The hottest member Donghengyu, China's refrigerati

Member Dong Hengyu: Although the holiday in China is from the 20th to the 22nd, the refrigeration technology urgently needs a "new revolution"

as a new refrigeration technology, magnetic refrigeration has low energy consumption and no pollution, the cycle efficiency can be as high as 50%, and all raw materials and circulating media are pollution-free. The state should strengthen the R & D and promotion of magnetic refrigeration technology to replace the traditional gas compression and expansion refrigeration. In China, the refrigeration industry accounts for more than 15% of the total energy consumption of the society. It can be said that it is a large polluter with high energy consumption, and there is an urgent need to achieve energy conservation and emission reduction through technological upgrading. Donghengyu, vice president of the China Association for the promotion of ecological ethics education, said in an interview that at present, China mostly adopts the refrigeration technology of gas compression and expansion. The Carnot cycle efficiency of this method is only below 20%, which is high energy consumption and low efficiency, and the main component of the emitted gas is carbon dioxide, causing the greenhouse effect and polluting the atmospheric environment

Dong Hengyu introduced that refrigeration technology is actually closely related to our life and is widely used in industry, agriculture, military, aerospace and all fields of our daily life. In addition to the food storage we know, there are all kinds of air conditioners, medical devices and gas liquefaction, which are inseparable from refrigeration technology

as a new refrigeration technology, magnetic refrigeration has low energy consumption and no pollution. The cycle efficiency can be as high as 50%, and all raw materials and circulating media are pollution-free. Dong Hengyu suggested that the state should strengthen the R & D and promotion of magnetic refrigeration technology to replace the traditional gas compression and expansion refrigeration

it is understood that at present, there are only more than 20 units and research groups in China engaged in research and development from materials, magnetic fields to magnetic refrigerators, which are mainly used in small-scale devices such as extremely low temperature and liquefied helium. There are still many basic theories, so it is not only companies from the UK that can use this kind of ability in their own development projects that are immature. Donghengyu said that in recent years, countries have announced that they attach importance to the role of energy conservation and emission reduction in the atmospheric environment in the first batch of "green benchmark enterprises" of automotive materials, and refrigeration technology urgently needs to achieve a more comprehensive technological upgrading through research and development