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Use heatsource based on varying supply temperature #481

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5896d1a
initial commit
tolga-akan May 27, 2026
d3b5c89
small modification
tolga-akan May 28, 2026
d555f0d
list of temperature options are created directly via esdl carries nam…
tolga-akan May 28, 2026
50c708b
Merge branch 'main' into heatsource_usage_based_on_varying_supply_temp
tolga-akan May 29, 2026
de63025
changelog is updated. branch is updated by main
tolga-akan May 29, 2026
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3 changes: 2 additions & 1 deletion CHANGELOG.md
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
# [Unreleased-main] - 2026-05-13
# [Unreleased-main] - 2026-05-29

## Added
- Electricity consumption calculation of geothermal assets, using the defined COP.
Expand All @@ -12,6 +12,7 @@
- Ramp constraints for heat producers are added.
- Maximum and minimum temperature of heat sources are parsed from esdl
- Warnings on potential causes of heat demand not being matched are added in the grow workflow
- A heat source asset is eligible for use only when its maximum temperature meets or exceeds the varying network supply temperatures

## Changed
- Reduced the number of constraints required for headloss calculation with LINEARIZED_N_LINES_EQUALITY setting.
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8 changes: 7 additions & 1 deletion src/mesido/heat_physics_mixin.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1441,9 +1441,15 @@ def __source_heat_to_discharge_path_constraints(self, ensemble_member):
f"{sup_carrier}_{supply_temperature}"
)

heat_out_expected = discharge * cp * rho * supply_temperature
if (0.0 < parameters[f"{s}.max_temperature"]) and (
parameters[f"{s}.max_temperature"] < supply_temperature
):
heat_out_expected = 0.0

constraints.extend(
self._symmetric_big_m_constraints(
heat_out - discharge * cp * rho * supply_temperature,
heat_out - heat_out_expected,
(1.0 - sup_temperature_is_selected) * big_m,
constraint_nominal,
)
Expand Down
157 changes: 157 additions & 0 deletions tests/models/unit_cases/case_1a/model/1a_with_2producers_and_supply_temperature_options.esdl
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Original file line number Diff line number Diff line change
@@ -0,0 +1,157 @@
<?xml version='1.0' encoding='UTF-8'?>
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53 changes: 53 additions & 0 deletions tests/models/unit_cases/case_1a/src/run_1a.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
from mesido.esdl.profile_parser import ProfileReaderFromFile
from mesido.physics_mixin import PhysicsMixin
from mesido.qth_not_maintained.qth_mixin import QTHMixin
from mesido.techno_economic_mixin import TechnoEconomicMixin

import numpy as np

Expand Down Expand Up @@ -100,6 +101,58 @@ def constraints(self, ensemble_member):
return constraints


class HeatProblemTvarWithTechnoEconomicMixin(HeatProblemTvar, TechnoEconomicMixin):

def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.base_carrier_name = "Heat"
self.base_carrier_id = self._get_id_from_carrier_name(self.base_carrier_name)

def temperature_regimes(self, carrier):
temperatures = []
if carrier == self.base_carrier_id:
temperatures = self._get_related_carrier_temperatures(self.base_carrier_name)
return temperatures

def _get_id_from_carrier_name(self, carrier_name: str):
"""
Return the id of the carrier with the given name.

Parameters
----------
carrier_name : Name of the carrier for which the id is requested.
"""

return next(
(
carrier.get("id")
for carrier in self.esdl_carriers.values()
if carrier.get("name") == carrier_name
),
None,
)

def _get_related_carrier_temperatures(self, carrier_name: str):
"""
Return the sorted temperatures of carriers related to the given carrier name.

A carrier is considered related if its name starts with ``<carrier_name>_``
followed by a numeric suffix, for example ``Heat_70`` or ``Heat_90``.

Parameters
----------
carrier_name : Base name of the carrier group.
"""

return sorted(
carrier["temperature"]
for carrier in self.esdl_carriers.values()
if carrier_name
and carrier.get("name", "").startswith(f"{carrier_name}_")
and carrier["name"][len(f"{carrier_name}_") :].isdigit()
)


class QTHProblem(
_GoalsAndOptions,
QTHMixin,
Expand Down
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