Can graphene be used for floor heating?

Yes Graphene has very good thermal conductivity. The thermal conductivity of pure defect-free monolayer graphene is as high as 5300W/mK, which is the highest thermal conductivity carbon material so far, and its thermal conductivity is higher than that of single-walled carbon nanotubes (3500W/mK) and multi-walled carbon nanotubes (3000W/mK).

When used as a carrier, the thermal conductivity can also reach 600 W/MK, and the ballistic thermal conductivity of graphene can reduce the lower limit of ballistic thermal conductivity per unit circumference and length of carbon nanotubes.

The structure of graphene is very stable, and the carbon-carbon bond is only 1.42. The connection between carbon atoms in graphene is very flexible. When an external force is applied to graphene, the surface of carbon atoms will bend and deform, so that carbon atoms do not need to be rearranged to adapt to the external force, thus maintaining structural stability. This stable lattice structure makes graphene have excellent thermal conductivity. In addition, when electrons in graphene move in orbit, they will not be scattered due to lattice defects or the introduction of foreign atoms.

Extended data:

Characteristics of graphene floor heating;

1, comfortable and healthy. The temperature of floor heating is from bottom to top, which gives people the comfort of warm feet and cold head, which accords with the theory of traditional Chinese medicine. Heat is mainly transmitted by radiation, which will not dry the air. The radiation wavelength is 8- 12 micron far infrared, which is beneficial to human body.

2. Energy conservation and environmental protection. In order to achieve the same room temperature effect, it can be reduced by 2-3 degrees compared with traditional heating, which is effective in saving energy. Indoor air will not be polluted.

3. The heat dissipation is even and stable. Because floor heating transfers heat through concrete, the heat distribution is uniform, and concrete has the function of energy storage, which can keep the room temperature stable even if it is intermittently heated.

4. Reduce floor noise. Generally, precast slabs or cast-in-place slabs are used for floors in China, and the sound insulation effect is poor. If people go upstairs, it will affect the downstairs. Floor heating is used to increase the insulation layer, which has a very good sound insulation effect and can reduce noise pollution. The floor heating process is silent, the indoor environment is quiet, and there is no air conditioning noise, which helps children concentrate on their studies, thus helping to improve their learning efficiency.

Baidu encyclopedia-graphene