Decarbonization›H₂ Pipeline Pressure Drop
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H₂ Pipeline Pressure Drop

Hydrogen · Compressible flow · MW=2.016

H₂ Pipeline Pressure Drop
Compressible-flow pressure drop using ideal-gas EOS with simple compressibility correction (Z=1+0.0125·Pr) and Sutherland viscosity for hydrogen. MW = 2.016 g/mol, k = 1.41. Friction via Colebrook-White, integrated over N segments.

Flow & Geometry

kg/h
mm
km

Operating Conditions

bara
°C
mm
m
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📚 Learn the Theory

Hydrogen pipeline hydraulics: H₂ properties (MW=2.016, k=1.41, low Z), Sutherland viscosity, Colebrook friction, and API RP 14E erosion limits.

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Engineering Basis

  • Density: ρ = P·MW/(Z·R·T), Z = 1 + 0.0125·Pr (Pc_H₂ = 13 bara).
  • Viscosity: Sutherland-form, μ_ref = 8.76 µPa·s at 273 K, S = 72 K.
  • Friction: Colebrook-White (iterated). Pressure drop: Darcy-Weisbach segmented.
  • Erosion velocity: API RP 14E v_e = 122/√ρ (metric C=100).
  • Standards: ASME B31.12, ASME B31.8, AGA Report No. 8, API RP 14E.
  • For high-P / cryogenic H₂: use NIST WebBook / Leachman 2009 EOS.

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