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Performance of a vapour absorption refrigeration system operating with ionic liquid-ammonia combination with water as cosolvent.
IIR document
Developments in transport refrigeration systems using liquid nitrogen expansion and mechanical vapour compression.
Molecular simulation for liquid vapour equilibria of ethylene,R1132a, R1132(E) and R1123.
Effect of liquid/vapour maldistribution on the performance of plate heat exchanger evaporators.
Measurements of isothermal vapour–liquid equilibrium for the 2,3,3,3-tetrafluoroprop-1-ene?+?propane system at temperatures from 253.150 to 293.150?K.
Experimental measurements and modelling of vapour-liquid equilibrium of 2,3,3,3-tetrafluoropropene (R-1234yf) + 1,1,1,2,2-pentafluoropropane (R-245cb) system.
A new fundamental equation of state for R1123 and its applications to mixture models for mixtures with R32 and R1234yf.
Experimental study of two-phase separators for vapor compression systems in household appliances.
A short note on the application of the Cisternas-Lam vapor pressure model for liquid desiccant dehumidifier systems.
Assessment of vapor-liquid equilibrium models for ionic liquids based absorption systems.
Analysis of vapor pressure and VLE of HFOs, HCFOs, and their blends with cubic equations of state.
Refrigerant charge reduction in vapor compression refrigeration cycles via liquid-to-suction heat exchange.
A design approach for liquid separators applied to household refrigerators.
Refrigeration sector monitoring
38 results
Ionocaloric cooling: a new technology under development in the US
A cooling technique using liquid-to-solid phase change fcould be an alternative to vapour compression systems, according to researchers at the University of Berkeley.
Solar cooling: Low-cost solar vaccine refrigerator
About 2 million people around the world die each year of diseases preventable by widely used vaccines. In Africa and parts of Asia, over half of all vaccines that require refrigeration spoil before they can be administered. Millions of lives and...
Cryogenic applications: Major cryogenic storage project
Thames Cryogenics is setting up one of the most ambitious cryogenic storage projects in Europe. The UK Biobank, based in Stockport, Oxfordshire, aims to recruit around 500 000 people across the UK between the ages of 40 to 69 and to track their...
High efficiency, low carbon supermarket refrigeration
This paper was presented at the IIR Gustav Lorentzen Conference in Glasgow (Sep. 2004). A new but simple high efficiency refrigeration system design suitable for use in supermarkets has been developed based on standard components so that...
Liquid hydrogen as a transportation fuel
With ever-rising petrol prices and global warming issues, alternative fuels for transportation are high up on the priority list. Hydrogen is already used for this purpose in fuel cell vehicles, but liquid-hydrogen-automobile technology is...
Cool IT: a new use for CO2
Carbon dioxide offers a new optimum cooling medium for IT facilities. Electrically benign, and therefore non-hazardous to servers and cabling, it is seven times more efficient at cooling than water: CO2 permits reduced volume flows and smaller...
Cryogenic applications: cryogenic system to recover volatile organic compounds
In 2007, in France alone 12 000 tonnes of volatile organic compounds (VOCs) were released from service stations, i.e. 1% of all such emissions in France. VOCs from service stations are detrimental to health and the environment and increasingly...
The heart inspires a new cooling system
In August 2004, at the Micro Nano Breakthrough Conference in Portland, engineers from Oregon State University in the US, presented a new successful desorption system using branching microchannels. The system was inspired by the human blood pumping...
R&D
The US Department of Energy's National Renewable Energy Laboratory (NREL) has developed a new air-conditioning system combining membranes, evaporative coolers and desiccants into a single device with the objective to suit to all climates,...
Maturity level of alternative AC technologies
In a recent review article, the authors assessed air conditioning technologies in Europe according to their Technology Readiness Level (TRL).
Neutrons provide first images of refrigerant flow
Researchers at DOE’s Oak Ridge National Laboratory have captured undistorted snapshots of refrigerants flowing through small heat exchangers, helping to further elucidate characteristics of heat transfer.
Liquid nitrogen for French cuisine
The system uses the natural pressure of nitrogen during evaporation according to a vertical discharge principle.
Liquid nitrogen spray to clean spacesuits
Researchers from Washington State University developed a liquid nitrogen spray to remove moon dust from a space suit, potentially solving what is a significant challenge for future...
US research projects to cut AC energy consumption
The 15 projects selected by Advanced Research Projects Agency-Energy (ARPA-E) – within the Building Energy Efficiency Through Innovative Thermodevices (BEETIT) are developing new approaches and technologies for building cooling equipment and air...
Ionic liquids in combination with CO2: promising technology?
A group of scientists at the University of Notre Dame, Indiana, USA, are now working on utilizing novel ionic liquids – pure salts that are liquid at ambient temperatures – in tandem with CO2.
IIR news
5 results
New IIR Informatory Note on evaporative cooling
The latest IIR Informatory Note highlights that evaporative cooling is an energy-efficient technology that has many applications in air conditioning but also in short-term food storage.
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...
Call for industrial partners for joint industry cryogenics project linked to LNG production
Become a project partner: Join the Joint Industry Project of MINES ParisTech – ARMINES “Evaluation of the crystallization risk in LNG production”.
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.
Highlights: the 25th IIR Congress 2019 brings together over 850 delegates
The congress attracted over 650 papers, including 530 oral presentations, 72 posters, 17 keynotes and 1 plenary session, as well as 9 workshops, 10 IIR Commission and Working Group meetings, and 4 technical tours.
Encyclopedia of Refrigeration
6 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...
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...
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...
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...
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...
