With this heat that we have suffered recently, only a few want more than a good dose air conditionerNevertheless, the use of it is too expensive, irritates the throat and dry the environment. Therefore, it is important to search Other ways to cool the house. There are many options, but one of the most investigated is as simple as Paint the white walls. This is what has traditionally been done in the villages of very sunny regions, although in recent years life lime was changed from painting, developed conscientiously to cool as much as possible.
A simple fact of white drawing already helps to cool the house, because, although black colors look at the same time because they absorb all the radiation that comes to them, the white color reflects the entire wavelength, so that they reach our mixed eyes, which leads to this Lack of colorHe said very much the field roughThe radiation of the sun almost completely bounces, so that They cannot heat the inside of the house.
The problem is that that we obviously actually see the whites This is not an ideal goal. This has nuances and impurities. Therefore, science was looking for painting from The perfect whiteWhich reflects as much solar radiation as possible and, with it, reduces the temperature inside the houses. Also tried to add nanoparticles that improve Radiation cooling. Unfortunately, this is not enough in moist places. Air, rich in water vapor, retains heat, so, regardless of how much the radiation, which heats the walls, cannot be correctly cooled at home. This is a difficult problem, but the team of Singapore scientists seems to have found a solution.
What is usually done to cool the house using paint?
We have already seen that white paint helps to cool the house because reflects most of the solar radiation This affects the walls. Thanks to nanotechnologies in recent years, paintings have been developed even faster, which almost leads to this benefit. In addition, these nanoparticles facilitate that the walls emit more infrared radiation than they absorb, also causing what is known as it is known as Radiation coolingThe field all of them are advantages that completely reduce the use of air conditioning. But in Singapore this did not work too much?
Why do Singapore need both air conditioners?
Singapore scientists saw that the use of white paint with nanotechnology barely reduced the use of air conditioning in houses. The temperature was still very high, because Moisture retained heat.
Therefore, they developed this new Cement paintThey used this material by the field because This is very porous Which allows you to capture part of this moisture present in the air. As soon as this moisture accumulates in the fields, the time comes when it can no longer be. It must be released, and this is necessary for some heat. This helps to move from liquid to gaseous, evaporating and leaving a free pore to capture more moisture. This is a process It looks like sweating with whom we are cool people.
The heat used by water for evaporation He is extracted from the inside of the house. Therefore, it is not only possible to reflect solar radiation and achieve radiation cooling. Part of the moisture from the air is also removed during Heat is removed from the inside of the walls. It helps to cool the house and Significantly reduce the use of the air conditioner.
In fact, when they checked this picture, scientists saw that the electrical costs received from the use of cooling systems It was reduced by 30 % and 40 %.
They also found an additional advantage
Another advantage of this interesting picture in order to cool the house is that it remains whiter. After two years of use, commercial paintings of white or nanotechnologies of steel became something yellowish However, this paint based on cement was still Uninhabited whiteThis field allows you to continue to reflect solar radiation and cool the inside of the buildings.
Of course, sweating is an effective method for reducing temperature. How did this not happen for us before making the paint later?
Source: Hiper Textual
