Search results

Optical refrigeration on CdSe/CdS quantum dots.

• Author(s) : HUA M.
• Publication date: 2019/12
• Languages : English
• Keywords : Optical refrigeration, Calculation, Thermodynamics, Modelling, Expérimentation, Chemical reaction, Laser, Spectroscopy, Light
• Formats : PDF

IIR document

Online composition measurements of refrigerant mixtures by optical fibres and infrared spectroscopy.

• Author(s) : TOBALY P., TERRIER M. F.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Infrared, R744, R290, Spectroscopy, Propane, Prediction, Mixture, Optical fibre, Expérimentation, Refrigerant, CO2
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

IIR document

Spectroscopy and laser-induced cooling characteristics of 4%Yb³⁺: YAG crystals

• Author(s) : ZHANG J., XU J., ZHANG Z., WANG C., ZHONG B.
• Publication date: 2024/08/24
• Languages : English
• Keywords : Spectroscopy, Laser, Crystal, Performance, Thermal property, Fluorescence, Measurement, Expérimentation, Optical refrigeration
• Source: 10^th IIR Conference on Caloric Cooling and Applications of Caloric Materials
• Formats : PDF

IIR document

Experimental investigation of in-tube condensation of low GWP refrigerant R450A using a fiber optic distributed temperature sensor.

• Author(s) : JACOB T. A., MATTY E. P., FRONK B. M.
• Publication date: 2019/07
• Languages : English
• Keywords : Sensor, Low GWP, R450A, Zeotropic mixture, Optical fibre, Expérimentation, Condensation, Pressure drop
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 103
• Formats : PDF

Laser Cooling and Trapping of Rare-Earth-Doped Particles.

• Author(s) : NEMOVA G.
• Publication date: 2022/04
• Languages : English
• Source: Applied Sciences - vol. 12 - n. 8
• Formats : PDF

Recommended by the IIR

Comparison of low-cost detection methods for liquid refrigerant flow at compressor inlet.

• Author(s) : LANGEBACH R., ANDJELKOVIC M., PFLIEHINGER T., PAL F. J.
• Publication date: 2022/07/15
• Languages : English
• Keywords : Reciprocating compressor, Test rig, Vibration, Imaging, Detection, Refrigerant, Liquid
• Source: 2022 Purdue Conferences. 26^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

A novel measurement system for dense foam using a single-tip optical fiber probe.

• Author(s) : NIHEI A., MIZUSHIMA Y., SAITO T.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Measurement, Probe, Simulation, Foam, Optical fibre
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Design of a refrigeration machine with accurate inline refrigerant-oil property measurements for operation optimization.

• Author(s) : CIKMAZ C., YANG X., OLTERSDORF T., URBANECK T., RICHTER M.
• Publication date: 2023/08/21
• Languages : English
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

Online, non-intrusive composition measurements of circulating CO2 based mixtures in an experimental heat pump by means of infra-red spectroscopy.

• Author(s) : BOUTEILLER P., TERRIER M. F., BARBA-GARRANCHO M. I., et al.
• Publication date: 2016/07/11
• Languages : English
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Analysis and optimization of the absorber of a diffusion absorption chiller.

• Author(s) : BRUNDER J., STERGIAROPOULOS K.
• Publication date: 2022/06/13
• Languages : English
• Source: 15^th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15^th 2022.
• Formats : PDF

Experimental Study on P-V diagram and motion curve of suction and discharge valve of reciprocating compressor.

• Author(s) : HUANG G., SHEN X., YAN Z.
• Publication date: 2018/07/09
• Languages : English
• Source: 2018 Purdue Conferences. 24^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

Vapor-liquid equilibrium measurements of HFO refrigerant mixtures.

• Author(s) : SAKODA N., SHIHENG J., KOHNO M., et al.
• Publication date: 2017/04/23
• Languages : English
• Keywords : R1234yf, Equilibrium, Measurement, Liquid-vapour, Mixture, HFO, Refrigerant
• Source: 5^th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants.
• Formats : PDF

IIR document

Experimental study of self-acting reed valves.

• Author(s) : MÖHL C., THOMAS C., HESSE U.
• Publication date: 2017/09/06
• Languages : English
• Source: Compressors 2017: 9^th International Conference on Compressors and Coolants.
• Formats : PDF

IIR document

Thermal cooling multichip ultra high power LED using refrigeration cycle system.

• Author(s) : HSU C. N., WANG W. C.
• Publication date: 2015/08/16
• Languages : English
• Keywords : R407C, R134a, Light, Expérimentation, Refrigerant, Diode
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Viscosity and mass diffusion coefficient of ammonia/ethylammonium nitrate mixtures.

• Author(s) : RIVES R., SALAVERA D., CORONAS A.
• Publication date: 2021/09/01
• Languages : English
• Source: 6^th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
• Formats : PDF

Optical cavity cooling: a quantic leap for optical refrigeration?

A team of researchers at the Niels Bohr Institute have combined laser cooling technology with nano-physics, and have discovered a revolutionary way of bringing a semi-conductor nano-membrane’s temperature down to -269°C.

• Publication date : 2012/07/31

Optical refrigeration

A team in New Mexico University has created the first-ever optical cryocooler that could be applied to airborne and spaceborne sensors. It uses optical refrigeration which could enable miniaturization, an alternative to bulky mechanical...

• Publication date : 2010/05/27

Nanotechnoly: what’s new?

Nanotechnology - the manipulation of cell and atomic structure in materials no larger than a billionth of a metre in size - has recently been described by Frank O'Brien-Bernini, Vice President of Owens Corning Science & Technology Center, as...

• Publication date : 2006/07/26

Frost detection and defrosting methods: latest advances

A recent Purdue conference paper presents the state of the art regarding methods for retarding the onset of frosting, frost detection techniques and defrosting strategies, including those based on artificial...

• Publication date : 2023/02/21

Coldest ever molecules

Physicists at Yale University claim to have achieved the coldest ever molecules through direct cooling.

• Publication date : 2014/10/01

Radiative cooling: protecting ice from melting under sunlight

Researchers have developed a biodegradable film made of cellulose acetate which, thanks to its radiative cooling properties, effectively protects ice subjected to solar radiation from melting, with possible...

• Publication date : 2022/03/30

Applications of Artificial Intelligence to refrigeration systems

AI techniques, which are currently very topical, are the subject of intense research and development. Overview of their applications and benefits in the refrigeration sector, based on the latest articles...

• Publication date : 2023/04/26
• Subjects: Technology

The benefits of linear compressors

Three articles published recently in the IJR illustrate the strength of R&D work around linear compressors and highlight the benefits of these, especially in commercial and domestic...

• Publication date : 2020/02/27

A must-read in the IJR: a review of storage temperatures for biological material

To improve storage efficiency, the authors of a review article take stock of storage temperatures for biological material (cells, proteins, DNA, etc).

• Publication date : 2024/04/26
• Subjects: Technology

An ejector refrigeration system optimised for sub-zero temperatures on fishing vessels

Large amounts of diesel fuel are used to power fishing vessels engines and on-board refrigeration systems. In a recent theoretical study, an energy-efficient sub-zero refrigeration system proposed based on a...

• Publication date : 2021/05/31
• Subjects: Technology

Member news: Star Refrigeration continues to develop Azanefreezer’s production for cold stores

Azanefreezer, an ammonia system, has just been installed in a cold store near Peterborough, UK.

• Publication date : 2019/11/29

Solar ejector refrigeration systems: benefits and latest developments

Two IJR articles present the latest advancements in this technology and in particular the advantages of variable geometry ejectors and low-GWP refrigerants in terms of performance.

• Publication date : 2020/06/26
• Subjects: Developing country

IIR member news: Star Refrigeration chooses CO2 to cool down a beer warehouse

Star Refrigeration, collective member of the IIR, recently published a case study about a CO2 solution used to cool down a beer warehouse.

• Publication date : 2019/06/28

Ice storage

Ice storage is not only beneficial in economic terms, it is also energy-saving, noise-free and helps extend the life of the systems. It consists in keeping a certain amount of ice, as a way of storing "cold", in order to use it later. It was...

• Publication date : 2007/08/05

Overview of data center cooling technologies

The very huge growth in Internet traffic requires the continued development of new energy-efficient data center cooling technologies, based primarily on liquid...

• Publication date : 2022/12/15
• Subjects: Technology

Member news: Carrier Transicold's innovative electrical technologies for refrigerated transport

Carrier Transicold promotes a new all-electric and autonomous cooling system for semi-trailers that completes its 100% electric range. 

• Publication date : 2021/03/29

Supercooling and superchilling: A solution to increased shelf life and reduced food waste?

If these technologies were combined with perfusion chilling for meat and fish, then additional benefits such as rapid cooling, low weight loss and novel products could result.

• Publication date : 2015/10/27

Editorial by Didier Coulomb

The International Institute of Refrigeration, along with several national refrigeration associations, was founded in 1908. 2008 will thus be the IIR's centenary and will be called "Year of Refrigeration". 2008 will mark an important milestone in...

• Publication date : 2008/02/12

New IIR Informatory Note on Refrigerant Charge Reduction

Now available for IIR members! The 25th IIR Informatory Note, the latest in the series on Refrigeration Technologies.

• Publication date : 2014/05/28

New in our Encyclopedia: cryogenics in the pharmaceutical industry

This summary document presents the potential applications of liquid cryogens in the pharmaceutical sector. 

• Publication date : 2022/12/15
• Subjects: Technology

Celebrating Refrigeration Ceremony 2021

Organised under the initiative of the French Association of Refrigeration (AFF), the third French New Year ceremony to celebrate refrigeration, Les Vœux du Froid, took place on January 21.

• Publication date : 2021/01/27

Member news: latest innovations from Mirai Intex

The company Mirai Intex has just marketed a refrigeration machine using air cycle for low temperatures. Mirai Intex also markets a mobile storage solution. 

• Publication date : 2022/03/29

Invitation: IIR Seminar on the "Logistics For Transport Of Foodstuffs Under Controlled Temperatures In Hot Countries"

The IIR is delighted to invite you to the IIR Seminar on the "Logistics For Transport Of Foodstuffs Under Controlled Temperatures In Hot Countries” and an IIR Working Group meeting on The Cold Chain in Hot Countries.

• Publication date : 2016/09/21

IIR Seminar in Tunis brings to the forefront the social and economic strategic importance of the cold chain

Recognising the social and economic importance of this issue on a global scale, the IIR organised a seminar on the Logistics For Transport Of Foodstuffs Under Controlled Temperatures In Hot Countries on October 25, 2016 in Tunis (Tunisia),...

• Publication date : 2016/12/14

Cold storage conditions for fruits and vegetables

Practical recommendations for the cold storage of over 200 cultivars of fruits, vegetables and herbs (storage temperatures, relative humidity, storage time, controlled atmosphere...

• Last update : 2023/01/16
• Langues : French, English
• Themes : Fruit, Vegetables

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 : French, English
• Themes : Freezing of foodstuffs

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