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Pellet boilers for decentral use #255

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Pellet boilers for decentral use #255

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5b61d2f
Added pellet boiler process
millingermarkus Aug 1, 2022
082d655
Added pellet_boiler toggle option in yaml
millingermarkus Aug 1, 2022
65aaa3d
Added tech color for biomass boiler and minor adaptations to biomass …
millingermarkus Aug 1, 2022
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2 changes: 2 additions & 0 deletions config.default.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -263,6 +263,7 @@ sector:
biomass_transport: false # biomass transport between nodes
conventional_generation: # generator : carrier
OCGT: gas
biomass_boiler: true


industry:
Expand Down Expand Up @@ -508,6 +509,7 @@ plotting:
solid biomass for industry CC: '#47411c'
solid biomass for industry co2 from atmosphere: '#736412'
solid biomass for industry co2 to stored: '#47411c'
biomass boiler: '#8A9A5B'
# power transmission
lines: '#6c9459'
transmission lines: '#6c9459'
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16 changes: 16 additions & 0 deletions scripts/prepare_sector_network.py
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Expand Up @@ -1521,6 +1521,22 @@ def add_heat(n, costs):
capital_cost=costs.at[key, 'efficiency'] * costs.at[key, 'fixed'],
lifetime=costs.at[key, 'lifetime']
)

if options["biomass_boiler"] and name not in ["urban central"]:
#TODO: Add surcharge for pellets
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is this TODO still open?

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Yes it is, but not so urgent in my mind. A surcharge improves cost accuracy but this tech plays a very minor role in my runs so far anyway. I'll add the pelletisation cost to technology data and refer to it here when I get there.

n.madd("Link",
nodes[name] + f" {name} biomass boiler",
p_nom_extendable=True,
bus0=spatial.biomass.df.loc[nodes[name], "nodes"].values,
bus1=nodes[name] + f" {name} heat",
bus2="co2 atmosphere",
carrier=name + " biomass boiler",
efficiency=costs.at['biomass boiler', 'efficiency'],
efficiency2=costs.at['solid biomass', 'CO2 intensity']-costs.at['solid biomass', 'CO2 intensity'],
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the biomass boilers do not emit any CO2 are they? If not, one can remove the connection to bus2 and efficiency2 when adding them

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Well, no net emissions as long as biomass is assumed to be carbon neutral. So yes this connection is technically not necessary (but maybe good to keep for consistency with other biomass techs?). I think both are ok, you decide!

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Alright, I am going to remove it for now to be consistent with how we implement the biomass CHPs for example

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one more question @millingermarkus the costs and efficiencies for the biomass boilers should they be solid biomass boiler steam in the technology-data or did I missed something when pulling your changes into the main code?

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No, that tech was missing in the main technology data, I made a pull request now: PyPSA/technology-data#61

capital_cost=costs.at['biomass boiler', 'efficiency'] * costs.at['biomass boiler', 'fixed'],
lifetime=costs.at['biomass boiler', 'lifetime']
)


if options["solar_thermal"]:

Expand Down