Pipe Sizing HydraulicsOne of the task of process design engineers is the sizing of process lines. This is one of the most important and critical activities for any project. Process line sizing involves specifying the optimum pipe size required to transport a given fluid from one process equipment to the other while meeting design process parameters such as flow, velocity & pressure.Flow in pipes can be classified as laminar, transitional or turbulent depending on the Reynolds No. of the fluid flowing through the pipe. Laminar flow is smooth with velocity of the fluid constant at any point in the fluid. Turbulent flow involves irregular fluctuations.Fluid flowing through a pipe experiences pressure drop which is a function of the pipe size, friction factor, pipe length and fluid velocity. There exist several correlations for obtaining the friction factor for the flow. These correlations are dependent on the Reynolds no. Some of which include;Hagan Poiseuille equation (for laminar flow)Churchill Equation (for transitional flow)Colebrook Equation (for turbulent flow)Attached is a basic process line sizing task for graduate process design engineers shared by Vijay SarathyI have also attached a step by step solution in a MS word format.