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IIR document
A computational study for characterizing cavitating flow in hydrofoils operating at cryogenic conditions.
Cavitation effects and heat transfer of saturated water-lubricated journal bearings for a turbo machine.
Analysis of lubricity and cavitation problem of oil and refrigerant mixture for hermetic compressors.
Numerical analysis on cavitation of LNG in micro clearance of self-lubricated journal bearing.
Numerical simulation on the opening delay of a discharge reed valve in compressors.
Sizing, selecting pumps and circulators.
Design and operational experience of the superconducting third-harmonic cavity at SLS and ELETTRA.
Reducing the noise from the cavity by tuning the compressor’s oil level.
Thermal and hydraulic performance of natural convection in a rectangular storage cavity.
Two-phase lubrication characteristics of journal bearing in refrigerant-oil system under high-pressure environment considering gaseous cavitation.
Effect of concentration on R134a/Al2O3 nanolubricant mixture boiling on a reentrant cavity surface.
Experimental and numerical study on characteristics of super-linear mass flow rate and asymmetric cavitation in novel rotary-baffle curved-channel electronic expansion valve for refrigerator.
The Gersemi vertical cryostat at FREIA.
Narrow gas gap in cryogenic heat switch.
Recommended by the IIR / IIR document
The first tests on the vertical cryostat Gersemi with the liquid insert at FREIA laboratory.
Refrigeration sector monitoring
236 results
A new cooling technique for superconducting cavities of particle accelerators
A team of researchers is developing a new method to cool the superconducting cavities of particle accelerators, which could make them more compact.
Optical cavity cooling: a quantic leap for optical refrigeration?
A team of researchers at the Niels Bohr Institute have combined laser cooling technology with nano-physics, and have discovered a revolutionary way of bringing a semi-conductor nano-membrane’s temperature down to -269°C.
Worldwide adoption of MEPS on the rise
Over 100 countries now use mandatory minimum energy efficiency performance standards or energy labels for the most common appliances, according to the IEA Energy Efficiency 2022...
How to improve the energy efficiency of cold stores in India
A report commissioned by the World Bank Group presents energy efficiency measures for the design of post-harvest and cold storage warehouses in India.
Top world energy efficiency rankings.
Germany continues to lead the world in energy efficiency, Italy and Japan follow.
Defining energy efficiency indicators for refrigerated shipping vessels
A working group from the International Maritime Organisation (IMO) has proposed new energy efficiency indicators for ships. Shipping companies challenge their...
Energy efficiency, key to achieving net zero emissions
At the 8th IEA World Conference on Energy Efficiency, 45 countries pledged to increase their efforts in energy efficiency, a pillar of the global energy transition towards net zero emissions by...
The most ambitious energy efficiency standards compared
The CLASP compared MEPS requirements across ten of the world’s most carbon-intensive economies.
Road to COP28. Energy efficiency and recovery of refrigerants
“Sustainability must refer to energy efficiency and circularity”, says Dr Laura Fedele, IIR expert.
Impact of ageing on the energy efficiency of refrigerating household appliances
A recent study shows an average increase in energy consumption of 11% after 2 years of operation and 27% after 16 years for these appliances. Ageing wall insulation and door gasket contribute to this...
United States: more stringent energy efficiency standards for refrigerators
The US Department of Energy imposes targets for reducing the energy consumption of refrigerators and freezers by 10 to 15% by 2029-2030
Efficiency of ground source heat pump systems
Ground source heat pumps (GHSP) have been reported to be more efficient than more widespread air source heat pumps despite higher installation costs. A recent article has reviewed parameters impacting the energy...
Heat pump efficiency at low temperatures
A study based on field data shows that heat pumps had significantly higher energy efficiency than oil or gas heating systems, particularly for outdoor temperatures above -10°C.
Road to COP28: Energy efficiency, the key to sustainable cooling in Africa
According to Francis Sempore, director of ECREEE, energy efficiency is a key sustainability issue that needs to be promoted, funded and supported through the implementation of...
Positive impact of recent MEPS on the air conditioner market in China
In June 2023, CLASP published a report highlighting how a recent, more stringent MEPS precipitated the rise of more efficient air conditioners in just two years.
IIR news
135 results
Energy efficiency on the agenda for discussion during Montreal Protocol meetings in Vienna
Focus on the fruitful workshop on "the energy efficiency opportunities while phasing down hydrofluorocarbons (HFCs)", which preceded the 40th meeting of the Open-ended Working Group (OEWG40) of the Parties to the Montreal Protocol on Substances...
IIR actively involved in the French-speaking African edition of the Twinning Workshops for Montreal Protocol officers, energy policymakers and finance officials
Officials from 21 French-speaking African countries gathered in Tunis for the third Twinning Workshops, focusing on sustainable refrigeration and energy efficiency. Souhir Hammami and Marco Duran from the...
IIR member news: Angelantoni Group
“COLD ENERGY” is an innovative solution to improve energy efficiency both for old and new compression refrigeration systems by transferring a highly efficient automotive technology to enhance energy recovery of heat exchangers.
BETTED: a new IIR EU funded project
This project aims to promote the energy transition of the dairy value chain. The kick-off meeting is scheduled for March 11-12 in Brussels (Belgium).
A look back at the IIR's presence at the Interclima trade fair
A big thank you to everyone who visited our stand at Interclima 2024!
Book your spot! Training session on food refrigeration systems
From July 1 to 5 2024, Professor Don Cleland will be leading a training workshop in London entitled “Cost-Effective Refrigeration”.
New IIR Informatory Note on Renewable Energy
The latest IIR Informatory Note stresses that renewable energy sources can be considered practically inexhaustible and are currently the only solution for an ecological transition to clean...
The CLIM’ECO programme kicks off
Supported by the French government and as part of the energy saving certificates scheme, the CLIM'ECO programme aims to reduce and optimise the energy consumption of air conditioning in the French Overseas Departments.
New IIR Informatory Note on the carbon footprint of the cold chain
The IIR has just issued a new Informatory Note on the carbon footprint of the cold chain. It highlights the food safety and environmental benefits of an improved global cold chain.
New IIR Informatory Note on passive cooling
The IIR’s latest Informatory Note demonstrates that passive cooling technologies can contribute significantly to reducing energy demand for air conditioning.
Workshop on Supermarkets during the 5th IIR Conference on Sustainability and the Cold Chain
The workshop had the aim of presenting recent findings by the UK EUED joint project on supermarkets, the SuperSmart project and the HPT Annex44 project.
IIR member news: Daikin signs a partnership on CO2 capture
Daikin recently signed a partnership with Doshisha University in Kyoto to work on CO2 capture and higher efficiency air conditioners.
Clim'Eco: the IIR is a partner of this new program, which began this year in Réunion.
This program aims to promote a reasonable use and good maintenance of air conditioning in the French overseas departments.
The IIR takes part in a UNIDO project
The IIR has been successful to a UNIDO call for proposals to assess the incremental and operating cost for improved Energy Efficiency in retail refrigeration in Jordan and Tunisia.
IIR at COP29 in Baku: Week 1 in review
The first week of COP29 in Baku, Azerbaijan, brought together global leaders, scientists, and industry stakeholders to tackle pressing climate issues. Among the key participants, the...
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...
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 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...
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...
