Explain how to select based on pressure and material. Process Piping Fundamentals, Codes and Standards
Calculate the total pressure drop over the routing path. Ensure it does not exceed the allowable pressure drop budget defined by process requirements or equipment capabilities. 3. Pressure Ratings and Material Selection
v22gthe fraction with numerator v squared and denominator 2 g end-fraction = Velocity head = Elevation head = Total head loss due to friction and fittings 2. Pipe Sizing Methodology
Di=4Qπv=4×0.0417π×2.0≈0.163m=163mmcap D sub i equals the square root of the fraction with numerator 4 cap Q and denominator pi v end-fraction end-root equals the square root of the fraction with numerator 4 cross 0.0417 and denominator pi cross 2.0 end-fraction end-root is approximately equal to 0.163 space m equals 163 space m m Explain how to select based on pressure and material
= Weld joint strength reduction factor (primarily used for high-temperature creep-range applications; otherwise equals 1.0)
Sized based on Mach number (< 0.3) and allowable pressure drop. 2. Pipe Sizing Criteria
Friction between the fluid and the pipe wall causes pressure drop. The Darcy-Weisbach equation is the industry standard for calculating this head loss ( The Darcy-Weisbach equation is the industry standard for
Darcy Friction Factor (determined from the Moody Chart based on Reynolds number and pipe roughness). Minor Losses Fittings (bends, valves) introduce additional turbulence.
Check that the total accumulated pressure drop does not exceed the available pump head or compressor differential.
= Minimum required wall thickness including mechanical, corrosion, and erosion allowances ( = Internal design gauge pressure ( MPacap M cap P a Docap D sub o = Outside diameter of the pipe ( their policies apply.
Total Equivalent Length (Ltotal)=Lstraight+∑LeqTotal Equivalent Length open paren cap L sub t o t a l end-sub close paren equals cap L sub s t r a i g h t end-sub plus sum of cap L sub e q end-sub
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.