Using of Multi-Wall Carbon Nanotube (MWCNT) Based Nanofluid in the Heat Pipe to Get Better Thermal Performance

A heat pipe is a heat transfer device with high heat transfer coefficient. It transmits heat through evaporation and condensation of the liquid with little or no temperature drop. Heat pipes generally have three parts, including an evaporator, a thermodynamic part and a condenser part. As the heat reaches the evaporator, the fluid evaporates and produces different pressures in the pipe. Different fluid pressures let the steam pass through the pipe and reach the condenser. In the condenser section, the vapor condenses and the latent heat is released, and then the fluid returns from the internal chip to the evaporator section by capillary pressure.

Carbon nanotubes (CNTs) are cylindrical molecules composed of wound single layer carbon atoms (graphene). They can be monolayer (SWCNT) or multilayer (MWCNT) diameters less than 1 nanometer (nm), consisting of several concentrically interconnected nanotubes with diameters exceeding 100 nanometers. They can even be a few microns or even a few millimeters. Like the building block graphene, CNT is chemically bonded to the sp2 bond. sp2 binding is a strong form of molecular interaction. This feature, coupled with the natural tendency of carbon nanotubes to be constrained by van der Waals forces, offers the opportunity to develop ultra high strength, lightweight materials with high electrical and thermal properties. This makes them attractive for many applications.

Carbon nanotubes formed by the CVD method may be one of two types of multi-wall carbon nanotube (MWCNT) and single wall carbon nanotube (SWCNT). As its name suggests, MWCNT is a coaxial cable shape that helps improve thermal and electrical conductivity. On the other hand, their single wall counterpart SWCNT is more malleable and malleable. North America currently leads the world's carbon nanotube market but China emerges as the world's electronic equipment manufacturing and assembly center and the existence of other major electronics companies such as Japan and Korea also surpasses North America in the Asia Pacific region It helps. Not far future

The evolution of material science and the development of the end user industry will change the carbon nanotube market