrigerants for high ambient temperature environments.
High efficient integrated CO2 refrigeration systems with ejectors and pivoting compressor arrangements.
Effect of fluid flow inertia and backflow on the effective force and flow areas of reed-type valves.
Development of a light-commercial compressor load stand to measure compressor performance using low-GWP refrigerants.
Medium capacity low charge ammonia chiller and heat pump.
Experimental investigation on the low-GWP HFC/HFO blends R454A and R454C in a R404A refrigeration system.
Refrigeration sector monitoring
48 results
Novel energy-saving cryogenic equipment for walnut kernel peeling
In a recent study, a prototype cryogenic equipment was designed to peel walnut kernel more efficiently than by immersion in liquid nitrogen.
Cryogenics 2021 highlights: applications of liquid nitrogen
Cryopreservation of biological materials to favour biodiversity and cooling of superconducting cables to allow transmission of electrical energy with zero resistance are key applications of liquid...
A new tiny satellite cooling system
Lockheed Martin makes tiny satellite cooling system which is three times more powerful.
Rare earths for spatial measurements.
Researchers from ECA-INAC developed a small cryorefrigerator, replacing liquid helium by a more efficient rare-earths based material.
Carbon dioxide snow to clean spatial telescope
An interesting method to keep the Webb Space Telescope mirror, seven times larger than Hubble, spotless.
Liquid nitrogen for French cuisine
The system uses the natural pressure of nitrogen during evaporation according to a vertical discharge principle.
Rare earths for spatial measurements
Researchers from CEA-INAC developed a small cryorefrigerator, replacing liquid helium by a more efficient rare-earths based material.
Reducing the environmental impact of ultra-low temperature refrigeration systems
Ultra-low temperature (ULT) refrigeration systems often use very high-GWP HFCs. Yet, ULT systems are excluded from the scope of the regulations aimed at phasing-down HFCs. An IJR paper reviews the most promising...
ICR 2019: an overview of current refrigeration research (part I)
Presentation of the main scientific and technical topics covered in the papers of the 25th IIR International Congress of Refrigeration and summary of some of the 14 keynotes.
Two-phase ejectors: a high potential for energy savings
Two review papers recently published in the IJR highlight ejectors as a promising solution to dramatically improve the efficiency of vapour compression refrigeration systems and outline the challenges that...
Solar ejector refrigeration systems: benefits and latest developments
Two IJR articles present the latest advancements in this technology and in particular the advantages of variable geometry ejectors and low-GWP refrigerants in terms of performance.
IJR highlights: review of low-GWP alternative refrigerants
In a recent review article based on over 60 published studies and published in the International Journal of Refrigeration, Chinese researchers have compared nearly 40 alternative low-GWP refrigerants in terms of...
IIR GL2020 conference: Range of CO2 applications
Almost half of the presentations at the IIR Gustav Lorentzen conference in Kyoto focused on CO2, in commercial refrigeration systems but also in many other applications. Overview of these...
Record: heat pump less than 10 g of propane per kW
German researchers have developed a refrigeration circuit integrating a propane heat pump that achieves a heating power of 12.8 kW with only 124 g of refrigerant.
Current status and future trends of natural refrigerants in North and South America
Two papers presented at the IIR Gustav Lorentzen Conference perfectly illustrate the interest in natural refrigerants and the obstacles they face in the Americas.
IIR news
12 results
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.
Cryogenics 2023 : Call for abstracts extended to October 30!
There's still time to submit an abstract to the IIR Cryogenics 2023 conference to be held in Dresden (Germany) on April 24 to 28, 2023.
IIR member news : Linde
The CSG-4 snow generator allows to generate snow on demand or via programming and is claimed to offer a cost effective and safe alternative to dry ice pellets.
News from IIR members: Linde
Linde has launched CRYOLINE XF, a new cryogenic spiral freezer, which uses advanced cross-flow technology to reduce freezing time and improve cryogen efficiency, while reducing overall freezer size.
Call for abstracts now open: Cryogenics Conference 2021
The Programme Committee of the 16th IIR Conference on Cryogenics kindly invites authors to submit their abstracts by February 10, 2021!
Member news: Mirai Intex ultra-low temperature refrigeration system at the ACHEMA trade show in Germany
Mirai Intex, corporate member of the IIR, will present its MC 15 C/W/T closed-cycle refrigeration machine at the ACHEMA trade show in August 2022 in Germany.
Download the latest technical papers from the IIR Cryogenics Conference
Held on 8-11 April this year, the 15th IIR Cryogenics Conference welcomed over 120 guests from more than 22 countries.
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.
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...
Member news: Koura introduces new refrigerant for air conditioning
Refrigerant manufacturer Koura recently introduced R468C, a refrigerant that could replace R410A in air conditioning systems.
Join our second Webinar on Walk-In Cold Rooms on June 11!
Book your seat! Register to the second webinar in our '"Cool Insights" series highlighting the use of walk-in cold rooms for precooling and storage of fresh produce in the Global South.
IIR publishes a new Technical Brief: Domestic heat pumps using hydrocarbons - Current status and market overview in Europe
At a time when the energy transition is at the top of the global agenda, the IIR is publishing a new Technical Brief on domestic hydrocarbon heat pumps. This strategic document...
Encyclopedia of Refrigeration
5 results
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...
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...
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...
