The temperature regulation of skyscrapers is a real problem for the environment, as we have said before. Large glass buildings absorb heat from exposure to the sun to a greater extent, which naturally raises the temperature and complicates cooling work.
The future of construction in large metropolitan areas for the research and development of new sustainable energy production systems. In this direction, a team of engineers has designed a system that could help cool buildings with a zero cost of electricity.
This would be possible thanks to radiative cooling, a passive cooling strategy that reduces energy consumption to the limit. Its most practical application is to store the heat radiated by the buildings and contribute to the reduction of the energy expenditure required by the air conditioners.
This project, the result of the collaboration between King Abdullah University of Science and Technology and the University of Wisconsin-Madison, has developed a structure covered with a thin polymer/aluminium film. This material allows the system to absorb heat from the air and retain it inside the case, thus transmitting the cooling energy.
It is a technology capable of operating even at night in optimal atmospheric conditions, however, it is essential to achieve an efficient energy reserve during the day when the cooling demand reaches its highest peak.
Reduce The Temperature During The Day by 6 Degrees
The results of the first tests, published in the scientific journal Nature Sustainability, showed that the device was able to reduce the temperature of a small, closed space during the day up to 6 degrees. At night, the figure rose to 11 degrees.
To achieve the desired objective it would be necessary to install numerous devices on the roof of a building. Then, the aluminium cover would fulfil its function by reflecting sunlight to avoid directly impacting the roof and the heat is introduced.