Tips of the principle of heat insulation

· Conduction and heat transfer: nano-level fine powder, very small nano-level point contact thermal resistance is very large, making the conduction and heat transfer effect is very small;

· Convective heat transfer: the average nanoscale porosity is 20 nm, and the average free path of static air thermal movement at normal temperature is 60 nm. Air molecules are locked and cannot carry out micro-convective heat transfer, which makes the convective conduction effect very low;

· Radiation heat transfer: The heat insulation material is added with nano-level high temperature anti-infrared material, so that the radiation heat transfer dominated by radiation at high temperature is reduced to an ultra-low point