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update h2 pipe losses #933

Merged
merged 3 commits into from
Feb 16, 2024
Merged

update h2 pipe losses #933

merged 3 commits into from
Feb 16, 2024

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lisazeyen
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@lisazeyen lisazeyen commented Feb 15, 2024

Closes # (if applicable).

  • in the German Kernnetz we have planned pipe capacities ranging between 1.2-17 GW_H2 with 70 bars
  • DEA (sheet name H2 70) assumes total pipe losses for this pipe size of 1.3-2.2%/1000 km (losses are higher with higher operating pressure).

I think that includes the energy demand of the compressors, which is in DEA data ranging between 0.7-0.9% for pipes operating at 70 bar.

I would suggest taking the mean value, so 0.8% energy demand for the compressors and 1.75%/1000 km total pipe losses. I subtracted in the PR now for the pipe losses without the compressors 100-(1.75-0.8)= 99.05 -> 0.9905
Do we assume that the compressors are installed

Changes proposed in this Pull Request

Checklist

  • I tested my contribution locally and it seems to work fine.
  • Code and workflow changes are sufficiently documented.
  • Changed dependencies are added to envs/environment.yaml.
  • Changes in configuration options are added in all of config.default.yaml.
  • Changes in configuration options are also documented in doc/configtables/*.csv.
  • A release note doc/release_notes.rst is added.

@lisazeyen lisazeyen requested a review from fneum February 15, 2024 14:08
@fneum
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fneum commented Feb 16, 2024

I think all of it refers to the compressor:

image

https://ens.dk/sites/ens.dk/files/Analyser/technology_data_for_energy_transport.pdf page 133

So maybe just 1 - 0.018 = 0.982 for the compression demand.

@fneum
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fneum commented Feb 16, 2024

Ah, and the "Energy demand, compressor filling station %" is only for the entry into the pipeline network. I think we should ignore this one because pipelines can pass through regions. Proper modelling would distinguish H2 bus and H2 pipeline bus with filling compressor link connecting the two.

We assume compressor cost in the investment cost of the pipelines.

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@fneum fneum merged commit 60406f1 into master Feb 16, 2024
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2 participants