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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

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

Heat transfer coefficient distribution—a review of calculation methods.

• Author(s) : DUDA P.
• Publication date: 2023/05
• Languages : English
• Keywords : Heat transfer coefficient, Heat transfer, Mass transfer, CFD, Calculation, Distribution, Review
• Source: Energies - vol. 16 - n. 9
• Formats : PDF

IIR document

Experimental study of heat and mass transfer characteristics in a cross-flow heating tower.

• Author(s) : HUANG S., LV Z.
• Publication date: 2017/05
• Languages : English
• Keywords : Heat capacity, Mass transfer, Heat transfer, Heat pump, Expérimentation, Energy efficiency, Heating
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 77
• Formats : PDF

IIR document

Lumped heat and mass transfer model of the frost formation process.

• Author(s) : MOHS W. F., KULACKI F. A.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Frosting, Calculation, Mass transfer, Heat transfer, Model, Sensible heat, Latent heat
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Heat transfer and flow characteristics of a conical coil heat exchanger.

• Author(s) : SHEEBA A., AKHIL R., PRAKASH J.
• Publication date: 2020/02
• Languages : English
• Keywords : Heat transfer coefficient, Heat exchanger, Heat transfer, Expérimentation, Nusselt, Coil
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 110
• 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

On the heat transfer coefficients between heated/cooled radiant ceiling and room.

• Author(s) : CHOLEWA T., ANASIEWICZ R., SIUTA-OLCHA A., et al.
• Publication date: 2017/05/05
• Languages : English
• Keywords : Radiation, Heat transfer coefficient, Design, Cooling, Ceiling, Expérimentation, Heating
• Source: Applied Thermal Engineering - vol. 117

IIR document

Heat transfer in small air compressor.

• Author(s) : TUHOVCAK J., HEJCIK J., JICHA M.
• Publication date: 2017/09/06
• Languages : English
• Keywords : Heat transfer, Efficiency, Thermodynamic property, Modelling, Heat flux, Reciprocating compressor
• Source: Compressors 2017: 9^th International Conference on Compressors and Coolants.
• Formats : PDF

IIR document

Heat transfer performance of pulsating heat pipe with water-ethanol mixed working fluid.

• Author(s) : SUI Y., CUI X. Y., HAN H.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Pulsation, Heat pipe, Heat, Heat transfer, Performance, Expérimentation, Ethanol, Water
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Heat and mass transfer to air in a cross flow heat exchanger with surface deluge cooling.

• Author(s) : DIANI A., DALL'OLIO R., DE ZEN D., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Mass transfer, Heat transfer, Expérimentation, Crossflow, Heat exchanger, Water
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Membrane-type total heat exchanger performance with heat and moisture transferring in different directions across membranes.

• Author(s) : MIN J., DUAN J.
• Publication date: 2015/12/05
• Languages : English
• Keywords : Mass transfer, Heat transfer, Air-air, Performance, Membrane, Heat exchanger
• Source: Applied Thermal Engineering - vol. 91

Pool boiling heat transfer enhancement with copper nanowire arrays.

• Author(s) : SHI B., WANG Y. B., CHEN K.
• Publication date: 2015/01
• Languages : English
• Keywords : Pool boiling, Copper, Heat transfer, Performance, Heat flux, Expérimentation
• Source: Applied Thermal Engineering - vol. 75

A modified effectiveness-based approach in performance prediction of simultaneous heat and mass transfer in heat pump operating conditions.

• Author(s) : DU R., AN J., HUANG L.
• Publication date: 2023/05
• Languages : English
• Keywords : Heat transfer, Mass transfer, Model, Review, Modelling
• Source: 14^th IEA Heat Pump Conference 2023, Chicago, Illinois.
• Formats : PDF

Electrode arrangement impact on heat transfer in horizontal channels.

• Author(s) : GANNOUN R., ELKAHZEN M. I., HASSEN W., et al.
• Publication date: 2016/03/24
• Languages : English
• Keywords : Connection, Channel, Heat transfer, Simulation, Flow
• Source: 1st International Refrigeration, Energy and Environment Colloquium. Proceedings: Hammamet, Tunisia, March 24-27, 2016.
• Formats : PDF

A promising future for nanorefrigerants

A review article published in the IJR highlights the remarkable heat transfer properties of nanorefrigerants, which are leading to significant improvements in the performance of refrigeration systems.

• Publication date : 2018/05/17

Neutrons provide first images of refrigerant flow

Researchers at DOE’s Oak Ridge National Laboratory have captured undistorted snapshots of refrigerants flowing through small heat exchangers, helping to further elucidate characteristics of heat transfer.

• Publication date : 2015/05/28

Novel anti-frosting heat pump technology

A review article published in Energies, presents advancements of heat-source tower heat pump systems (HSTHPSs) in China, including operating principle, heat-source tower (HST) structure, heat and mass transfer...

• Publication date : 2025/02/12
• Subjects: Technology

Shape memory alloys: cooling with metal muscles

Researchers from the University of Saarland (Germany) are constructing an optimized prototype for an air-cooling system in which heat and cold are transferred using “muscles” made from a nickel-titanium alloy thanks to the elastocaloric effect.

• Publication date : 2016/08/19

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...

• Publication date : 2025/02/19
• Subjects: Technology

CHEs in heat pumps

In its Annex 33, "Compact Heat Exchangers in Heat Pumping Equipment" issued in September 2010, the Heat Pump Programme details the benefits of using compact heat exchangers (CHEs): . Improved heat exchanger thermal effectiveness: thermal...

• Publication date : 2011/02/07

Quantum refrigerators: research is making progress

Two recent studies illustrate the progress of research on quantum refrigerators. Cooling applications for microelectronic compounds could be considered.

• Publication date : 2019/02/28

Heat flowing from a colder to a warmer body without external intervention

Researchers at the University of Zurich have developed a simple device that allows heat to flow temporarily from a cold to a warm object without external intervention by using a “thermal inductor”.

• Publication date : 2019/05/29

A new efficient and portable electrocaloric cooling device

Researchers with the University of California and SRI International describe a new electrocaloric cooling device and its possible applications.

• Publication date : 2018/05/14

Brief: Protrait of an optimal system

With looming commitments under the Kyoto Protocol, energy efficiency in buildings, including in art galleries, is essential. Paintings not only require an aesthetic environment, but one in which the air temperature and humidity is controlled. The...

• Publication date : 2006/05/05

Save 2002 project: "European Certified Heat Pump Installer"

The project proposal was prepared by European Heat Pump Association and was approved by the European Commission in December 2003. It develops a common European strategy, as many European countries have already started initiatives at different...

• Publication date : 2004/07/15

Green buildings

Moscow City Tower is to be Europe's tallest and the world's second tallest building. The 600-m naturally ventilated tower designed by Norman Foster will accommodate 25 000 people - a city unto itself - and the designer is aiming for LEED gold...

• Publication date : 2008/08/12

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...

• Publication date : 2021/03/29
• Subjects: Technology

Chillers: efficiency takes off

Chillers are key refrigerating systems since, according to the Department of Energy, in the US, they account for about 13% of the power consumed by the nation's buildings and 9% of the overall demand for electric power. Examples below illustrate...

• Publication date : 2008/10/25

Nanotechnology: the future of heat exchangers?

The US Department of Energy has awarded contracts to improve energy efficiency. One such contract, awarded to TIAX, a technology development company, through the Small Business Innovation Research (SBIR) programme, shall be used to develop a...

• Publication date : 2006/01/24

TPTPR2025 – the IIR’s conference on refrigerant research: Conference highlights and proceedings now available on FRIDOC

The 7th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants (TPTPR2025) convened leading researchers to present the latest findings on low-GWP refrigerants and advanced...

• Publication date : 2025/08/21
• Subjects: Technology

News from IIR members: Alfa Laval wins € 6 million energy efficiency order in Kazakhstan

Alfa Laval – a world leader in heat transfer, centrifugal separation and fluid handling – recently won an order to supply Alfa Laval Packinox heat exchangers to a refinery in Kazakhstan.

• Publication date : 2011/12/14

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.

• Publication date : 2017/01/20

Activities of IIR’s Commission B1 on “Thermodynamics and Transfer Processes”

Thermodynamics is essential for all topics covered by the IIR.

• Publication date : 2017/02/23

Conference update: Sydney

The 9th IIR Gustav Lorentzen Conference Natural Working Fluids will be held in Sydney, Australia, on April 12-14, 2010. The call for papers and first announcement are now available:

• Publication date : 2009/05/18

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...

• Publication date : 2011/08/30

New IIR publications: Properties of Secondary Working Fluids for Indirect Systems

This expanded 2nd edition responds to rising use of secondary refrigerant systems used in many applications. It comprises comprehensive data on a number of aqueous solutions of ethylene and propylene glycol, ethanol, glycerol, ammonia, chlorides...

• Publication date : 2010/05/27

International events: Antony

The 1st IIR Workshop on Refrigerant Charge Reduction in Refrigerating Systems was held in Antony, France, on April 6-7, 2009. Besides charge reduction, key topics covered included enhancement of heat and mass transfer, pressure and oil issues and...

• Publication date : 2009/05/18

Briefs: Eddie Leonardi

The IIR was deeply saddened to learn of the death of Prof. Eddie Leonardi in December 2008. Eddie was Professor of Mechanical Engineering at the University of New South Wales, Australia, and taught refrigeration, air conditioning, thermodynamics,...

• Publication date : 2009/02/24

ICR2007 in Beijing

The International Institute of Refrigeration (IIR) holds Congresses every 4 years. They have two objectives: - a scientific objective: apart from the numerous IIR and IIR-co-sponsored conferences (about 50 over a 4-year period), which are focused...

• Publication date : 2007/11/20

Here are the latest IIR award-winners!

Once every 4 years during each International Congress of Refrigeration, the IIR presents a series of prestigious scientific awards:. Gustav Lorentzen Medal: the prize is awarded to a person with...

• Publication date : 2011/09/15

New publications: The CD-ROM proceedings of the Vicenza IIR Conferences

The CD-ROM proceedings of the Vicenza IIR Conferences on 1) Commercial Refrigeration and 2) Thermophysical Properties and Transfer Processes of Refrigerants are on sale. They comprise 134 papers. Main topics: 1) display cabinets, energy simulation...

• Publication date : 2006/01/28

IIR Working Party on Refrigerant Charge Reduction in Refrigerating Systems: Join Us!

Suitable design of refrigerating systems has several benefits in terms of limitation of the environmental impact thanks to a reduction in the energy consumption and the limitation of refrigerant emissions. The direct greenhouse effect accounts for...

• Publication date : 2008/10/25

Conference reports

Several IIR-co-sponsored events took place at the end of 2010: - The Pôle Cristal Symposium held in Dinan, France, on October 7-8, 2010 attracted 220 attendees. Sixteen papers were presented. - The International Congress...

• Publication date : 2011/02/07

Upcoming IIR Conference: Dinan (2006)

A call for papers has been launched for the 7th Conference on Phase-Change Materials and Slurries, September 13-15, 2006 in Dinan, France. Themes: thermophysical properties of PCMs and Slurries: measurements and identification; transport phenomena...

• Publication date : 2006/05/05

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...

• Last update : 2022/09/07
• Langues : English, French
• Themes : Evaporators, condensers and other heat exchangers

Nanorefrigerants

Nanorefrigerants are created by adding nanoparticles in suspension to a base refrigerant. They have a thermal conductivity that is 15% to 104% higher than that of the corresponding...

• Last update : 2022/06/17
• Langues : English, French
• Themes : Nanofluids

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 : English, French
• 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 : English, French
• Themes : Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling)

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...

• Last update : 2023/11/07
• Langues : English, French
• Themes : Freezing of foodstuffs