In the Toyota Car industry, aluminum foil corrugated pipes for Petrol Car can be used in shifter cables, speed indicator cables, hydraulic systems, power cables and LPG systems for protection purposes. So, what are the factors that affect the use effect of insulated pipes for Petrol Car? We have sorted out this issue and come up with several important reasons, which are summarized as follows.
1. The temperature of Petrol Car has a direct impact on the thermal conductivity of various types of insulation materials. As the temperature of Petrol Car increases, the thermal conductivity of materials increases. Because when the temperature increases, the thermal motion of the solid molecules of the material increases, and at the same time, the thermal conductivity of the air in the pores of the material and the radiation between the pore walls also increase. However, this effect is not significant in the temperature range of 0-50°C. Only for materials at high or negative temperatures, the effect of temperature must be considered.
2. At normal temperature, the thermal conductivity of loose granular materials of Petrol Car decreases as the particle size of the material decreases. When the particle size is large, the size of the gaps between the particles increases, and the thermal conductivity of the air between them will inevitably increase. In addition, the smaller the particle size, the less the thermal conductivity of Petrol Car is affected by temperature changes.
3. In Toyota Car insulation materials, most of the heat is conducted from the gas in the pores. Therefore, the thermal conductivity of Toyota Car insulation materials is largely determined by the type of filling gas. If helium or hydrogen is filled in the low-temperature engineering of Petrol Car, it can be used as a first-order approximation. It is believed that the thermal conductivity of the insulation material of Petrol Car is equivalent to the thermal conductivity of these gases, because the thermal conductivities of helium and hydrogen are relatively large.
2. At normal temperature, the thermal conductivity of loose granular materials of Petrol Car decreases as the particle size of the material decreases. When the particle size is large, the size of the gaps between the particles increases, and the thermal conductivity of the air between them will inevitably increase. In addition, the smaller the particle size, the less the thermal conductivity of Petrol Car is affected by temperature changes.
3. In Toyota Car insulation materials, most of the heat is conducted from the gas in the pores. Therefore, the thermal conductivity of Toyota Car insulation materials is largely determined by the type of filling gas. If helium or hydrogen is filled in the low-temperature engineering of Petrol Car, it can be used as a first-order approximation. It is believed that the thermal conductivity of the insulation material of Petrol Car is equivalent to the thermal conductivity of these gases, because the thermal conductivities of helium and hydrogen are relatively large.