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IIR document
Shell side direct expansion evaporation of ammonia on a 3-D structured surface tube bundle with exit superheat effect.
Évaporation de l’ammoniac par détente directe côté calandre sur un faisceau de tubes à surface structurée en 3-D avec effet de surchauffe en sortie.
Engineer’s notebook: the fundamentals of expansion tanks.
Frequency distribution control for flow-induced noise mitigation near expansion device.
Theoretical and experimental analysis of expansion devices for meso-scale cooling systems.
Simulation analysis of a two-rolling piston expander replacing a throttling valve in a refrigeration and heat pump system.
Experimental analysis of HFC-134a expansion through small-bore adiabatic capillary tubes.
3D CFD modelling of twin screw expanders using real gas equation of state and REFRPROP.
Thermal performance of ground source heat pumps that use direct expansion system.
A micromachined Joule-Thomson cryogenic cooler with parallel two-stage expansion.
Effect of subcooling using expander-compressor unit in transcritical CO2.
A hierarchical gray-box dynamic modeling methodology for direct-expansion cooling systems to support control stability analysis.
On the strategies towards isothermal gas compression and expansion.
Dynamic model of a transcritical CO2 ejector expansion refrigeration system.
Experimental study of different expansion devices in domestic refrigerator with spiral tube heat exchanger.
Performance analysis of the ejector-expansion refrigeration cycle using zeotropic mixtures.
Refrigeration sector monitoring
58 results
World's smallest electronic expansion valve
Danfoss recently presented a small electronic expansion valve, especially used for air conditioners with variable refrigerant flow.
CO2 heat pump with variable-displacement compressor/expander in the pipeline
This CO2 heat pump will use oil-free variable-load compressor and variable expander technology, currently tested at Purdue University’s Herrick Laboratories.
Spacewalkers replace the cooling pumps of the ISS cosmic particle detector
Two astronauts just finished successfully repairing the cooling pumps of the Alpha Magnetic Spectrometer fitted to the International Space Station.
Scientists develop a chip to detect Legionelia very quickly
Researchers at the Technical University of Munich claim to have developed a test for quick detection of Legionella bacteria.
France: the government recently published several documents on HFC regulations (in French)
On November 22, 2017, the French Ministry of Ecological and Solidarity-based Transition (Ministère de la Transition énergétique et solidaire) published two documents which summarise the different regulations on HFCs at different levels...
China: expanding electronic expansion valve market
Electronic expansion valves are mainly used in inverter air conditioners to automatically adjust refrigerant flow to achieve better energy-saving performance. This technology is one of the 30 key energy-saving technologies promoted by the Chinese...
A low charge direct expansion evaporator system configured to use less ammonia
A US-based meat processor operates a cold storage facility that uses just 1 kg approx ammonia per kW.
Ultra-low temperature systems ready for COVID-19 vaccine storage
Mirai Intex, corporate member of the IIR, is positioning its ultra-low-temperature (ULT) systems to serve as the refrigeration technology for the storage of COVID-19 vaccines and the freeze-drying of the...
MIRAI Intex, new corporate member of the IIR!
Presentation of MIRAI Intex and its flagship product: MIRAI COLD 15.
The CRAC (Computer Room Air Conditioning) market within the EMEA zone
The CRAC market accounts for 30,000 sold units in 2014, i.e as many as in 2013 within the EMEA zone. Like in 2013, 80% of the market is dominated by Europe.
Single-fuel LNG ferries with waste heat recovery systems
A Dutch ferry operator has recently commissioned two new ships with single-fuel LNG engines. The ships are also equipped with a waste heat recovery system to generate electricity.
IIR 2023 conference in Ohrid: focus on CO2 heat pumps
As demonstrated at the last IIR conference in Ohrid , heat pumps are a potential development area for the use of CO2, in particular for the thermal management of electric vehicles.
ICR2019: overview of current refrigeration research topics (part III)
Energy storage, desiccant air conditioning, high-temperature heat pumps and ejector technologies were some of the salient topics of the latest IIR Congress. Continuation of the synthesis of key presentations of ICR2019.
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...
Air-conditioning and heat-pump market figures in France; January-April 2014.
From January to April 2014, air-to-air heat pumps showed signs of very slight growth (2 to 4 %) whereas air-to-water heat pump sales grew by 23 %.
IIR news
14 results
Member news : Danfoss launches thermostatic expansion valve for CO2
Danfoss has recently launched a thermostatic expansion valve for CO2, based on its TE2 valve. It is suitable for small to medium size remote refrigeration systems such as cold rooms and display...
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.
IIR member news: AFCE
The AFCE published an explanatory document of the F-Gas Regulation.
Member news: latest innovations from Mirai Intex
The company Mirai Intex has just marketed a refrigeration machine using air cycle for low temperatures. Mirai Intex also markets a mobile storage solution.
Three educational and awareness-raising events within the framework of INDEE+ project in 2021
For the INDEE+ project, the end of the year 2021 was marked by several educational events aiming to raise awareness of the application of clean cooling systems offered by the CO2/R744 refrigeration...
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.
Compressors Conference 2023 in London: Register today!
The 13th International Conference on Compressors and their Systems will be held this September in London.
Send in your abstracts to the 13th International Conference on Compressors and their Systems
Organised by City, University of London, this 3-day conference will provide a forum for developments in air, gas and refrigeration compressors, vacuum pumps and expanders. The call for abstracts ends December...
IIR member news: Cemafroid, IRSTEA and AFCE
A new study on the containment of refrigerants has been launched with the aim of identifying and promoting best practices in this regard.
Member news: Latest news from Danfoss
Danfoss is improving its range of electric expansion valves and has started construction of an energy-efficient supermarket.
Philippe Lebrun received the Mendelssohn Award.
Philippe Lebrun, President of the IIR’s General Conference, received the prestigious Mendelssohn Award conferred by the International Cryogenic Engineering Committee on March 11, 2016.
Registration is now open! 12th International Conference on Compressors and their Systems
Book your seat at the well-established 12th International Conference on Compressors and their Systems to take place on September 6-8, 2021.
Early Bird Registration now open for the Compressors Conference 2023 in London
Early Bird Registration ends August 6! This multi-day conference organised by the Centre for Compressors Technology at City, University of London, provides a forum for developments in air, gas and refrigeration...
IIR website: consult our courses!
The “Services and expertises” section of the IIR website includes a section on courses and training. The courses are among the most downloaded documents in 2022!
Encyclopedia of Refrigeration
2 results
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...
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...