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IIR document
Enhancing heat rejection from electronic devices with a supercritical carbon dioxide minichannel heat exchanger.
The effect of HTS heat rejection conditions on performance of reverse Brayton cryocooler.
Optimal heat rejection pressure of CO2 heat pump water heaters based on pinch point analysis.
Experimental evaluation of a triple-state sorption chiller.
Gascooler optimal pressure revisited.
Zero gradient control for R-744 refrigeration cycles.
Recommended by the IIR
CO2 refrigeration for the detectors at CERN. Reliability and energy efficiency.
Alternative refrigerants for the primary circuit of an indirect commercial refrigeration cascade system.
Design and experimental results of a hybrid water/lithium bromide absorption-compression chiller.
Performance improvement of a large chilled-water plant by using simple heat rejection control strategies.
Measurement of static heat leak and dynamic heat releases for NICA SC magnets.
A study on the real time optimal control method for heat rejection pressure of a CO2 refrigeration system with an internal heat exchanger.
Heat rejection coolers for absorption chillers – theory and field test results.
Data center heat rejection: indirect air-side economizer cycle.
Heat rejection from R744 near the critical point.
Refrigeration sector monitoring
23 results
Experimentation of a film rejecting 70% of solar heat
A team of researchers explored the ability of a phase-change material film set on windows to reject incoming solar heat.
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...
Cold stores: how to achieve net zero emissions?
The UK Cold Chain Federation recently released a report presenting technologies to help temperature-controlled warehouses achieve net zero emissions.
U.S. Department of Energy funds 15 projects for more efficient cooling of data centres
As part of the country’s goal to achieve net-zero carbon by 2050, over 40 million USD funding to support the development of high-performance, energy efficient cooling solutions for...
White paint reduces air conditioning demand
A team of researchers has developed a radiative cooling paint that keeps surfaces more than 1.7 °C cooler than their ambient surroundings (at noon).
5th generation district heating and cooling networks in Europe
A recent generation of district heating and cooling networks is developing in Europe, using low temperature renewable energy heat sources (such as shallow...
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.
US to ban high-GWP refrigerants
A rule proposal by the US Environmental Protection Agency (EPA) provides that all high-GWP HFCs, including R134a, R404A and R410A, will be banned in most new refrigeration equipment...
IIR Rankine Conference 2020: Which alternative working fluids for ORC systems?
HFOs (hydrofluoroolefins), HCFOs (hydrochlorofluoroolefins) and hydrocarbons were the main alternatives to HFC245fa presented during the IIR Rankine Conference 2020.
Road to COP28. Extending the temperature range and application for heat pumps
To promote decarbonation, “high temperature heat pumps should be designed using waste heat and renewables as a driving energy, and environmentally friendly working fluids”, according...
LNG cold energy recovery for salmon aquaculture
A team of Korean researchersis proposing a novel application of LNG cold energy recovery for aquaculture.
Road to COP28. How can we achieve sustainability in gas processing and liquefaction?
In gas processing plants, focus should be set on non-flaring operation and reduction of releases caused by leaks, says Dr Heinz Bauer, IIR expert....
Cryogenics 2019: NICA project aims at studying the state of matter existing shortly after the Big Bang
NICA project for a new superconducting accelerator complex in Russia attracted a lot of interest during IIR Cryogenics conference in Prague, in April 2019.
Alternatives to replace R404A for refrigerated transport
With about 5 million refrigerated vehicles operating worldwide, there is active research and development focusing on identifying alternatives to R404A, which is traditionally used in truck and trailer...
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
6 results
Refrigeration Safety Working Group Congress meeting
Refrigeration Safety Working Group Congress meeting ICR 2019 offers opportunities for industry experts to meet and discuss improvements in refrigeration safety. With the upcoming...
Discover the 33rd IIR Informatory Note on "Cogeneration/Trigeneration"
This Informatory Note discusses the operating principles of cogeneration and trigeneration as well as their advantages and challenges.
The IIR launches a call to action to adopt 5 internationally established refrigeration terms!
All professionals in the field of low-temperature technologies are called and are strongly encouraged to strictly adhere to the internationally established and approved definitions, by the International...
Call to action to adopt 5 internationally established refrigeration terms!
The IIR and the ASHRAE establish new definitions of five keywords in the refrigeration sector
For over a year, a group of experts from the International Institute of Refrigeration (IIR) and the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) have been working together to establish common definitions of...
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...
Encyclopedia of Refrigeration
2 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...
