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h2-in-pipes

Equation of state for natural gas (several varieties) and mixtures with hydrogen. Also Moody plots for the calculation of the friction factor in rough pipes.

https://github.com/philipsargent/h2-in-pipes

Science Score: 44.0%

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Repository

Equation of state for natural gas (several varieties) and mixtures with hydrogen. Also Moody plots for the calculation of the friction factor in rough pipes.

Basic Info
  • Host: GitHub
  • Owner: PhilipSargent
  • License: mit
  • Language: TeX
  • Default Branch: main
  • Size: 36.5 MB
Statistics
  • Stars: 1
  • Watchers: 1
  • Forks: 1
  • Open Issues: 0
  • Releases: 4
Created over 2 years ago · Last pushed about 1 year ago
Metadata Files
Readme License Citation

README.md

h2-in-pipes

This work includes an Equation of state for natural gas (several varieties) and mixtures with hydrogen. We also have Moody plots for the calculation of the friction factor in rough pipes.

To cite this work, please click on "Cite this repository" on the right-hand menu.

This is research code. It is not qualified for any design purpose whatsoever. It contains bugs and has not been through any code review process.

We have a paper just accepted for publication (29/02/2024) in J.Intl Hydrogen Energy which documents and uses these calculations for the case where UK distribution gas pipes are repurposed to carry hydrogen. If you would like a preprint of this paper, please just look at the file https://github.com/PhilipSargent/h2-in-pipes/blob/main/SUBMIT3-BOTH-Hydrogenpipe_friction.pdf in this repo.

The oxygen-firing effect on the dew point and thus the efficiency of condensing boilers is describe in an online article: https://philipsargent.wordpress.com/2024/03/01/oxygen-boilers-making-condensing-boilers-more-efficient/ p2_h2_ratio

peng_z_p

w2_h2_ratio_pt

moody_afzal

peng_z

peng_bf visc-temp

To deliver the same calorific value as hydrogen instead of natural gas, the hydrogen needs to be moving at least as 3x faster than the natural gas (int he same pipe), but the difference in flow regime, friction factor and compressibility factor Z all make a difference too: peng_v_ratio

peng_ηη_H2 peng_ηη_NG condse_η20

We can use the models to calculate the linepack for natural gas and for hydrogen when flowing in the same pipe and delivering the same combustion energy (HHV):

pipe_lpm.png

pipe_lpm_ratio.png

Owner

  • Name: Philip Sargent
  • Login: PhilipSargent
  • Kind: user
  • Location: Cambridge, UK

Citation (CITATION.cff) 

cff-version: 1.2.0
message: "If you use this software, please cite it as below."
authors:
- family-names: "Sargent"
  given-names: "Philip"
  orcid: "https://orcid.org/0000-0002-0968-4467"
- family-names: "Sargent"
  given-names: "Michael"
  orcid: "https://orcid.org/0000-0000-0000-0000"
title: "Hydrogen in pipes"
version: 0.1.1
doi: 10.5281/zenodo.10368611
date-released: 2023-12-12
url: "https://github.com/PhilipSargent/h2-in-pipes"

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