2. In the design of production equipment and transport pipelines, viscosity is one of the main parameters for process calculation, and the design line speed and pressure drop of fluids in transport pipelines are closely related to viscosity.
3. The size of viscosity is also related to the distillation range of petroleum products and structural characteristics. Usually, the viscosity increases with the distillation range, and the viscosity of the fractions with the same distillation range and different chemical composition is different, with smaller chain alkanes and larger aromatics and cycloalkanes.
4. degree is an important quality index of lubricating oil. Most of the lubricant grades are determined by the viscosity value at a certain temperature. The viscosity index (VI), which reflects the viscous temperature performance of the lubricant, is also calculated from the viscosity value of the lubricant at 40℃ and 100℃.
5. For fuel oils such as jet fuel and diesel fuel, the size of the viscosity is related to the atomization of the fuel in the engine and therefore directly affects the combustion efficiency of the fuel.
