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IIR document
Gradual fault early stage diagnosis for air source heat pump system using deep learning techniques.
Performance analysis of different ternary NH3-H2O-salt absorption heat pump cycle combined with electrodialysis technique.
Recommended by the IIR
Implementation of innovative measurement technique for precise experimental characterization of frost growth in a heat pump evaporator.
Recommended by the IIR / IIR document
Retarding frosting of an air source heat pump by using vapor-bypassed evaporation technique.
Investigation of air-source heat pump using heat pipes as heat radiator.
Primary-secondary de-coupled ground source heat pump systems coefficient of performance optimization through entering water temperature control.
Modeling and validation of the effects of soft faults on the operation of an air source heat pump in cooling mode.
Extremum seeking control for an air-source heat pump water heating system with flash tank cycle based vapor injection.
Experimental study on the performance of a vapor injection high temperature heat pump.
Model-free control of vapor-injection air-source heat pump based on multivariable extremum seeking.
Solar heat pump systems for heating applications: Analysis of system performance and possible solutions for improving system performance.
Modeling and analysis of ground-source heat pump system on low GWP refrigerants for domestic applications.
Análisis experimental de una bomba de calor geotérmica en una instalación residencial durante 2 años de funcionamiento.
Experimental analysis of a geothermal heat pump in a residential installation during two years of operation.
Non-intrusive performance assessment method for heat pumps: experimental validation and robustness evaluation facing faults.
Thermal performance of ground source heat pump using steel pipe pile for house.
Refrigeration sector monitoring
35 results
Heat pumps without compressors: Fraunhofer advances electrocaloric technology
A consortium or researchers in Fraunhofer-Gesellschaft research organisation, Germany, made great progress in terms of material and system design, and set up the first demonstrators for electrocaloric heat...
Frost mitigation methods for heat pumps and refrigeration systems
Frost growth is an important issue since defrosting can represent up to 30% of the total energy consumption of refrigerated display cabinets. Review of the various frost mitigation technologies and latest...
IIR conference report: Padua
Two IIR events organized by Prof. Renato Lazzarin have just been held in Padua, Italy: - Sources/Sinks alternative to the outside Air for Heat Pump and Air-Conditioning Techniques took place on April 5-7, 2011. Heat sources and heat sinks of...
A propane heat pump with compact bionic heat exchangers
In Germany, Fraunhofer has developed a propane heat pump using compact finned heat exchangers with distribution boxes whose structure is inspired by nature.
High temperature heat pumps to increase energy efficiency of industrial processes
Summary of an article published in the International Journal of Refrigeration.
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.
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...
Reducing the economic costs of a direct-use geothermal heating system
Italian researchers have modelled a polymer heat exchanger to reduce the cost of a direct-use geothermal heating system for a single building in the active volcano district of the...
A promising solar heat pump system for cold climates
A simulation of a novel solar-assisted ground source heat pump system shows promising results for improved energy efficiency and reduced soil freezing in cold climates.
North American geothermal heating and cooling markets
Geothermal heating and cooling technologies may hold the key for an increase in overall energy efficiency in non-residential buildings.
Geothermal heat-pump under supermarket car park
Walmart’s new 12,540 m² prototype store in Burlington, ON, Canada is equipped with a geo-heat exchange heating and cooling system using 15 km of pipes under the store’s parking lot.
Potential of natural refrigerants in China, the case of the heat pump market.
Summary of a paper presented during the 12th IIR Gustave Lorentzen conference on Natural refrigerant, available in Fridoc.
A ground source heat pump at Cornell
The Bloomberg Center at the tech campus of Cornell University (New York, USA) was recently equipped with a Ground Source Heat Pump (GSHP).
The high potential of ground-source heat pumps to decarbonise the European building sector
A potential reduction of 20-40% and 30-50% of energy demand in buildings, for heating and cooling respectively, could be achieved through increased use of geothermal heat pumps.
World’s largest CO2-based seawater heat pump goes live in Esbjerg, Denmark
This 70 MW heat pump now provides renewable district heating, supporting Esbjerg’s transition to carbon-neutral energy by 2030.
IIR news
13 results
Ammonia and CO2 Refrigeration Technologies conference papers now available to download
See you at the 2nd China Heat Pump Conference in 2024
Join this co-sponsored IIR conference on heat pumps in China set to be bigger than the first!
Member news: Carrier launches a high-temperature heat pump with R290
Carrier introduces its first high-temperature air source heat pump designed for commercial applications, using R290 to enhance efficiency.
Member news: GEA implements an innovative high-temperature heat pump at a Tiense Suiker production site
GEA has developed a high-temperature industrial heat pump utilising heat recovery, with reduced emissions.
New IIR Informatory Note on Air-source heat pumps for space heating and cooling
The IIR has issued a new Informatory Note on Air source heat pumps for space heating and cooling. A summary for policymakers and a Chinese version of this note have also been published.
IIR Conference report: Ohrid
The 4th IIR Conference on Ammonia Refrigeration Technology took place in Ohrid, Macedonia (FYROM), on April 14-16, 2011. 111 persons from 33 countries attended. Scientific papers were presented, and policy and regulations issues were covered.
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...
FRIDOC now features a selection of MDPI articles on refrigeration
About 150 articles from MDPI journals, including review articles on various refrigeration technologies, are available in FRIDOC.
The 21st European Conference on RACHP technologies is just around the corner
The 21st edition of the European Conference RACHP, co-organised by UNEP, IIR, and Centro Studi Galileo, will take place in Milano on June 12-13, 2025.
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.
Call for abstracts now open: 10th IIR Conference on Caloric Cooling and Applications of Caloric Materials (Thermag 2022)
To be hosted by the University of Ljubljana – Faculty of Mechanical Engineering this August, the call for abstracts has been launched for the 10th edition of the IIR Thermag conference...
ICR2015: A stimulating environment for dynamic exchanges
With a focus on improving standards and the quality of life of many worldwide, as well as emphasising the importance of preserving the earth through the advancement of refrigeration applications and technology, ICR2015 is expected to attract a...
Yokohama e yokoso !
From 16 to 22 August 2015, the IIR International Congress of Refrigeration (ICR), recognised internationally as a milestone refrigeration event, will bring together key refrigeration stakeholders from across the globe at the Pacifico Yokohama...
Encyclopedia of Refrigeration
4 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...
Global warming potential (GWP) of HFC refrigerants
Using the latest updated data from UNEP’s RTOC 2022 report, we have compiled the 100-year GWP and 20-year GWP values of hydrofluorocarbon-based (HFC) refrigerants. Our table includes...
Environmental impact of the ice cream industry
This summary document describes the environmental impact of ice cream manufacturing, which is mainly due to the energy consumption and refrigerants used.
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...
Events
1 result
Other event
15th IEA Heat Pump Conference
May 26, 2026 - May 29, 2026
Vienna, Austria
Join the 15th IEA Heat Pump Conference, which will take place in Vienna, Austria,from May 26-29, 2026! The 15th IEA Heat Pump Conference, co-sponsored by IIR,...
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