Without Freon: Russian scientists have developed a “magnetic” refrigerator

A new development by Russian scientists will create a refrigerator in which toxic freon will not be used. The idea belongs to the staff of SPbPU, Moscow State University. M.V. Lomonosov and IMET RAS. The device will fulfill its function due to the influence of a magnetic field on an alloy of rare-earth metals. According to scientists, later similar technology It can be used both in space and in everyday life.




The essence of the work of the “magnetic” refrigerator is as follows: under the influence of a magnetic field on the resulting alloy, the crystal lattice of the latter changes. The process is accompanied by the absorption or release of heat. It all depends on which magnetic field is applied and in which direction.

While searching for a “replacement” for freon, scientists produced a series of alloys including: gadolinium, terbium, dysprosium, holmium and cobalt. Given the fact that the above components are quite expensive, aluminum was introduced into the alloy composition to reduce costs, while maintaining the properties of the final material.

The working prototype of the “magnetic” refrigerator proposed by scientists provides for a rotating design. The latter consists of a wheel with cells that are filled with powder from the aforementioned alloy, and a permanent magnet. When the substance passes through the working gap, where the magnetic field is concentrated, heat will be released, which is removed by a water-cooled heat exchanger. And when the alloy leaves the field zone, the opposite magnetocaloric effect will occur. In this case, the substance will release cold, lowering the temperature of the heat exchanger with the circulating second stream of water, and thereby provide cooling of the chamber.

Now, Russian scientists have to conduct numerous tests and confirm the level of operational reliability of the new technology. It is worth noting that work on the creation of such devices is also carried out in research centers: USA, Japan, Italy, Germany and France.
  • Used photos: http://blogspot.com
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  1. 17085 Offline 17085
    17085 (Dmitriy) April 2 2019 23: 09
    -1
    Therefore, Freon is used in household appliances, as it is neutral and not dangerous to humans. He is also cheap.
    The most important thing: aluminum corrodes upon contact with water, and under the influence of active magnetic and electric fields, it corrodes rapidly, since it includes gadolinium, terbium, dysprosium, holmium and cobalt.
    1. Igor Nifontov Offline Igor Nifontov
      Igor Nifontov (Igor Nifontov) April 3 2019 21: 21
      +1
      Car antifreeze instead of water will solve the problem. Used in all cars, the environment is super aggressive (temperature under 100 degrees), aluminum parts as much as you want. In general, the argument about corrosion is weak, this problem has long been practically resolved.
  2. Sergey Latyshev (Serge) April 3 2019 09: 07
    0
    And when can I buy awakes?
    Straight "refrigerator killer" for Medvedev!
  3. AICO Online AICO
    AICO (Vyacheslav) April 3 2019 17: 58
    0
    Sausage from there, and it’s a hrenak to the side wall - you start to tear it off, and he also growls at you - I won’t give it away !!!
    1. nesvobodnaja Offline nesvobodnaja
      nesvobodnaja (Unfree Press) April 18 2019 13: 52
      0
      )))) just the plot for the commercial ...)
  4. Vkd dvk Offline Vkd dvk
    Vkd dvk (Victor) April 4 2019 11: 47
    +2
    The author needs to smear a mixture of heavy metals on a sandwich, and compare the harmfulness of these poisons with harmless freon. True, you must first pay for this experiment a couple of tens of millions of rubles. Because rare earths are called that. because rare. Hence the price .....
    There is a well-developed and relatively cheap cooling technology using Peltier elements. A semiconductor junction that can be connected in series to a battery to produce a very low temperature. Up to minus 70 degrees. Without dust, noise, odors and so on.
  5. steelmaker Offline steelmaker
    steelmaker April 12 2019 20: 38
    +1
    We have invented a lot of things. Only then did these inventions come up anywhere, but not in Russia.