Main menu
Search results
Search in FRIDOC
2500 results
Thermosiphon loop thermal collector for low-temperature waste heat recovery.
IIR document
Heat pump heat recovery options for food industry dryers.
Review of recent applications of heat pipe heat exchanger use for waste heat recovery.
Experimental study of gas-solid overall heat transfer coefficient in vertical tank for sinter waste heat recovery.
Performance evaluation of drain water heat recovery exchangers for heat pump water heaters.
Evaluation of heat pumping and waste heat recovery for battery electric vehicle thermal management.
Research on waste heat recovery from gas engine for auxiliary heating: An emerging operation strategy to gas engine-driven heat pump.
Performance evaluation of a capacity-regulated high temperature heat pump for waste heat recovery in dyeing industry.
Computational modeling and experimental validation of heat recovery ventilator under partially wet conditions.
A Graphical Method for Combined Heat Pump and Indirect Heat Recovery Integration.
Applications of absorption heat exchangers for kinds of waste heat recovery systems.
Heat recovery ventilation heat pump water heaters: status of the art and transition to propane.
Simulation on the performance of gas-fired boiler with flue gas heat recovery utilizing gas engine driven heat pump.
A review of thermoelectric generators in automobile waste heat recovery systems for improving energy utilization.
Research on waste heat recovery of low temperature flue gas in cement plant and new type heat exchanger.
Refrigeration sector monitoring
422 results
UK: a dual purpose heat pump chiller with heat recovery
A Salisbury District Hospital’s unit has recently been equipped with an innovative high efficiency heat pump chiller.
Single-fuel LNG ferries with waste heat recovery systems
A Dutch ferry operator has recently commissioned two new ships with single-fuel LNG engines. The ships are also equipped with a waste heat recovery system to generate electricity.
Waste heat recovery to eliminate the novel coronavirus in HVAC systems
A recent study proposes a technique for eliminating SARS-CoV-2 from cleanroom HVAC systems using the recovered heat of exhaust air. The modified system could be easily implemented in...
European heat pump market shows signs of recovery in 2025 after two-year decline
According to the EHPA, sales of heat pumps grew by 9% in the first half of 2025, a slight recovery after the 23% drop in 2024.
From waste to warmth: Geospatial information for UK waste heat recovery and Net-Zero energy systems
A new project led by London South Bank University (LSBU) aims to map and assess waste heat generated by cooling systems in urban areas, starting with Birmingham.
Renewable and recovered energies make up 66.5% of France’s district heating networks
District networks supply heating to more than 50,000 buildings and cooling to more than 1,600 buildings, according to FEDENE’s latest annual survey, conducted under the supervision of the French...
Data centre in Finland recovers waste heat
The companies Ericcson and Fortum signed an agreement to recover a data centre waste heat for district heating.
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.
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...
ICR2019: overview of current refrigeration research topics (part III)
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.
Solar-powered modular facade capable of cooling and heating a building
In Germany, researchers are testing a modular solar-powered facade that includes a mini heat pump for heating and cooling, and a decentralised ventilation unit with heat...
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...
Innovative HFO/CO2 cascade for supermarket application
An innovative CO2/R1234ze cascade refrigeration system with heat recovery has been installed into a 1500 m2 sales area supermarket in Parma, Italy.
Renewable energy for heating and cooling in the EU in 2021
The share of renewable energy sources for heating and cooling in the EU stagnated in 2021, due to the overall increase in gross consumption of all fuels as a result of the post...
Ejectors could improve CO2 transcritical system efficiency by up to 20% in Southern climates
Thanks to the ejectors, the annual energy efficiency improvement potential compared to traditional CO2 systems with parallel compression is between 10 to 20%, depending on the climatic region and the integration of heat recovery systems.
IIR news
187 results
Commission E2: at the forefront of heat pumps and energy recovery
Activities of the IIR’s Commission E2 “Heat Pumps, Energy Recovery”
Presentation of IIR Commission E2 activities by Per Lundqvist, President of Commission E2
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.
Two new IIR Informatory Notes on Energy Recovery!
The IIR has just published two new Informatory Notes on energy recovery: one on Energy Recovery in Mechanical Ventilation Systems and the other one on Air-to-Air Energy Recovery Equipment.
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.
ICR 2011 in Prague: a Resounding Success
The 23rd IIR International Congress of Refrigeration held in Prague, on August 21-26, 2011, was highly successful...
IIR Statement at COP30
Transcript of the official IIR delegation speech delivered at COP30 in Bélem, Brazil by Graeme Maidment, President of IIR Commission E2 : Heat Pumps and Energy Recovery.
Call for papers: 2014 International Sorption Heat Pump Conference
ISHPC 2014 extends abstract deadline until September 13, 2013
News from IIR members: Danfoss
A pleasant indoor climate and no energy costs. This is what it feels like to live in the Zero+ house - the first home in Denmark that produces more power than is actually consumed. The house supplies its own heating and electricity and generates...
The IIR publishes two new IIR Informatory Notes on Energy Recovery!
The International Institute of Refrigeration (IIR) has just published two new Informatory Notes on energy recovery: one on Energy Recovery in Mechanical Ventilation Systems and the other one on Air-to-Air Energy...
IIR publishes a new Technical Brief: Domestic heat pumps using hydrocarbons - Current status and market overview in Europe
At a time when the energy transition is at the top of the global agenda, the IIR is publishing a new Technical Brief on domestic hydrocarbon heat pumps. This strategic document...
News from IIR members: Mayekawa
Mayekawa has supplied 6 Pascal Air units to Fukazawa Reizo's refrigerated fish warehouse in Yaizu, Japan. The Pascal Air units were launched recently and comprise a turbo-type expander, a compressor, a primary cooler and a heat recovery heat...
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...
IIR participation at the China Refrigeration Expo 2026
The 37th International Exhibition for Refrigeration, Air-Conditioning, Heating and Ventilation, Frozen Food Processing, Packaging and Storage (China Refrigeration Expo 2026 – CHR 2026) took place from 8 to 10...
IIR Research Priorities
The IIR decided, within the framework of its Strategic Plan, to draw up a list of research priorities for the future. It hopes that these priorities will be a valuable guiding force for decision-makers in the public and private research sectors,...
Encyclopedia of Refrigeration
4 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...
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...
For IIR members only
Heat pump stock in Europe
This table presents the stock of installed heat pumps, the CO2 emissions avoided and the number of jobs in the heat pump sector in Europe.
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...
Events
3 results
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,...
Find out more
Sponsored event
2026 China International Heat Pump Conference
October 13, 2026 - October 17, 2026
Shanghai, China
Following the resounding success of the 2nd China Heat Pump Conference (CHPC 2024) in Shenzhen, which gathered over 850 experts and delegates from 33 countries & regions, the upcoming 3rd CHPC in 2026 is poised to further expand its global...
IIR event
17th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL 2026)
August 23, 2026 - August 26, 2026
Hamilton, New Zealand
Submit your abstract! With the increasing need for global warming countermeasures, natural working fluids have become a clear vector to reducing the CO2 footprint of...
