USA: Researchers in the US claim to have made a breakthrough in achieving refrigeration-level cooling by using very small quantities of. As a result of climate change, population growth, and rising expectations regarding quality of life, energy requirements for cooling processes. The phenomenon of the magnetocaloric effect along with recent progress and the future needs in both the characterization and exploration of new magnetic.
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However, refrigerators produced according to this principle come at a price. Even in the best-case scenario, half of the coolant must be placed between the magnets. This means magnetic refrigeration you need four times as much permanent magnet as cooling medium.
In addition, the rare-earth metal is a critical raw material, and considerable amounts of it are needed.
The largest known deposits are in China, and its extraction causes considerable environmental pollution. Electromagnets cannot be used for magnetic cooling.
For physical reasons, the level of efficiency would be lower than with vapor compression, which is used in billions of refrigerators and air conditioners. However, the researchers are convinced that this cooling technology no longer has a future: The production licenses for most of them in Europe will magnetic refrigeration in the near future.
Propane or butane are effective coolants, magnetic refrigeration form highly explosive mixtures in contact with the air.
Keep cool: Researchers develop magnetic cooling cycle
Challenges Even though some products have come to market, there are still challenges that need to be addressed before there is large-scale deployment magnetic refrigeration the technology. The main issue is the supply of magnetocaloric materials, which are scarce. Reducing the material content, or identifying new materials, would increase viability.
A magnetic refrigeration system. Cooltech Applications According to magnetic refrigeration engineers Cooltech Applications, the fabrication process is not yet optimised and production costs are still high.
Interface optimisations for example, heat exchangers between the devices and the equipment to be refrigerated also need to be modified for maximum efficiency.
Finally, development of magnetic refrigeration for various specific applications needs to take place.
magnetic refrigeration Although there is a lot of academic work by scientists and engineers at universities and research institutions worldwide, the current market development is not fully mature.
Some of the companies pushing the boundaries of this technology include Cooltech Applications and Nextpac, which is working on heat-pump applications.
Meanwhile, Camfridge is involved in a large EU research project magnetic refrigeration magnetic refrigeration — visit elicit-project.
Magnetic refrigeration - Wikipedia
Magnetic refrigeration GeoThermag system showed the ability to produce cold water even at In addition, the system has shown the existence of an optimal frequency f AMR, 0. Observing the temperature of the cold water that was obtained in the tests, the GeoThermag system showed a good ability magnetic refrigeration feed the cooling radiant floors and a reduced capacity for feeding the fan coil systems.
History[ edit ] The magnetic refrigeration was discovered first observed by a German physicist Warburg  Subsequently by French physicist P. Weiss and Swiss physicist A.
It was first demonstrated experimentally by Giauque and his colleague D.