Module 3 Process Piping Hydraulics Sizing And Pressure Rating Pdf

The first half of Module 3 focuses on the behavior of fluids as they travel through a pipe. A firm grasp of hydraulic principles is non-negotiable for accurate line sizing, pump selection, and the overall operability of any process.

hm=K⋅v22gh sub m equals cap K center dot the fraction with numerator v squared and denominator 2 g end-fraction Equivalent Length Method ( Leqcap L sub e q end-sub

High velocities cause noise and structural vibration. Pressure Drop: High velocity = high friction losses. General Guidelines: Liquids: Gases/Steam: 2.2 Sizing by Pressure Drop

Compute actual velocity and Reynolds number. The first half of Module 3 focuses on

tn=t+c1−Tolt sub n equals the fraction with numerator t plus c and denominator 1 minus cap T o l end-fraction = (typically for carbon steel) Tolcap T o l

The friction factor depends solely on the Reynolds number:

Velocity must be controlled within industry-standard limits to prevent system degradation: Pressure Drop: High velocity = high friction losses

): Measures fluid resistance to flow. High-viscosity fluids (e.g., heavy oil) require larger pipes and more pump power. Determines if the flow is Laminar ( ), Transition ( ), or Turbulent ( Formula: is velocity and is diameter). 1.2 Pressure Drop ( ) Calculation

to identify flow regimes (laminar vs. turbulent) and pipe roughness. Sizing Methodology Determine required Flow Rate (Q) Select target velocity and calculate preliminary

is an empirical constant (typically between 100 and 125 for continuous service). 4. Pipe Pressure Rating and Wall Thickness Calculation High-viscosity fluids (e

⚠️ For the same NPS, increasing the schedule reduces the inside diameter, which increases fluid velocity and friction loss. You must iterate between hydraulics and pressure rating.

Ltotal=Lstraight+∑Leqcap L sub t o t a l end-sub equals cap L sub s t r a i g h t end-sub plus sum of cap L sub e q end-sub 3. Process Piping Line Sizing Methodology

Valves, tees, and elbows introduce turbulence that causes additional pressure drops. This is accounted for using the method or the Resistance Coefficient ( ) method:

This technical guide covers the core engineering concepts for process piping hydraulics, line sizing, and pressure rating calculations. It aligns with standard professional training modules and industrial practices. 1. Fundamentals of Fluid Flow and Hydraulics

🔍 Include the filetype operator in Google: "module 3" "process piping" hydraulics sizing pressure rating filetype:pdf