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Heat pump clothes dryer model development.
Energatski aspekti sušenja drveta.
Energy aspects of wood drying.
IIR document
A novel air-source heat pump system with integrated desiccant for electric vehicles.
Research progress of air source heat pump heating system suitable for cold area applications.
Recommended by the IIR / IIR document
Comparative performance analysis of a solar assisted heat pump for greenhouse heating in Tunisia.
Performance analysis of a heat pump system with integrated desiccant for electric vehicles.
Experimental and numerical analysis of environmental control systems for resilient extra-terrestrial habitats.
System analysis and optimization of a CO2 heat pump tumble dryer.
Theoretical evaluation of cooling and heat-pump operation of an environmental test chamber using CO2 as refrigerant.
High-temperature heat pump for wellness applications using CO2 as a refrigerant.
Performance evaluation and validation of a novel heat pump water heater with rotary compressor and D-shaped condenser coils.
Model based performance analysis of a transcritical combined heating and cooling CO2 cycle for a school cantina in India.
First experimental results of a R744 water-to-water heat pump for space heating.
Operation of large-scale heat pumps under fluctuating boundary conditions.
Geothermal heat pump applied eggs incubation.
Refrigeration sector monitoring
29 results
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...
Purdue conferences highlights: development of high-temperature heat pumps
High-temperature heat pumps are currently subject to intense R&D work, as illustrated by several papers presented at Purdue last year. All Purdue papers can now be downloaded from the Fridoc database.
Heat pumps a promising way to extend electric vehicles' range
Two articles recently published in the International Journal of Refrigeration highlight heat pumps – especially with integrated desiccant – as a promising way to extend the range of electric vehicles.
World’s largest seawater air-conditioning system commissioned in Tahiti
Thanks to this system, the cold waters of the deep will cool the French Polynesia Hospital Center, saving at least 2.5 million euros of electricity per year.
USA's largest ground-source heat pump
The conversion of Ball State University in Muncie, Indiana, to a geothermal ground-source heat pump, reportedly the largest project of its kind in the USA, has entered its second and final phase.
Optimisation of a heat pump for satellite cooling
Satellites are deployed into near earth orbit in order to provide a platform for a wide range of missions, including telecommunications systems, surveillance systems and astronomical systems.These systems have seen a large increase in...
Energy efficiency comparison of air-conditioning systems in electric vehicles
A study compares the energy efficiency of conventional refrigeration systems with that of heat pumps in mobile air conditioning. R744, R134a and R1234yf are considered. Reversible heat pumps are found the most energy-efficient systems.
The global refrigeration compressor market
Bien que pénalisé par la pandémie de Covid-19 qui a fortement impacté le secteur du conditionnement d’air, le marché des compresseurs a progressé dans certains domaines tels que la chaîne du froid, l’industrie...
Next generation of working pairs in absorption heat pumps
The history and latest developments in working pairs for absorption heat pumps were discussed in a recent review article.
Caloric cooling: state of the art and perspectives
A recent IJR article reviews the most significant results obtained over the past ten years in the field of magnetocaloric cooling and more recently in the field of electrocaloric, elastocaloric and barocaloric cooling. It also presents the...
ICR2019: overview of current refrigeration research topics (part IV)
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.
IEA proposes common taxonomy to harmonise global heat pump data
An initiative led by the International Energy Agency (IEA) aims to improve the consistency of global heat pump market data through a common classification framework. Developed in collaboration with stakeholders...
Germany: Blue Angel ecolabel now includes heat pumps and liquid coolers
The 2023 edition of the German “Blue Angel” ecolabel now includes domestic heat pumps and “liquid coolers”.
Germany: IIR Junior Member C. Vering shows heat pumps can cut GHG emissions by 91%
C. Vering, C. Zibunas, et al. investigated the environmental performance of switching from boilers to heat pumps in residential buildings across Germany using life cycle assessment, in a study published recently...
China issues action plan to advance its heat pump industry
In April 2025, a group of China’s ministries and governmental bodies jointly released an “Action Plan for Promoting High-Quality Development of the Heat Pump Industry”.
IIR news
31 results
Past events: The IIR around the world, August and September 2024
A look back at the IIR’s latest events during conferences (Gustav Lorentzen, Thermag, Compressors) and during sponsored vents (CHPC).
IIR’s historical commitment to heat pump excellence and sustainable solutions
IIR is committed to supporting, informing and connecting scientists, policymakers, manufacturers and end-users of heat pump technologies through reference publications and dedicated...
The importance of heat pump data for policymaking: Insights from the IEA workshop
On January 23, the IIR participated in the workshop “The importance of heat pump data for policymaking and innovation,” organised by the IEA in Paris.
Spotlight on Commission B2: at the forefront of refrigerating equipment
Coordinated by the IIR Science and Technology Council, Commission B2 focuses on promoting knowledge of refrigerating equipment technologies and their applications worldwide.
Heat pumps, the central theme of the recent IIR Congress
An overview of the research carried out in the field of heat pumps, with the aim of achieving greater flexibility and increased energy efficiency, in particular through to the use of thermal energy...
Review of F-gas regulation - IIR contribution
The IIR has responded to the European Commission consultation “Fluorinated greenhouse gases – review of EU rules (2015-20)” which aims to collect opinions and suggestions about the update of the F-gas Regulation...
Press and media kit
The IIR's press and media kit contains useful links as well as our logo and guidelines.
Commission E2: at the forefront of heat pumps and energy recovery
Activities of the IIR’s Commission E2 “Heat Pumps, Energy Recovery”
Invitation to join the IIR working group: Solid-state cooling and heating
Established last year, this latest IIR working group aims to promote international research collaboration to provide energy efficient and environmentally friendly solutions for a variety of solid-state...
IIR member news: A new BSRIA study on the global compressor market
A recent study by BSRIA shows that sales of refrigeration compressors in 2022 are expected to reach 502 million units with a value of USD 48.6 billion, up 15% year-on-year.
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!
Call for abstracts now open! 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants
Prospective authors of papers are encouraged to submit 150-200 word abstracts by September 15, 2021.
New IIR Working Group on Solid-State Cooling and Heating
Initiated by Andrej Kitanovski (Slovenia), this working group's first objective is to promote international research collaboration in the areas of solid-state cooling, heat pumps, and energy...
Now freely accessible: The IIR International Dictionary of Refrigeration
Now available in 11 languages, the complete version of the IIR International Dictionary of Refrigeration is freely accessible online!
IJR Editorial: The IIR on the board of the international network of women in cooling
Women are significantly and visibly under-represented in the refrigeration industry. A preliminary evaluation has demonstrated that around 6% of women are members of national refrigeration and air-conditioning...
Encyclopedia of Refrigeration
2 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...
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...
