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Simulation analysis of a two-rolling piston expander replacing a throttling valve in a refrigeration and heat pump system.
A fresh look at vortex tubes used as expansion device in vapor compression systems.
Theoretical and experimental analysis of expansion devices for meso-scale cooling systems.
IIR document
Analysis of a combined absorption cycle for power and cooling production using a novel oil-free co-rotating scroll expander.
Design and setup of the micro turboexpander transcritical CO2 system.
Thermal performance of ground source heat pumps that use direct expansion system.
A hierarchical gray-box dynamic modeling methodology for direct-expansion cooling systems to support control stability analysis.
A gray-box dynamic modeling method for variable speed direct-expansion systems.
Experimental study on the separator in ejector-expansion refrigeration system.
A modeling study on the operational stability of a variable speed direct expansion air conditioning system.
An experimental comparison between performances of modular silicon expansion valve and thermal expansion valve in mobile ac system.
Ejector expansion refrigeration system: ejector design and performance evaluation.
A robust gray-box modeling methodology for variable-speed direct-expansion systems with limited training data.
Comprehensive experimental performance analyses of an ejector expansion transcritical CO2 system.
A simulation study on the operational stability of an EEV-controlled direct expansion air conditioning system under variable speed operation.
Refrigeration sector monitoring
36 results
World's smallest electronic expansion valve
Danfoss recently presented a small electronic expansion valve, especially used for air conditioners with variable refrigerant flow.
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...
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.
MIRAI Intex, new corporate member of the IIR!
Presentation of MIRAI Intex and its flagship product: MIRAI COLD 15.
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...
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.
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...
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.
Automotive air conditioning: which refrigerant for electric cars?
Different alternatives exist today to replace R134a in automotive air conditioning systems. Update on possible solutions for electric cars.
Vapour compression refrigeration for space applications
An IJR review paper presents the history of vapour-compression refrigeration systems used in microgravity environments and sets the next steps of research needed to achieve reliable...
IIR member news: Star Refrigeration chooses CO2 to cool down a beer warehouse
Star Refrigeration, collective member of the IIR, recently published a case study about a CO2 solution used to cool down a beer warehouse.
Magnetic refrigeration, a promising technology for the liquefaction of hydrogen
A keynote at the recent IIR Congress highlights magnetic refrigeration as a technology with high potential for the liquefaction of hydrogen, an essential energy vector for decarbonisation.
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...
Heat pump sales grew in Europe in 2020
According to the latest market report by European Heat Pump Association (EHPA), heat pump sales grew by +7.4% in 2020, offering benefits both in terms of greenhouse gas emission...
IIR news
9 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.
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 : 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...
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...
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.
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...