default_values
Default values for functions
- A0 = 1200000.0
First parameter of the characteristic curve (Pa)
- A1 = 0.0
Second parameter of the characteristic curve (Pa·s/kg)
- A2 = 0.0
Third parameter of the characteristic curve (Pa·s²/kg²)
- BYPASS_CASING_THICKNESS = 0.0054
Thickness of external pipe casing (m)
- BYPASS_INSULATION_THICKNESS = 0.031
Thickness of insulation (m)
- CASING_THICKNESS = 0.003
Default thickness of pipe external casing (m)
- CONTROL_TYPE_CONS = 'energy'
Default values for heat exchangers
- CP_FLUID = 4182.0
Default specific heat capacity of generic fluid (J/(kg·K))
- CP_INTERNAL_PIPE = 2000.0
Default specific heat capacity of inner pipe (J/(kg·K))
- CP_WATER = 4182.0
Default specific heat capacity of water (J/(kg·K))
- DELTA_P = 0.0
Initial edges pressure difference (Pa)
- DELTA_P_FRICTION = 0.0
Initial pressure difference due to friction (Pa)
- DELTA_Z = 0.0
Default altitude difference between the ends of a pipe (m)
- DEPTH = 1.0
Default burying depth of a pipe measured at the center (m)
- DISCRETIZATION = 10
Default length (m) of segments used to discretize the pipes
- DT_DESIGN = -30.0
Design temperature difference between outlet and inlet (°C)
- D_BYPASS = 0.0372
Internal diameter (m)
- D_HX = 0.02
Internal diameter (m)
- D_PIPES = 0.0204
Default value for internal pipe diameter (m)
- HEAT_DEMAND = 5000.0
Default hourly heat demand of consumers (Wh)
- H_EXT = 0.0
Default values for consumers
- INLET_TEMPERATURE = 50.0
Initial edges inlet temperature (°C)
- INSULATION_THICKNESS = 0.034
Default thickness of insulation in pipes (m)
- INTERNAL_BYPASS_THICKNESS = 0.0052
Thickness of internal pipe (m)
- INTERNAL_PIPE_THICKNESS = 0.023
Default thickness of inner pipe (m)
- K2 = 0.0
Default values for pipes
- KV = 0.0
Default valve Kv [m³/h]
- KV_MIN = 1e-08
Other
- K_CASING = 0.4
Default thermal conductivity of pipe external casing (W/(m·K))
- K_FLUID = 0.598
Default values for edges
- K_INSULATION = 0.026
Default hermal conductivity of insulation in pipes (W/(m·K))
- K_INTERNAL_PIPE = 45.0
Default thermal conductivity of inner pipe (W/(m·K))
- K_SOIL = 0.5
Thermal conductivity (W/m·K)
- K_WATER = 0.598
Default values of fluid properties, same as water
- L_BYPASS_PIPES = 1.0
Default values of soil properties
- L_PIPES = 1.0
Default ength of pipes (m)
- MASS_FLOW = 1e-05
Initial edges mass flow (kg/s)
- MASS_FLOW_MIN_CONS = 1e-06
Default minimum mass flow through a substation (kg/s)
- MU_FLUID = 0.0004
Default dynamic viscosity of generic fluid (Pa·s)
- MU_WATER = 0.0004
Default dynamic viscosity of water (Pa·s)
- OUTLET_TEMPERATURE = 50.0
Initial edges outlet temperature (°C)
- POWER_MAX_HX = nan
Maximum power that can be exchanged (W)
- RHO_FLUID = 990.0
Default density of generic fluid (kg/m³)
- RHO_INTERNAL_PIPE = 940.0
Default density of inner pipe material (kg/m³)
- RHO_WATER = 990.0
Default density of water (kg/m³)
- ROUGHNESS = 0.045
Default roughness of pipe internal surface (mm)
- RPM = 2500.0
Rotational speed (1/min)
- RPM_MAX = 5000.0
Valves
- SETPOINT_TYPE_HX = 'delta_t'
Functioning of the heat exchanger. Possible options include “delta_t”, “delta_q” and “t_out”
- SETPOINT_TYPE_HX_CONS = 'delta_t'
Default consumers thermal setpoint type in case of forward flow
- SETPOINT_TYPE_HX_CONS_REV = 'delta_t'
Default consumers thermal setpoint type in case of reverse flow
- SETPOINT_TYPE_HX_PROD = 't_out'
Functioning of the heat exchanger
- SETPOINT_TYPE_HX_PROD_REV = 'delta_t'
Functioning of the heat exchanger
- SETPOINT_TYPE_HX_REV = 'delta_t'
Functioning of the heat exchanger in case of reverse flow. Possible options include “delta_t”, “delta_q” and “t_out”
- SETPOINT_TYPE_HYD_CONS = 'mass_flow'
Default consumers hydraulic setpoint type
- SETPOINT_TYPE_HYD_PROD = 'pressure'
Either ‘pressure’ or ‘mass_flow’
- SETPOINT_VALUE_HX = -30.0
Setpoint delta_t (°C), delta_q (Wh) or t_out (°C)
- SETPOINT_VALUE_HX_CONS = -30.0
Default consumers thermal setpoint value in case of forward flow (K)
- SETPOINT_VALUE_HX_CONS_REV = 0.0
Default consumers thermal setpoint value in case of reverse flow (K)
- SETPOINT_VALUE_HX_PROD = 80.0
Supply temperature (°C)
- SETPOINT_VALUE_HX_PROD_REV = 0.0
Setpoint in case of reverse flow
- SETPOINT_VALUE_HX_REV = 0.0
Setpoint in case of reverse flow
- SETPOINT_VALUE_HYD_CONS = 1e-06
Default consumers hydraulic setpoint value (kg/s)
- SETPOINT_VALUE_HYD_PROD = -1000000.0
Desired pressure lift (Pa) at producers of setpoint type ‘pressure’
- STATIC_PRESSURE = nan
Default values for bypass pipes
- STEPSIZE = 5.0
Size of a time-step in dynamic simulations (s)
- TEMPERATURE = 50.0
Initial edges temperature (°C)
- T_OUT_MIN = nan
Minimum outlet temperature (°C)
- T_SECONDARY = 0.0
Default values for producers
- T_SOIL = 8.0
Default values of CitySim