Search results

Adsorption and desorption isotherms of desiccants for dehumidification applications: silica aerogels and silica aerogel coatings on metal foams.

• Author(s) : NAWAZ K., SCHMIDT S. J., JACOBI A.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Silica gel, Dehumidification, Metal, Coating (materials), Adsorption, Foam, Desorption, Desiccant
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Performance simulation of multi-bed silica gel-water adsorption chillers.

• Author(s) : WANG X., HE Z., CHUA H. T.
• Publication date: 2015/04
• Languages : English
• Keywords : Silica gel, Chiller, Adsorption, Simulation, Performance
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 52
• Formats : PDF

Mass diffusion coefficient of desiccants for dehumidification applications: silica aerogels and silica aerogel coatings on metal foams.

• Author(s) : NAWAZ K., SCHMIDT S. J., JACOBI A. M.
• Publication date: 2014/07/14
• Languages : English
• Keywords : Silica, Dehumidification, Coating (materials), Adsorption, Performance, Mass, Humidity, Expérimentation, Desorption, Air conditioning, Diffusivity
• Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Experimental study on thermophysical and porous properties of silica gels.

• Author(s) : ISLAM M. A, PAL A., SAHA B. B.
• Publication date: 2020/02
• Languages : English
• Keywords : Heat capacity, Silica gel, Adsorption, Performance, Expérimentation
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 110
• Formats : PDF

IIR document

Kinetics of water freezing in mesopores of silica gel.

• Author(s) : KONIORCZYK M., BEDNARSKA D.
• Publication date: 2018/06/18
• Languages : English
• Keywords : Ice, Silica gel, Adsorption, Solidification, Modelling, Freezing, Water
• Source: 13^th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
• Formats : PDF

Adsorption and desorption of water on mesoporous silica for energy storage.

• Author(s) : MIKSIK F., MIYAZAKI T., KOYAMA S., et al.
• Publication date: 2017/08/07
• Languages : English
• Keywords : Silica, Adsorption, Energy storage, Expérimentation, Desorption, Water
• Source: International sorption heat pump conference, ISHPC 2017, Tokyo august 7-10.

IIR document

Characterization of silica gel-based composites for adsorption cooling applications.

• Author(s) : YOUNES M. M., EL-SHARKAWY I. I., KABEEL A. E., MIYAZAKI T., SAHA B. B.
• Publication date: 2020/10
• Languages : English
• Keywords : Adsorption system, Silica gel, Thermal conductivity, Expérimentation, Thermodynamic property, Modelling
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 118
• Formats : PDF

IIR document

Capillary condensation and evaporation of water in two-dimensional hexagonal mesoporous silica.

• Author(s) : HWANG J., SAKAMOTO K., YANAGIHARA H., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Silica, Capillarity, Adsorption, Expérimentation, Evaporation, Desorption, Condensation, Water
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Numerical analysis of a mesoporous silica-Gel (MS-Gel) dehumidifier.

• Author(s) : HSU W. L., SHAMIM J. A., DAIGUJI H.
• Publication date: 2017/08/07
• Languages : English
• Keywords : Silica gel, Mass transfer, Heat transfer, Adsorption, Porous medium, Expérimentation, Dehumidifier
• Source: International sorption heat pump conference, ISHPC 2017, Tokyo august 7-10.

Water adsorption of CaCl2 confined in mesoporous silica gel with various pore sizes.

• Author(s) : MCCAGUE C., FAYAZMANESH K., KALRA M., et al.
• Publication date: 2014/03/02
• Languages : English
• Keywords : Silica gel, Adsorption, Porous medium, Water, Calcium chloride
• Source: International sorption heat pump conference (ISHPC2014), College Park, United States, March 31-April 2, 2014.
• Formats : PDF

IIR document

Transfer processes in the thermosyphon employing graphene oxide and silica nanofluids.

• Author(s) : WLAZLAK A., ZAJACZKOWSKI B., KROLICKI Z., et al.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Oxide, Silica, Measurement, Thermosyphon, Nanoparticle, Nanofluid, High temperature, Expérimentation, Boiling
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

IIR document

Effect of acoustic wave on enhancement of moisture adsorption rate of silica-gel.

• Author(s) : OKUBO K., MATSUDA S., UEDA Y., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Silica gel, Enhancement, Adsorption, Wave, Humidity, Expérimentation, Acoustics
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Comparison of electro-osmotic regeneration between zeolite and macroporous silica gel desiccants.

• Author(s) : ZHANG G., TIAN C., SHAO S.
• Publication date: 2014/03/02
• Languages : English
• Keywords : Osmosis, Silica gel, Regeneration, Adsorption, Zeolite, Performance, Humidity, Expérimentation, Desiccant
• Source: International sorption heat pump conference (ISHPC2014), College Park, United States, March 31-April 2, 2014.
• Formats : PDF

IIR document

Revisiting the adsorption equilibrium equations of silica-gel/water for adsorption cooling applications.

• Author(s) : MOHAMMED R. H., MESALHY O., ELSAYED M. L., et al.
• Publication date: 2018/02
• Languages : English
• Keywords : Silica gel, Equilibrium, Capillary, Adsorption system, Expérimentation, Condensation, Water
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 86
• Formats : PDF

An approach for quantitative analysis of pore size distribution of silica gel using atomic force microscopy.

• Author(s) : PALASH M. L., MITRA S., HARISH S., et al.
• Publication date: 2017/08/07
• Languages : English
• Keywords : Porous surface, Silica gel, Adsorbent, Adsorption, Expérimentation
• Source: International sorption heat pump conference, ISHPC 2017, Tokyo august 7-10.

Crystalline silicon solar cells efficiency

A study published in Nature Energy indicates that solar cell technology continues to develop and may rival energy produced by fossil fuels.

• Publication date : 2017/08/07

US: intensification of research on refrigerant flammability

AHRI has set up a subcommittee to conduct a review of the safety issues around mildly flammable refrigerants.

• Publication date : 2015/08/18

LNG, a pillar of EU gas supply diversification

Given the geopolitical context, the EU has presented a plan to phase out its dependence on fossil fuels from Russia well before 2030 and, in particular, to reduce its imports of Russian gas by two thirds by the...

• Publication date : 2022/03/29

Publication of an update on new refrigerants designations and safety classifications.

UN Environment and ASHRAE recently published a fact sheet to provide an update on ASHRAE Standards 34, which lists the designations of refrigerants.

• Publication date : 2017/03/17
• Subjects: Regulation, HFCs alternatives

Vaccines: a step towards thermostability

Ensilication of the protein molecules of a vaccine against tuberculosis prevents its deterioration by heat.

• Publication date : 2019/10/30
• Subjects: Developing country

Energy savings: Japan: significant improvement of the energy efficiency of refrigerators

According to JARN, the energy efficiency of refrigerators in Japan has been continuously improved: their power consumption has been reduced to 1/5th of that 10 years ago. This is in part due to the development of vacuum heat insulators, which are...

• Publication date : 2005/07/19

World desiccant wheel market.

A few figures to illustrate the desiccant wheel market.

• Publication date : 2017/01/31

Sorption chillers

Sorption chiller technology is rapidly developing, especially that using solar energy. - As highlighted by Jacob and Kohlenbach* during the latest IIR Gustav Lorentzen Conference on Natural Working Fluids in Sydney, in Europe, numerous new...

• Publication date : 2011/02/07

THRIVE project explores new developments for adsorbtion heat pumps

Launched in 2014, the four-year project THRIVE was funded by the Swiss National Science Foundation (SNSF) to investigate adsorption heat pumps and to develop a system powered by waste heat.

• Publication date : 2018/11/30

Vacuum Insulation Panels: a promising solution for domestic refrigerators

Thanks to their low thermal conductivity, Vacuum Insulation Panels (VIPs) make it possible to greatly reduce the energy consumption of domestic refrigerators. However, their adoption comes up against problems of...

• Publication date : 2020/05/27

ICR2011 highlights: improving insulation thanks to vacuum

Vacuum insulated panels (VIPs) are a new technology which is theoretically 5 times less conductive than classic polyurethane panels (3 times less in practice because of the various thermal bridges).

• Publication date : 2012/01/05

Nano-material could improve adsorption technology

A nano-material could drastically improve adsorption cooling, thanks to its high adsorbing properties. The material, engineered by Pacific Northwest National Laboratory (PNLL), USA, was created using nanoscopic structures, that self-assemble into...

• Publication date : 2011/08/16

Improving adsorption cooling thanks to MOFs

Metal-organic framework (MOF) compounds are porous crystalline materials composed of metal ions or metal clusters bridged by organic linking groups; they have outstanding adsorption properties, allowing for better efficiency and use on a larger...

• Publication date : 2015/02/20

The benefits of 3D printing in refrigeration and air conditioning

The various applications of 3D printing in the field of refrigeration and air conditioning highlight possible tremendous advantages in terms of energy efficiency and cost minimisation.

• Publication date : 2020/05/27
• Subjects: Technology

Sub-Saharan milk cooler project awarded USD 1 million

A University of Georgia engineer received USD 1 million to continue working on a milk cooler designed to help dairy farmers, particularly those in sub-Saharan Africa, who lack access to refrigeration.

• Publication date : 2014/03/18

Discover the 36th IIR Informatory Note on “Flammable Refrigerants”

The 36th IIR Informatory Note on “Flammable Refrigerants” provides a comprehensive introduction to matters such as flammability characteristics, classifications and governing rules such as safety standards and regulations covering the entire...

• Publication date : 2018/02/07

A new version of the ATP Agreement

The new version on the international carriage of perishable foodstuffs and on the special equipment to be used for such carriage became effective from 30 September 2015. The IIR was involved in this process thanks to its Commission D2...

• Publication date : 2015/10/20

New IIR conference on the application of HFO Refrigerants

From September 2 to 5, 2018 in Birmingham (UK), the Institute of Refrigeration (IOR) will host the inaugural IIR International Conference on the application of HFO Refrigerants.

• Publication date : 2017/09/05

The IIR makes its mark in LNG

In line with our objective to remain at the forefront of developments in the field of cryogenics the IIR, in partnership with the lnternational Gas Union (IGU), and the Gas Technology Institute (GTI), organizes triennial LNG conferences across the...

• Publication date : 2015/10/14

New IIR Informatory Note: “Whole Body Cryotherapy/Cryostimulation”

Learn about the latest advances and the challenges related to these rapidly developing techniques.

• Publication date : 2020/10/22

Two IIR Informatory Notes on hot topics

The IIR has recently published two Informatory Notes on high-stakes subjects: flammable refrigerants and the Internet of Things and Artificial Intelligence in refrigeration and air...

• Publication date : 2023/09/22
• Subjects: Technology, HFCs alternatives

Focus on the last events in June 2021

In June 2021, the IIR organised two conferences: Thermag and HFO. It also participated in the European Conferences on the latest technologies in refrigeration and air conditioning organised by Centro Studi...

• Publication date : 2021/06/29

LNG fundamentals explained in the Encyclopedia of refrigeration

The latest entry in the IIR’s online Encyclopedia of refrigeration is a thematic file presenting LNG production processes, and cold energy recovery applications.

• Publication date : 2022/07/08
• Subjects: Technology

Past events: The IIR around the world

Focus on ammonia, cryogenics and heat pumps! Take a look back at the most recent events in which the IIR has participated. 

• Publication date : 2023/05/27

IIR website: consult our courses!

The “Services and expertises” section of the IIR website includes a section on courses and training. The courses are among the most downloaded documents in 2022! 

• Publication date : 2023/02/17
• Subjects: General information

The IIR is taking part in standardization work for TTIIs in France

Gérald Cavalier, President of Section D of the IIR’s Science and Technology Council was appointed President of the new E18A Commission of AFNOR (Association Française de Normalisation, the French Standardization Agency): “Cold chain control -...

• Publication date : 2012/08/22

The IIR is seeking an Information Officer

The IIR is seeking an Information Officer for its Scientific and Technical Information Department comprising 4 persons. The position is available immediately.

• Publication date : 2013/03/05

Obituary: Rui Telmo Nobre

Mr Rui Telmo Nobre was the chairman of the UNECE Working Party on Transport of Perishable Foodstuffs and involved in the work of the IIR CERTE Sub-Commission.

• Publication date : 2020/02/06

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 : French, English
• Themes : LNG and LPG

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 : French, English
• Themes : Evaporators, condensers and other heat exchangers

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...

• Last update : 2023/09/15
• Langues : French, English
• Themes : HFCs

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...

• Last update : 2023/06/30
• Langues : French, English
• Themes : Ice creams