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Thermal nexus model for the thermal characteristic analysis of an open-type air-cooled induction motor
Smart cooling system of the double loop coolant structure with engine thermal management modeling.
A thermal performance factor for evaluation of active engine cooling with asymmetric heating.
Improving Thermal Efficiency of Internal Combustion Engines: Recent Progress and Remaining Challenges.
IIR document
Exergy analysis of electrically- and thermally-driven engines to drive heat pumps: An exhaustive comparative study.
Study of different cooling structures on the thermal status of an Internal Combustion Engine.
Design and operation of a thermal harshness test facility for electric motors in hermetic environments.
Ammonia as natural refrigerant in electrically and thermally driven engines for heat pumps.
Thermoeconomical method of analysis of efficiency of air cooling at engine intake by waste heat recovery cooling machines.
[In Ukrainian. / En ukrainien.]
Thermal performance of a diffusion absorption refrigeration system driven by waste heat from diesel engine exhaust gases.
Transient cooling effect analyses for a permanent-magnet synchronous motor with phase-change-material packaging.
Thermal performance of oil spray cooling system for in-wheel motor in electric vehicles.
A three-dimensional CFD simulation study to reduce heat stress in ships.
Thermodynamic analysis of an absorption refrigeration system used to cool down the intake air in an Internal Combustion Engine.
Field testing of a transcritical organic Rankine cycle (ORC) engine coupled with concentrating photovoltaic thermal collectors.
Refrigeration sector monitoring
22 results
R1234yf as a working fluid in Organic Rankine Cycle systems
A recent review article presented the use of HFO R1234yf and its mixtures in Organic Rankine Cycle (ORC) systems, namely in applications for waste heat recovery from internal...
Refrigerated transport: innovations and challenges for sustainability
Review of the most promising technologies for refrigerated transport: vapour compression systems with natural refrigerants, photovoltaic systems with electrical energy storage,...
Design and operation of district heating and cooling systems supplied by renewable energy sources
A report published by the European Commission analyses 8 efficient district heating and cooling systems in different Member States.
An ejector refrigeration system optimised for sub-zero temperatures on fishing vessels
Large amounts of diesel fuel are used to power fishing vessels engines and on-board refrigeration systems. In a recent theoretical study, an energy-efficient sub-zero refrigeration system proposed based on a...
Artemis I mission: cryogenic system failure delays launch
Due to a liquid hydrogen leak in the rocket's core stage, NASA is postponing the launch of the Artemis I mission until late September or October 2022.
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.
Solar heating and cooling: key trends and challenges
In 2020, the solar thermal energy yield amounted to 407 TWh, which correlates to savings of 43.8 million tons of oil and 141.3 million tons of CO2. Although still only a niche market, solar cooling...
Earth-to-air heat exchanger for air conditioning in a Colombian tropical weather
In a recent theoretical study, a passive cooling system using an earth-to-air heat exchanger (EAHE) was modelled for the Colombian tropical weather.
Cooling solutions for hybrid electric aircraft
The electrification of aircraft propulsive systems requires specific cooling technologies as part of the decarbonation of the aviation industry. A recent review article presents...
Latest research on ammonia-based absorption refrigeration systems
A recent article has reviewed literature on absorption chillers that use ammonia as a refrigerant, along with water (H2O), lithium nitrate (LiNO3), and lithium nitrate + water...
Novel catalysts to address overheating in hypersonic aircraft
Researchers at Australia's RMIT University have developed 3D-printed catalysts to address the challenge of overheating in hypersonic aircraft and possibly other industrial...
For IIR members only
CO2, one of the options for reducing the carbon footprint of refrigerated transport
Comparison of CO2 emissions from refrigerated transport units using R744 and HFC-134a and overview of solutions that could reduce the carbon footprint of this sector.
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.
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...
Reclaiming waste heat from ice rinks’ refrigeration systems to save energy
Several studies and recent cases studies show that heat recovery from the refrigeration system is the biggest energy-saving measure in ice rinks.
IIR news
5 results
New IIR Working Group “Electric vehicle thermal management systems”
This new working group, which focuses on a topical theme, is headed by Xianting Li, new President of Section E.
See you at the 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants 2024
The next IIR-Gustav Lorentzen conference will take place from 11 to 14 August 2024 at the University of Maryland - College Park (Maryland), USA.
15th IIR-Gustav Lorentzen Conference, June 13-15, 2022: the detailed programme is now available!
The detailed program of the 15th IIR Gustav Lorentzen Conference on Natural Refrigerants is now available online.
New IIR Informatory Note on automotive air conditioning
The latest IIR Informatory Note presents recent technological trends in automotive air conditioning, in particular for electric cars, and outlines the challenges in terms of energy efficiency and CO2...
ENOUGH – a new project that will identify how food industry can become net zero by 2050
The project will develop technologies, tools and methods to contribute to the EU’s farm to fork Strategy to achieve climate neutrality in the food industry.
Encyclopedia of Refrigeration
3 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...
Ice cream manufacturing, environmental impact and market data
From a physico-chemical point of view, ice cream is a complex, frozen multiphase mixture. The manufacturing process includes several stages of freezing which are described in this...
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...