Researchers at Stanford University in the United States have recently developed a new type of clothing made of nanowires, which generates heat and maintains the temperature from the body. It is much warmer than ordinary clothes. This technology helps to save a lot of building energy consumption and reduce dependence on traditional energy sources. The research results are published in the latest issue of the ACS Nano Express.
Heating consumes a lot of energy and is one of the major sources of greenhouse gas emissions. The researchers pointed out that nearly half of the world's energy consumption is in building heating and home heating, and this kind of comfort pays a considerable environmental cost, resulting in 1/3 of the world's total greenhouse gas emissions.
In response, scientists and policy makers try to maintain the indoor temperature by improving the insulation properties of building materials, reducing the adverse effects of heating. Although energy-efficient buildings based on improved insulation design are rapidly developing, a large part of energy is still wasted on heating space and non-human objects. New research has adopted different ideas, focusing on energy rather than space. According to a report by the Physicist Organization Network on January 7, the “personal thermal management system†demonstrated by researchers uses metal nanowires to reduce this waste.
This nanowire woven cloth is a lightweight, breathable mesh-like material that has the same flexibility as a normal jacket, and its breathability and durability are not "sacrificed" by the porous structure of the nanowires. Compared with the materials of ordinary clothes, special nano cloth can more effectively lock the heat generated by the body and keep the body warm.
Moreover, since the cloth is made of a metal nanowire material that can form a conductive network, it not only reflects human infrared radiation and has a high degree of thermal insulation, but also allows Joule heating to supplement passive insulation, which can be further heated by the power supply to provide heat. The researchers calculated that this kind of hot textile can save about 1,000 kilowatt-hours per person per year, which is equivalent to the average monthly electricity consumption of a family in the United States. (Hua Ling)
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