New refrigeration equipment may replace air conditioners

Recently, a research team at Stanford University in the United States developed a new type of refrigeration equipment that can replace air conditioners. A research team from Stanford University in the United States said that this new technology will help people save electricity without having to endure the heat, because it can reduce the use of air conditioning, or even eliminate it completely. This is a device coated with a new material that reflects sunlight onto a flat surface to protect it from heat. It is also capable of transferring heat accumulated inside the building to the outside.

Previously, they said they had also used cooling equipment to develop other systems using the same concept for cooling, but they only worked at night when the sun was not shining directly. Now, they have created a new layer of material that also works during the day. It is said that this material can reflect 97% of the sun's rays, thereby achieving a cooling effect.

The model they presented is a circular mirror-like partition coated with multiple layers of ultra-thin material that performs dual functions. On the one hand, it can reflect the sunlight that has hit the surface of the object to prevent heat. On the other hand, it can transfer heat such as infrared rays from inside the building directly to the outside.

Infrared ray is invisible, it is a kind of electromagnetic wave and thermal radiation with a wavelength much larger than that of visible light. For example, when a person is close to an oven without touching it, the heat he or she feels is infrared rays.

The researchers say their device is capable of reducing the temperature of buildings by 5 degrees Celsius. and took the test on a sunny winter day in Stanford, California. Aaswath Raman, the main person in charge of this study, said: 'We placed the refrigeration equipment in the sun for 7 hours during the day and a shorter time at night. During the test, the temperature near the cooling equipment was 9 degrees Celsius to 17 degrees Celsius.'

Scientists recommend covering roofs with these heat-dissipating 'mirrors' because they are designed for low-cost installation and large-scale use. Roman said, 'We believe that if we continue research and development, this technology will be available within 3 to 5 years.' They should have made larger panels and improved technology to dissipate heat more efficiently from inside the building.