Heat transfer is a complex phenomenon. All objects around us emit heat radiation. From a macroscopic point of view, part of these radiations will be reflected and absorbed by the atmosphere, and the other part will become specific wavelengths and escape into the colder outer space. In the past few years, a Stanford University research team has been working on "radiative cooling" technology. Recently they have developed an upgraded version of this technology, using devices like solar panels to cool water and buildings. No need to provide any electricity. The research team's "radiative cooling" technology appeared as early as in 2013, and the recently announced new program added energy research to allow the system to operate without additional power supply. It is understood that the system can extract heat radiation from the building and convert it into a certain wavelength and launch it into space. During this period, the Earth’s atmosphere is directly ignored. In order to resist the heat radiation from the sun, the research team also painted a multilayer optical film on the main equipment of the system, reflecting 97% of the sunlight, so even if the sun does not affect the normal heat removal of the system. In the concept product demonstration, the researchers used an 8-foot (about 20-cm) wide material wafer as the main equipment of the system. Its surface energy was kept at a low temperature, and then the solar panel coating was overlaid on the top, during the cooling process. Can also collect electricity. Afterwards, researchers expanded the system to cool tap water by using pipes in the building. During the test, the team also placed four panels of reflective material on the roof. The water flow in the pipes quickly passed through the pipes under the panel. After three days or more, the tap water temperature was 3 to 5 degrees Celsius lower than the surrounding air. In addition, the researchers used a cooling panel to cool the two-story office in the hot and dry climate of Las Vegas, USA. During the summer tests, the cooling system reduced the temperature of the building by more than 20%. And it saved about 14.3 MWh of electricity. To continue the development of the project, researchers created a company called SkyCoolSystems, which is currently integrating panels into air-conditioning and refrigeration systems. In the long run, one of its main applications is to cool the data center. The study was published in the recent "Nature Energy" magazine. Kitchen Cabinet,Kitchen Hutch Cabinet,Modern Cabinets,Rustic Kitchen Cabinets Ningbo Oulin Import&Export Co.,Ltd. , https://www.oulinfurniture.com
