Hydrogen Pipeline Linepack Flexibility Calculator
Translate hydrogen pipeline pressure bands into available linepack flexibility expressed as mass and equivalent lower-heating-value energy.
Verify calculations with detailed hydraulic models and regulatory design codes before operating decisions.
Examples
- 1,800 m³ volume, 30–70 bar, 15 °C, Z=0.98 ⇒ 2,420.43 kg swing, 80.68 MWh
- 950 m³ volume, 20–55 bar, default temp, ideal gas ⇒ 1,307.04 kg swing, 43.56 MWh
FAQ
How do I incorporate temperature gradients along the pipeline?
Use a temperature weighted by segment length or flow residence time. For large gradients, split the pipeline into sections and sum the masses.
What if the pipeline experiences short-term pressure excursions?
Model excursions separately with transient simulations. The calculator is designed for steady-state bands declared in operating procedures.
Does the compressibility factor vary with pressure?
Yes. Use values sourced from GERG-2008 or other equations of state. When pressure varies widely, compute an average Z weighted by the expected dwell time at each pressure.
Can I estimate deliverable flow from the swing mass?
Divide the swing mass by the planned discharge duration to approximate available throughput, then cross-check against pipeline friction and compressor constraints.
Additional Information
- Linepack mass derives from the ideal gas law scaled by the compressibility factor for hydrogen.
- Lower heating value converts hydrogen mass to dispatchable energy comparable with storage assets.
- Maintain consistent absolute pressure units; add atmospheric pressure if measurements are in barg.