add heat vent

config/config.default.yaml

@@ -451,6 +451,7 @@ sector:
   coal_cc: false
   dac: true
   co2_vent: false
+  central_heat_vent: false
   allam_cycle: false
   hydrogen_fuel_cell: true
   hydrogen_turbine: false
@@ -878,6 +879,7 @@ plotting:
     services rural heat: '#ff9c9c'
     central heat: '#cc1f1f'
     urban central heat: '#d15959'
+    urban central heat vent: '#a74747'
     decentral heat: '#750606'
     residential urban decentral heat: '#a33c3c'
     services urban decentral heat: '#cc1f1f'

config/config.perfect.yaml

@@ -39,5 +39,6 @@ co2_budget:
 
 
 sector:
-  min_part_load_fischer_tropsch: 0
+  central_heat_vent: true
+  # min_part_load_fischer_tropsch: 0
   min_part_load_methanolisation: 0

config/test/config.perfect.yaml

@@ -42,7 +42,8 @@ electricity:
   renewable_carriers: [solar, onwind, offwind-ac, offwind-dc]
 
 sector:
-  min_part_load_fischer_tropsch: 0
+  central_heat_vent: true
+  # min_part_load_fischer_tropsch: 0
   min_part_load_methanolisation: 0
 atlite:
   default_cutout: be-03-2013-era5

scripts/prepare_sector_network.py

@@ -1692,7 +1692,19 @@ def add_heat(n, costs):
             carrier=name + " heat",
             unit="MWh_th",
         )
-
+        
+        if (name == "urban central") & (options["central_heat_vent"]):
+            n.madd(
+                "Generator",
+                nodes[name] + f" {name} heat vent",
+                location=nodes[name],
+                carrier=name + " heat vent",
+                p_nom_extendable=True,
+                p_max_pu=0,
+                p_min_pu=-1,
+                unit="MWh_th",
+            )
+           
         ## Add heat load
 
         for sector in sectors:
@@ -3290,7 +3302,6 @@ def set_temporal_aggregation(n, opts, solver_name):
             break
     return n
 
-
 if __name__ == "__main__":
     if "snakemake" not in globals():
         from _helpers import mock_snakemake