feat:add waste heat from renewable fuel production and fuel cells #241
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…troduce fuel cell heat-losses
amos-schledorn
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Great addition @amos-schledorn ! I went quickly through the changes (didn’t double-check the DEA data input).
For the entries based on model assumptions, could we keep a clearer separation from data-based inputs?
Regarding the energy balances affected by the new efficiency parameters: do we define either efficiency-to-heat or heat losses, and take the remainder as the difference?
Finally, I noticed the two 0.002 efficiencies in the methanolisation process—could you clarify these?
inputs/manual_input.csv
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| methanation,heat-losses,2020,0.05,per unit,2017,Based on PyPSA-Eur assumptions (total efficiency of 0.95), | ||
| fuel cell,heat-losses,2020,0.05,per unit,2017,Based on PyPSA-Eur assumptions (total efficiency of 0.95), |
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Where in PyPSA-Eur do I find these assumptions? Shouldn't there be a clear distinction between the data from trusted sources and the parameters that are computed based on assumptions within the model?
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Good point. Upon reconsideration, I've removed the heat losses - should be parameters in PyPSA-Eur, since the assumption is made there.
outputs/US/costs_2020.csv
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| fuel cell,FOM,5.0,%/year,"Danish Energy Agency, inputs/technology_data_for_el_and_dh.xlsx",12 LT-PEMFC CHP: Fixed O&M,2015.0,, | ||
| fuel cell,c_b,1.25,50oC/100oC,"Danish Energy Agency, inputs/technology_data_for_el_and_dh.xlsx",12 LT-PEMFC CHP: Cb coefficient,2015.0,, | ||
| fuel cell,efficiency,0.5,per unit,"Danish Energy Agency, inputs/technology_data_for_el_and_dh.xlsx","12 LT-PEMFC CHP: Electricity efficiency, annual average",2015.0,, | ||
| fuel cell,heat-losses,0.05,per unit,Based on PyPSA-Eur assumptions (total efficiency of 0.95),,2017.0,, |
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Don't full understand the energy balance of the fuel cell:
Is it 1u of hydrogen --> 0.5u electricity + 0.05u heat losses + 0.45u high value heat?
outputs/US/costs_2020.csv
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| methanolisation,efficiency,0.002,per unit,"Danish Energy Agency, inputs/data_sheets_for_renewable_fuels.xlsx",98 Methanol from hydrogen: District heating,2020.0,, | ||
| methanolisation,efficiency-heat,0.002,per unit,"Danish Energy Agency, inputs/data_sheets_for_renewable_fuels.xlsx",98 Methanol from hydrogen: District heating,2020.0,, |
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Is this value intentionally duplicated for both efficiencies?
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Nope, fixed that.
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@cpschau Thanks for the review! I think I've addressed everything. Also checked values with the DEA data and updated the Haber-Bosch heat-efficiency accordingly. |
This PR adds efficiencies for excess heat recovery from renewable fuel production in district heating.
The considered processes are those for which PyPSA-Eur (Fischer-Tropsch, methanolisation, Haber-Bosch, methanation, electrolysis). Electrolysis is already covered:
https://github.com/PyPSA/pypsa-eur/blob/3df3152db900730df34eca86646f4a490940d48a/scripts/prepare_sector_network.py#L5291-L5417
Changes proposed in this Pull Request
heat-losses = 0.05.Checklist
doc.environment.yaml(if applicable).doc/release_notes.rstof the upcoming release is included.Edit
After review from @cpschau, I've removed the hard-coded heat losses for methanation and fuel cells.