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IIR document

Heat from Underground Energy London (Heat FUEL).

• Author(s) : LAGOEIRO H. R. P., CURRY D., FAULKS G., et al.
• Publication date: 2019/08/24
• Languages : English
• Keywords : United Kingdom, Metro, Heat recovery, Heat pump, Case study, Cost, District heating, Waste heat, Heat exchanger
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

Recommended by the IIR

Échangeurs de chaleur, cours et exercices corrigés.

• Author(s) : MELLARI S.
• Publication date: 2020/12
• Languages : French
• Keywords : Heat exchanger, Seal, Fin, Plate exchanger, Heat transfer coefficient, Efficiency, Training
• Formats : PDF

Recommended by the IIR / IIR document

Experimental results of a high-temperature heat pump prototype with R1336mzz(Z) for various production temperatures.

• Author(s) : MOTA BABILONI A., BARRAGÁN-CERVERA A., UDROIU C-M., GIMÉNEZ-PRADES P., NAVARRO-ESBRÍ J.
• Publication date: 2023/08/21
• Languages : English
• Keywords : High temperature, Heat pump, R1336mzz(Z), Expérimentation, Prototype, Waste heat, COP, Low GWP, R245fa
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

A numerical modelling study on submerged condensers for heat pump water heaters using low-GWP refrigerants.

• Author(s) : ZHANG M., SHEN B.
• Publication date: 2022
• Languages : English
• Keywords : Propane, Domestic heat pump, Water heater, Modelling, Low GWP, Simulation, CFD, R290
• Source: 2022 Purdue Conferences. 19^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

A review of recent investigations on flow and heat transfer enhancement in cooling channels embedded with triply periodic minimal surfaces (TPMS). 

• Author(s) : YERANEE K., RAO Y.
• Publication date: 2022/12
• Languages : English
• Keywords : Review, Heat transfer, Porosity, additive manufacturaring, Heat exchanger, Mass transfer, Thermodynamic property
• Source: Energies - vol. 15 - n. 23
• Formats : PDF

IIR document

Experimental investigation of high-glide refrigerant mixture R1233zd(E)/R1234yf in a high-temperature heat pump.

• Author(s) : BRENDEL L. P. M., BERNAL S. N., ARPAGAUS C., WIDMAIER P., ROSKOSCH D., BARDOW A., BERTSCH S. S.
• Publication date: 2023/08/21
• Languages : English
• Keywords : Zeotropic mixture, High temperature, Heat pump, R1233zd(E), R1234yf, Expérimentation, COP, Glide, HFO, Industrial application, Thermodynamic cycle, Modelling
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

IIR document

Experimental assessment of the use of R515B as R1234ze(E) alternative in a small water-to-water heat pump.

• Author(s) : COLOMBO L. P. M., FRIGERIO D., LUCCHINI A., MOLINAROLI L.
• Publication date: 2023/08/21
• Languages : English
• Keywords : Expérimentation, R515B, R1234ze(E), Water-water, Heat pump, Drop-in, COP, Testing
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

A review of the mathematical models for the flow and heat transfer of microencapsulated phase change slurry (MEPCS).

• Author(s) : LI H., YU G., XU H., HAN X., LIU H.
• Publication date: 2023/03
• Languages : English
• Keywords : Heat transfer, Change of phase, Simulation, Model, Thermal energy storage, Review, Thermodynamic property, Modelling
• Source: Energies - vol. 16 - n. 6
• Formats : PDF

IIR document

Une nouvelle approche d'optimisation de pompe à chaleur tenant compte du couplage entre les réservoirs thermiques et le cycle.

• Author(s) : FEIDT M., COSTEA M.
• Publication date: 2021/12
• Languages : French
• Keywords : Heat pump, Optimization, Carnot, Cycle, Reversed cycle, Tank, COP, Energy consumption, Review, Modelling
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 132
• Formats : PDF

IIR document

Measurements of pρTx and specific heat capacity cv for (R290 + R1243zf) binary mixtures at temperatures from (292 to 350) K and pressures up to 11 MPa.

• Author(s) : SHENG B., DONG X., ZHAO Y., LI Z., YAN H., ZHONG Q., WANG J., GONG M., SHEN J.
• Publication date: 2020/04
• Languages :
• Keywords : R290, Propane, R1234zf, Thermodynamic property, Temperature, Pressure, Heat capacity, Expérimentation, Mixture
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 112
• Formats : PDF

Control of Heat Transfer in a Vertical Ground Heat Exchanger for a Geothermal Heat Pump System.

• Author(s) : SALHEIN K., KOBUS C. J., ZOHDY M.
• Publication date: 2022/07
• Languages : English
• Keywords : Geothermy, Ground-source system, Heat pump, Modelling, Case study, Heat transfer, Heating, Cooling, Simulation
• Source: Energies - vol. 15 - n. 14
• Formats : PDF

IIR document

Investigation of air-source heat pump using heat pipes as heat radiator.

• Author(s) : XU S., DING R., NIU J., et al.
• Publication date: 2018/06
• Languages : English
• Keywords : Heat pipe, Air-source system, Heat pump, Performance, Expérimentation, COP, Heating
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 90
• Formats : PDF

Range of application of heat pumps – Implementation of heat pumps with different heat sources.

• Author(s) : BOCKELMANN F., PETER M., SCHLOSSER M.
• Publication date: 2021/08/31
• Languages : English
• Keywords : Heat pump, Heat exchanger, Absorption system, Adsorption system, District heating, Solar thermal system, Heat source, Geothermy, Borehole, Design, Programming, Compression system
• Source: 13^th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
• Formats : PDF

IIR document

Comparison of heat exchange rates between straight and slinky horizontal ground heat exchanger.

• Author(s) : SELAMAT S., MIYARA A., KARIYA K.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Spleen, Heat transfer, Ground, Simulation, Heat pump, Heat exchanger
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Heat transfer in horizontal ground heat exchangers.

• Author(s) : KUPIEC K., LARWA B., GWADERA M.
• Publication date: 2015/01/22
• Languages : English
• Keywords : Geothermy, Temperature variation, Heat transfer, Ground, Modelling, Heat exchanger
• Source: Applied Thermal Engineering - vol. 75

Residential CO2 heat pump system for combined space heating and hot water heating

This paper was presented at the IIR Gustav Lorentzen Conference in Glasgow (Sep. 2004). A theoretical and experimental study was carried out for a residential brine-to-water CO2 heat pump system for combined space heating and hot water heating - a...

• Publication date : 2004/11/24

Heating and cooling ceilings

The upcoming translation of European Directive 2002/91/EC on improving energy efficiency in buildings into EU national legislation in January 2006 calls for a clear improvement in the energy efficiency of cooling and heating systems. In view of...

• Publication date : 2005/10/26

Buildings: heating and cooling equipment roadmap

At the request of the G8, IEA is developing a series of roadmaps for some of the most important technologies needed for achieving a global energy-related CO2 emissions target in 2050 of 50% below current levels. Energy-efficient Buildings: Heating...

• Publication date : 2011/08/11

Markets: Reduced cooling and heating might improve health

Results of a study performed by Berkeley Lab. - a US Department of Energy national laboratory - suggest that operating buildings in ways designed to save energy - with indoor temperatures slightly cooler in winter and warmer in summer - does more...

• Publication date : 2009/05/18

New combined CO2 heat pump and solar heating system.

The Institut für Thermodynamik at the Technical University of Braunschweig (www.ift.tu-bs.de) has developed a new heating system based on a CO2 heat pump connected with a solar storage tank. A...

• Publication date : 2007/12/03

GL2012 highlights: compact CO2 air-heating heat pump for industrial drying

Researchers in Japan studied and developed a small capacity CO2 heat pump for industrial drying that is hoped will reduce power consumption to about one third.

• Publication date : 2012/10/04

ARI Publishes the Statistical Profile of the Air Conditioning, Heating, and Refrigeration Industry

On October 7, 2004, the Air-Conditioning and Refrigeration Institute (ARI) published the 2004 edition of the Statistical Profile of the Air Conditioning, Heating, and Refrigeration Industry. This publication provides statistical data, from...

• Publication date : 2004/11/19

Heating and air conditioning no longer the major part of US home energy use

Estimates from RECS, recently published by the US Energy Information Administration, show that 48% of energy consumption in US homes in 2009 was for heating and air conditioning, down from 58% in 1993.

• Publication date : 2013/09/10
• Subjects: Figures, economy

Experimental Study on Automotive Cooling and Heating Air Conditioning System Using CO2 as a Refrigerant

This paper was presented at the IIR Gustav Lorentzen Conference in Glasgow (Sep. 2004). It presents an experimental study on automotive cooling and heating air conditioning systems using CO2 as refrigerant. Recently, as one of the countermeasures...

• Publication date : 2004/11/24

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...

• Publication date : 2021/10/22
• Subjects: Technology

EU: first Heating and Cooling Strategy

UE: towards a smart, efficient and sustainable heating and cooling sector.

• Publication date : 2016/06/08
• Subjects: Regulation

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...

• Publication date : 2022/02/28
• Subjects: Technology

Heat pumps : the core technology for sustainable heating

A recent report by the IEA highlights that heat pumps are essential to reducing the use of natural gas for heating, while improving energy security, reducing emissions and ensuring...

• Publication date : 2023/01/26
• Subjects: Environment

Radiative cooling: smart materials to switch from heating to cooling

Researchers have developed a radiative thermal management device, composed of several layers of reflective/absorbent materials, capable of switching between heating and cooling...

• Publication date : 2022/09/28
• Subjects: Technology

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.

• Publication date : 2013/10/02

Join our training course and officially become a new Ambassador for clean cooling and heating!

Experts and representatives from three sister projects in different regions of the world: ENOUGH in Europe, INDEE+ in India and ACES in Africa are arranging a free one-hour training course on clean cooling and...

• Publication date : 2023/06/30
• Subjects: Environment, HFCs alternatives

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...

• Publication date : 2022/07/08

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.

• Publication date : 2021/02/23

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...

• Publication date : 2023/05/02
• Subjects: Technology

Member news: Daikin introduces EWYS-4Z: High-Efficiency Cooling and Heating Solution for Industrial and Commercial Needs

The polyvalent EWYS-4Z cooling and heating unit, which runs on R513A, is designed for superior energy efficiency and reduced noise for industrial and commercial applications. 

• Publication date : 2024/08/01

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...

• Publication date : 2019/03/18

SophiA at ESEF 2024 in Abidjan

SophiA will organise a 3-hour hybrid workshop focused on ongoing solar cooling and heating projects in the ECOWAS region.

• Publication date : 2024/10/25
• Subjects: Developing country

Call for abstracts for the IIR International Rankine 2020 Conference

Submit your abstracts online today for the next Rankine Conference on Advances in Cooling, Heating and Power Generation. Deadline ends 13th September 2019.

• Publication date : 2019/05/21

Rankine 2020 conference highlights opportunities and challenges for the future

The IIR Rankine 2020 – Advances in Heating, Cooling and Power Generation conference was organised by the Institute of Refrigeration UK (IOR) as an ambitious 5-day online event running across July 27-31.  It...

• Publication date : 2020/08/19
• Subjects: Technology

HARFKO 2015: More successful than ever welcomes UNEP Ozone2Climate Roundtable & Roadshow

Last week the IIR was delighted to participate in the 13th Heating, Air-conditioning, Refrigeration & Fluid Exhibition – KOREA (HARFKO 2015).

• Publication date : 2015/03/18

IIR International Conference Rankine 2020 - Register today!

Access the IIR International Conference Rankine 2020 – Advances in Cooling, Heating and Power Generation on demand this summer – view the sessions you want when you want. 

• Publication date : 2020/07/21
• Subjects: Technology

IIR with INWIC at the WiHVACR Annual Conference

From 6th to 8th November 2023, the 20th Women in Heating, Ventilation, Air Conditioning and Refrigeration (WiHVACR) Annual Conference was held in Jacksonville, United States...

• Publication date : 2023/11/28

New EU funded project began on October 1st, 2021: “SophiA - Sustainable off-grid solutions for pharmacies and hospitals in Africa”

With a budget of 8 million euros over four years, SophiA will develop containerized solutions for hospitals using natural refrigerants, solar thermal and photovoltaics to enable more and more African people to...

• Publication date : 2021/10/21
• Subjects: Technology, Environment, HFCs alternatives, Developing country

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...

• Publication date : 2023/10/24

International events: HVAC

An IIR event, HVAC Energy Efficiency Best Practice Conference, was organized in Melbourne by AIRAH (Australian Institute of Refrigeration, Air Conditioning and Heating), on September 17-19, 2008. Various topics were covered: the rating of energy...

• Publication date : 2008/10/25

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...

• Last update : 2023/06/23
• Langues : French, English
• Themes : LNG and LPG

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...

• Last update : 2022/09/16
• Langues : French, English
• Themes : Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling)

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...

• Last update : 2022/06/22
• Langues : French, English
• Themes : Hydrocarbons, Containment, refrigerant charge reduction