Search results

IIR document

Experimental and theoretical research on the electrical conductivity of a liquid desiccant for the liquid desiccant air-conditioning system: LiCl aqueous solution.

• Author(s) : WANG H., CHENG Q., FENG W., et al.
• Publication date: 2018/07
• Languages : English
• Keywords : Lithium chloride, Liquid desiccant, Air conditioner, Regeneration, Performance, Model, Electric conductivity
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 91
• Formats : PDF

Simulation of cooling enhancement in industrial low-voltage switchgear using validated coupled CFD-EMAG model.

• Author(s) : BEDKOWSKI M., SMOLKA J., BULINSKI Z., et al.
• Publication date: 2017/01
• Languages : English
• Keywords : Copper, Cooling, Modelling, Electric plant, Industry, Electric conductivity
• Source: International Journal of thermal Sciences - vol. 111

Characteristics of Graphite and MnO₂ Enhanced Cement-Based Thermoelectric Composite for Low-Temperature Applications.

• Author(s) : LIU X., QU M., NGUYEN A. P. T.
• Publication date: 2021/05/24
• Languages : English
• Keywords : Thermoelectricity, Thermoelectric cooling, Graphite, Composite, Nanoparticle, Manganese, Expérimentation, Thermal conductivity, Electric conductivity
• Source: 2021 Purdue Conferences. 6^th International High Performance Buildings Conference at Purdue.
• Formats : PDF

IIR document

Effect of temperature variation on cold electronics based LC oscillator for RRR measurement.

• Author(s) : KARUNANITHI R., SAGAR P., SINGH G. A.
• Publication date: 2017/05/15
• Languages : English
• Keywords : Superconduction, Sensor, Temperature variation, Testing, Electric conductivity
• Source: Cryogenics 2017. Proceedings of the 14^th IIR International Conference: Dresden, Germany, Mai 15-19, 2017.
• Formats : PDF

IIR document

A new method for online measurement of the concentration of working fluids in absorption refrigeration systems.

• Author(s) : JIANG J., HE G. G., LIU Y. L., et al.
• Publication date: 2017/06
• Languages : English
• Keywords : Working fluid, Measurement, Absorption system, Electric conductivity, Concentration
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 78
• Formats : PDF

IIR document

Experimental study on the surface tension density viscosity and conductivity of ionic liquid 1-ethyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide.

• Author(s) : HE L., HUANG Y., LI H., et al.
• Publication date: 2017/04/23
• Languages : English
• Keywords : Viscosity, Ionic liquid, Measurement, Density, Surface tension, Electric conductivity
• Source: 5^th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants.
• Formats : PDF

IIR document

Statistical optimization of hydrate formation conditions of TBAB and THF mixture as a cold storage material for air-conditioning system based on response surface methodology.

• Author(s) : MAHMOUDI B., NAEIJI P., VARAMINIAN F., et al.
• Publication date: 2016/09
• Languages : English
• Keywords : Training, Statistics, Subcooling, Optimization, Mixture, Hydrate, Electric conductivity, Air conditioning
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 69
• Formats : PDF

IIR document

High Tc superconducting bulk materials for the Lorentz force velocimetry in low conducting and slow flowing fluids.

• Author(s) : WEIDNER M., HALBEDEL B.
• Publication date: 2014/04/07
• Languages : English
• Keywords : Superconduction, Superconducting magnet, Critical temperature, High temperature superconductor, Electric conductivity
• Source: Cryogenics 2014. Proceedings of the 13^th IIR International Conference: Prague, Czech Republic, April 7-11, 2014.
• Formats : PDF

A Battery Thermal Management System Coupling High-Stable Phase Change Material Module with Internal Liquid Cooling.

• Author(s) : MO C., ZHANG G., YANG X., WU X., LI X.
• Publication date: 2022/08
• Languages : English
• Keywords : PCM, Liquid, Cooling, Battery, Thermal conductivity, Expérimentation, Electric vehicle, Ambient condition
• Source: Energies - 15 - 16
• Formats : PDF

Uncertainty analysis of a heavily instrumented building at different scales of simulation.

• Author(s) : OSTROUCHOV G., NEW J., SANYAL J., et al.
• Publication date: 2014/07/14
• Languages : English
• Keywords : Thermal property, Thermal conductivity, Gas, Energy consumption, Electricity, Building, Simulation, Parameter, Insulation
• Source: 2014 Purdue Conferences. 3rd International High Performance Buildings Conference at Purdue.
• Formats : PDF

An Experimental Study on Thermal Performance of Graphite-Based Phase-Change Materials for High-Power Batteries.

• Author(s) : KARIMI D., BEHI H., MIERLO J. van, BERECIBAR M.
• Publication date: 2022/04
• Languages : English
• Keywords : Electric vehicle, Battery, PCM, Thermal energy storage, Expérimentation, Test rig, Graphite, Thermal conductivity
• Source: Energies - 15 - 7
• Formats : PDF

IIR document

Performance comparison on different liquid desiccants in the liquid desiccant air-conditioning using electrodialysis regeneration: LiCl and LiBr aqueous solutions.

• Author(s) : CHENG Q., PEI W.
• Publication date: 2019/11
• Languages : English
• Keywords : Dehumidification, Comparison, Lithium chloride, Lithium bromide, Liquid desiccant, Regeneration, Performance, Expérimentation, Electric conductivity, Air conditioning
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 107
• Formats : PDF

A Comprehensive Review of Composite Phase Change Materials (cPCMs) for Thermal Management Applications, Including Manufacturing Processes, Performance, and Applications.

• Author(s) : RADOUANE N.
• Publication date: 2022/11
• Languages : English
• Keywords : PCM, Composite, Thermal conductivity, Energy storage, Review, Electronics, Electric vehicle, Thermal energy storage, Refrigerated transport
• Source: Energies - 15 - 21
• Formats : PDF

IIR document

Efficiency calculations for a superconducting transformer – an experimental investigation.

• Author(s) : ORCHUK S., CHANDRA S.
• Publication date: 2023/04/25
• Languages : English
• Source: Proceedings of the 17^th IIR International Conference on Cryogenics, Dresden, Germany, april 25-28 2023
• Formats : PDF

IIR document

Novel beverage heating and fast-cooling processes separately using an absorption chiller and using electric heat pumps.

• Author(s) : YANG Y., XIE X., JIANG Y.
• Publication date: 2018/10
• Languages : English
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 94
• Formats : PDF

High-temperature Superconductivity

Groundbreaking findings on high-temperature superconductivity. A superconductor is a material that can conduct electricity with virtually no resistance. The phenomenon was discovered by Kamerlingh Onnes in 1911 and takes place in certain metals...

• Publication date : 2007/05/04

100 years of superconductivity

April 8, 2011 marked the 100th anniversary of the discovery of superconductivity by Heike Kammerlingh Onnes. Working in his lab at Leiden University on April 8, 1911, he was experimenting with the electrical...

• Publication date : 2011/07/26

Ultracold polar molecules

Scientists at JILA, a joint institute of the National Institute of Standards and Technology (NIST) and the University of Colorado at Boulder (CU-Boulder), have applied their expertise in ultracold atoms and lasers to produce the first high-density...

• Publication date : 2008/10/22

Fermidable

In a team led by Wolfgang Ketterle, a nobel laureate, MIT (Massachusetts Institute of Technology) scientists have been the first to create "a new type of matter", a gas of atoms that shows high-temperature superfluidity. A superfluid gas can flow...

• Publication date : 2005/10/26

Superconductivity for aircrafts?

NASA recently published plans for the development of aircraft using superconductivity for a time frame around 2030. This could allow for noise reduction, improved carbon footprint and energy savings. The main advantage of HTS machines is that they...

• Publication date : 2010/03/07

Supercooling the LHC

CERN's Large Hadron Collider (LHC) is the new research instrument of the world's elementary particle physics community. This discovery-making machine will explore the structure of matter and basic forces of nature on a scale never attained before....

• Publication date : 2007/02/12

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

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

Impact of ageing on the energy efficiency of refrigerating household appliances

A recent study shows an average increase in energy consumption of 11% after 2 years of operation and 27% after 16 years for these appliances. Ageing wall insulation and door gasket contribute to this...

• Publication date : 2022/02/28

A possible major step in the quest of room-temperature superconductivity

Two researcher teams have just reported experiments indicating that a hydride of lanthanum compressed to 1.7 to 1.85 million bar has a critical temperature of 250–260 K (-23 – -13°C).

• Publication date : 2019/01/31

Easy-to-make doped thermoelectric materials

Thermoelectric materials, which can convert electric voltage into various temperature differences, ranging from hot to cold, and vice-versa, have been used in refrigerators for over 20 years, but these applications are still small and highly...

• Publication date : 2012/03/15

Recent overview of research on electrocaloric cooling

A recent literature review presents an overview of research on electrocaloric cooling. The authors addressed the following topics: thermodynamic cycles, electrocaloric materials, experimental devices, numerical...

• Publication date : 2021/01/04
• Subjects: Technology

Fish packaging with built-in nose

PhD candidate Jenneke Heising is working on packaging with a built-in nose that tells your smartphone how fresh fish is before you buy it.

• Publication date : 2013/12/27

Dielectric cooling for data centers

Until now, chips are mostly cooled thanks to air-cooling approaches: fans push air through heatsinks that sit on top of the chips to carry away excess heat. Liquid-cooling, which is more effective than air-cooling is more and more used....

• Publication date : 2018/01/18

A nanoelectronic chip cooled to the world record temperature of 2.8 mK

A group of researchers of the University of Basel succeeded in cooling a nanoelectronic chip to a temperature very close to absolute zero thanks to magnetic cooling.

• Publication date : 2018/03/22

News from IIR members: Air Liquide

The world's longest and most powerful superconductor power transmission cable has been connected to the commercial power grid in Holbrook, New York, United States, by the Long Island Power Authority (LIPA) and American Superconductor. The 600-m...

• Publication date : 2008/08/12

Cryogenics and Low-Temperature Physics: New Horizons and Challenges

This Focus written by Ralf Herzog*, President of the IIR’s Cryophysics, Cryoengineering commission (Commission A1) for the Newsletter of the IIR is the third in a series of presentations of the activities and hot research topics handled by the...

• Publication date : 2012/09/21

IIR Cryogenics Conference 2025: Call for abstracts to open in May!

Get ready to put pen to paper! The Programme Committee of the 18th IIR Conference on Cryogenics invites authors to submit their abstracts from May 25, 2024 – September 20, 2024.

• Publication date : 2024/03/21
• Subjects: Technology

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)

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

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