Fridges of the future will be to work on magnets

Main Articles Fridges of the future will be to work on magnets

Different pace of progress in the field of household appliances: TVs are improving every month, but the design of such important devices like refrigerator fundamentally unchanged for many years. Recently, scientists from the Massachusetts Institute of technology (MIT) have developed a model of the refrigerator of the future, which cools and freezes our products are not based on the usual units refrigerant, and with the help of a magnet. These refrigerators can become much easier to use, more energy efficient and more compact.

Different pace of progress in the field of household appliances: TVs are improving every month, but the design of such important devices like refrigerator fundamentally unchanged for many years. Recently, scientists from the Massachusetts Institute of technology (MIT) have developed a model of the refrigerator of the future, which cools and freezes our products are not based on the usual units refrigerant, and with the help of a magnet. These refrigerators can become much easier to use, more energy efficient and more compact.

the Idea of a magnetic refrigerator is based on the movement of magnons of quasi - particles in the magnet, which can, moving from one end of the magnet to the other, to heat and thereby create a cooling effect.

Magnons in many respects similar to the electrons, which can simultaneously conduct an electrical charge and heat transfer. The electrons depend on the electric field or temperature gradient is known as the thermoelectric effect. In recent years, scientists have studied this effect for the development of thermoelectric generators that can be used to convert heat into electricity or to generate cooling without any moving parts.

Bolin Liao, graduate student at MIT, who led the research with support from the U.S. Department of energy and research division of the air force, explained that the refrigerator is equipped with such a generator without moving parts, tubes and refrigerant that will likely increase the lifespan and reduce its noise and power consumption to a minimum.

as well as electrons, magnons move in response to two forces: the temperature gradient or magnetic field. However Liao found that at moderate magnetic field effect was small, and at cryogenic temperatures is significantly increased.

Scientists believe that the properties of magnons can be used to improve existing thermoelectric generators.

" of Course, thermoelectricity have a long way to go to fully compete with traditional technologies, but a deep study of the properties of magnets can help to improve existing systems and to improve thermoelectric efficiency, " says Bolin Liao.

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