 |
In the recent wave of smart homes, refrigerators are becoming more and more intelligent, but today's refrigerators still use the principle of compression refrigeration that has not changed for nearly 100 years, and still can not be separated from compressors, condensers and fluorine-containing refrigeration. Agents, and these refrigerants do not destroy the ozone layer or generate greenhouse gases. So how can we get the refrigerator out of chemical refrigerants and become more environmentally friendly? The answer may be in magnetic refrigeration technology, and a group of researchers from Canada and Bulgaria have discovered a new method that will allow this cutting-edge technology to move toward.
The cooling principle of magnetic refrigeration technology is the “magneto-thermal effectâ€, which is the effect that the temperature of the solid magnetic material changes when the applied magnetic field changes. For example, when the ferromagnetic material enters the magnetic field, the temperature increases, and the temperature drops when leaving the magnetic field. The temperature change caused by this magnetic field is related to the change of the atomic lattice structure of the magnetic material, and conduction of the low temperature generated by the magnetic material by the heat transfer liquid (such as water) can help the refrigerator to cool.
When the researchers measured the standard magnetocaloric effect of a lanthanum-manganese oxide, it was unexpectedly discovered that the crystal of this ferromagnetic material can generate a huge magnetocaloric effect when it is rotated in a constant magnetic field without having to make the magnetism like the standard magnetocaloric effect. The material repeatedly enters and exits the magnetic field.
The use of this rotary magneto-caloric effect can greatly reduce the energy consumption of the refrigerator, and opens the door to a simpler, more efficient, and more compact magnetic refrigeration system, leaving magnetic refrigeration technology closer to home and industrial applications.
Magnetic refrigeration refrigerators currently face two major problems, first, the magnetic materials required are expensive, and second, it is difficult to reduce the entire device to the acceptable size of the family under the premise of ensuring the cooling effect. However, with the advancement and maturity of related technologies, we may be able to see magnetic refrigerators in the home after 10 years.
China Hex Roofing Screw,Galvanized Hex Head Self Drilling Screw supplier & manufacturer, offer low price, high quality Hexagon Colour Head Self Drilling Screw ,Hex Roofing Drilling Screw, etc.
High Quality Self Drilling Hex Head Screws
Hot Tags: hwh self drill screw, China, manufacturers, suppliers, factory, customized
Torx or star drive heads provide lots of power transfer between the driver and screw and are a great option when many screws are needed, as they provide minimum wear to bits. They are, interestingly, often referred to as [security fasteners," as they`re the choice of schools, correctional facilities, and public buildings, as well as automotive and electronic manufacturing, where the ability to remove hardware needs to be discouraged.
Sheet metal or panhead screws are useful, when the fastener does not need to be flush with the material (countersunk). Since the head is wider and the thread extends the entire length (no shank), this type of screw head is excellent for joining wood to other materials, metal included.
Hex Roofing Screw,Galvanized Hex Head Self Drilling Screw,Hexagon Colour Head Self Drilling Screw ,Hex Roofing Drilling Screw
Handan Jiankun Hardware Products Co., Ltd / Handan best import and export trade co., Ltd , https://www.jkscrew.com