Massachusetts Institute of technology has developed a window coating that can repel 70% of the sun's heat
They prevent their access to the windows, which-most likely - avoids lowering the degrees of air conditioning in companies and businesses, and thus saves electricity consumption.
Author Shelby Rogers-in a report published by the American website "intersting Engineering"-said that while winter hugs the northern hemisphere, warm summer temperatures overwhelm the southern hemisphere.With the arrival of summer in both hemispheres, buildings are deliberately lowering air conditioning temperatures to cope with the heat.But this usually causes companies and organizations to receive very high electricity bills.
For example, in the United States alone, office buildings spend about دول 29 billion to ensure that temperatures remain low inside, even if it means a high electricity bill.According to statistics, air conditioners drain about 6% of total energy expenditure in the United States.
The author explained that the Massachusetts Institute has provided a new solutionthat will help companies and organizations save hundreds of thousands of dollars that they spend on electricity in order to cool their buildings.In fact, it is now possible to paint windows with a heat-insulating layer that will repel 70% of the sun's heat.
The author confirmed that the professor of Mechanical Engineering, Nicholas Fang, said that this heat-insulating layerallowed the buildings to cool themselves spontaneously, while allowing a sufficient amount of lighting to enter the interior.Fang also considered this option to be economical in terms of cost, compared to other expensive solutions for equipping windows with curtains to ward off heat.
Professor Fang added: "the smart windows that are currently on the market are either not effective in countering the heat of the sun, or they require more energy to operate, similar to Windows with electric tinting, which means that you will basically pay for making the windows dim.We were confident that there is room to invent new blinding materials and coatings, to provide better options in terms of smart windows."
Simple energy solutions to the problems of megacities
According to the author, Fang began working on this idea in collaboration with a team from the University of Hong kongthe goal of their endeavors was to reduce energy consumption during the wet summer months."Overcoming this challenge is crucial for a major metropolitan area like Hong Kong, where they face tight deadlines in terms of energy supply,"Fang explained.In fact, Hong Kong recently pledged to reduce energy consumption by about 40% by 2025.
The author explained that Professor Fang's students at MIT noticed a big problem emanating from the windows and how they save sunlight.In this regard, Fang acknowledged that "every square meter enters the equivalent of five hundred watts of energy, in the form of heat emitted by the sun through the window, equivalent to about five light bulbs".
Fang's research was based on discovering how phase-changing materials act to scatter light, and Fang and the team of researchers wanted to adopt these materials to find a new solution for Windows, especially if they are able to reflect sunlight and counteract heat. After further consideration of thermochromic materials, the team decided to use small heat-sensitive particles known as"poly (n-isopropylacrylamide)2-aminoethyl methacrylate hydrochloride", the author said.
A cost-effective and convenient solution
The researchers installed two layers of the finished product on a 12-inch by 12-inch window glass.After that,they directed the light through the window to simulate sunlight.And by the action of heat the window "froze". The researchers discovered that this material isolated 70% of the heat from the lamp. The author pointed out that without the insulating layer, the temperature rose to 102 Fahrenheit (39 Celsius)but when used, the temperature remained within 93 Fahrenheit (34 Celsius).
The team at MIT hopes to develop this model of windows and apply this solution to different surfaces, to achieve maximum energy savings using a window coating that can repel the heat of the sun