The scientific team led by Stanford University electrical engineering professor Shanhui Fan has been developing new cooling systems for the past few years. The team draws heat from the building and launches it into space through radiant cooling, without requiring any external power supply throughout the process. Now researchers have paired this technology with solar cells and designed a system that can both cool buildings and generate electricity.
Professor Fan said: "In the future, the first batch of equipment we created can achieve the effect of producing energy and saving energy by controlling two different light sources." This hybrid device uses a double-layer solar cell panel design. The upper layer is the same as the existing commercial solar panel, while the lower layer is composed of materials that convert the thermal energy of the building into thermal energy.
The team successfully created a prototype device with a diameter close to a pie machine and installed it on the roof of the Stanford Building. The top layer that absorbs sunlight reaches 24 ° C (43 ° F) above the ambient temperature, while the radiant cooling layer shielded below drops to 29 ° C (52 ° F) below the ambient temperature.
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