Geothermal¶

Geothermal power model for hydrothermal and EGS systems with flash or binary conversion

PySAM.Geothermal.default(config) → Geothermal¶

Load defaults for the configuration config. Available configurations are:

Note

Some inputs do not have default values and may be assigned a value from the variable’s Required attribute. See variable attribute descriptions below.

PySAM.Geothermal.from_existing(data, optional config) → Geothermal¶: Share data with an existing PySAM class. If optional config is a valid configuration name, load the module’s defaults for that configuration.

PySAM.Geothermal.new() → Geothermal¶

PySAM.Geothermal.wrap(ssc_data_t) → Geothermal¶: Load data from a PySSC object.

Warning

Do not call PySSC.data_free on the ssc_data_t provided to wrap()

Geothermal is a wrapper for the SSC compute module cmod_geothermal.cpp

Interdependent Variables¶

The variables listed below are interdependent with other variables. If you change the value of one of these variables, you may need to change values of other variables. The SAM user interface manages these interdependent variables, but in PySAM, it is up to you change the value of all interdependent variables so they are consistent. See Interdependent Variables for examples and details.

Functions¶

class PySAM.Geothermal.Geothermal¶

This class contains all the variable information for running a simulation. Variables are grouped together in the subclasses as properties. If property assignments are the wrong type, an error is thrown.

assign(dict) → None¶

Assign attributes from nested dictionary, except for Outputs

nested_dict = { 'GeoHourly': { var: val, ...}, ...}

execute(int verbosity) → None¶: Execute simulation with verbosity level 0 (default) or 1

export() → dict¶: Export attributes into nested dictionary

replace(dict) → None¶

Replace attributes from nested dictionary, except for Outputs. Unassigns all values in each Group then assigns from the input dict.

nested_dict = { 'GeoHourly': { var: val, ...}, ...}

unassign(name) → None¶: Unassign a value in any of the variable groups.

value(name, optional value) → Union[None, float, dict, sequence, str]¶: Get or set by name a value in any of the variable groups.

GeoHourly Group¶

class PySAM.Geothermal.Geothermal.GeoHourly¶

assign(dict) → None¶

Assign attributes from dictionary, overwriting but not removing values.

GeoHourly_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary.

replace(dict) → None¶

Replace attributes from dictionary, unassigning values not present in input dict.

GeoHourly_vals = { var: val, ...}

CT¶

Condenser type (Wet, Dry,Hybrid) [(1-3)]

Constraints: INTEGER

Required: Required if ui_calculations_only=0

Type:	float

HTF¶

Heat trans fluid type ID [(1-27)]

Constraints: INTEGER

Required: Required if ui_calculations_only=0

Type:	float

P_boil¶

Design Boiler Pressure [bar]

Required: Required if ui_calculations_only=0

Type:	float

P_cond_min¶

Minimum condenser pressure [in Hg]

Required: Required if ui_calculations_only=0

Type:	float

P_cond_ratio¶

Condenser pressure ratio

Required: Required if ui_calculations_only=0

Type:	float

T_ITD_des¶

Design ITD for dry system [C]

Required: Required if ui_calculations_only=0

Type:	float

T_amb_des¶

Design ambient temperature [C]

Required: Required if ui_calculations_only=0

Type:	float

T_approach¶

Approach Temperature [C]

Required: Required if ui_calculations_only=0

Type:	float

T_htf_cold_ref¶

Outlet design temp [C]

Required: Required if ui_calculations_only=0

Type:	float

T_htf_hot_ref¶

Inlet design temp [C]

Required: Required if ui_calculations_only=0

The value of T_htf_hot_ref depends on the following variables:

Type:	float

ambient_pressure¶

Ambient pressure [psi]

Required: True

The value of the following variables depends on ambient_pressure:

Type:	float

analysis_type¶

Analysis Type

Constraints: INTEGER

Required: True

The value of the following variables depends on analysis_type:

Type:	float

casing_size¶

Production pump casing size [in]

Required: True

The value of the following variables depends on casing_size:

Type:	float

conversion_subtype¶

Conversion Subtype

Constraints: INTEGER

Required: True

The value of the following variables depends on conversion_subtype:

Type:	float

conversion_type¶

Conversion Type

Constraints: INTEGER

Required: True

The value of the following variables depends on conversion_type:

Type:	float

dT_cw_ref¶

Design condenser cooling water inlet/outlet T diff [C]

Required: Required if ui_calculations_only=0

Type:	float

decline_type¶

Temp decline Type

Constraints: INTEGER

Required: True

The value of the following variables depends on decline_type:

Type:	float

delta_pressure_equip¶

Delta pressure across surface equipment [psi]

Required: True

The value of the following variables depends on delta_pressure_equip:

Type:	float

design_temp¶

Power block design temperature [C]

Required: True

The value of the following variables depends on design_temp:

The value of design_temp depends on the following variables:

Type:	float

dt_prod_well¶

Temperature loss in production well [C]

Required: True

The value of the following variables depends on dt_prod_well:

Type:	float

eta_ref¶

Desgin conversion efficiency [%]

Required: Required if ui_calculations_only=0

Type:	float

excess_pressure_pump¶

Excess pressure @ pump suction [psi]

Required: True

The value of the following variables depends on excess_pressure_pump:

Type:	float

file_name¶

local weather file path

Constraints: LOCAL_FILE

Required: Required if ui_calculations_only=0

Type:	str

fracture_angle¶

Fracture angle [deg]

Required: True

The value of the following variables depends on fracture_angle:

Type:	float

fracture_aperature¶

Fracture aperature [m]

Required: True

The value of the following variables depends on fracture_aperature:

Type:	float

fracture_length¶

Fracture length [m]

Required: True

The value of the following variables depends on fracture_length:

Type:	float

fracture_spacing¶

Fracture spacing [m]

Required: True

The value of the following variables depends on fracture_spacing:

Type:	float

fracture_width¶

Fracture width [m]

Required: True

The value of the following variables depends on fracture_width:

Type:	float

geotherm_cost_inj_cost_curve_welltype¶

Injection well type [0/1]

Required: True

Type:	float

geotherm_cost_inj_prod_well_ratio¶

Ratio of injection wells to production wells

Type:	float

geotherm_cost_prod_cost_curve_welltype¶

Production well type [0/1]

Required: True

Type:	float

geothermal_analysis_period¶

Analysis Lifetime [years]

Constraints: INTEGER

Required: True

The value of the following variables depends on geothermal_analysis_period:

Type:	float

hc_ctl1¶

HC Control 1

Required: Required if ui_calculations_only=0

Type:	float

hc_ctl2¶

HC Control 2

Required: Required if ui_calculations_only=0

Type:	float

hc_ctl3¶

HC Control 3

Required: Required if ui_calculations_only=0

Type:	float

hc_ctl4¶

HC Control 4

Required: Required if ui_calculations_only=0

Type:	float

hc_ctl5¶

HC Control 5

Required: Required if ui_calculations_only=0

Type:	float

hc_ctl6¶

HC Control 6

Required: Required if ui_calculations_only=0

Type:	float

hc_ctl7¶

HC Control 7

Required: Required if ui_calculations_only=0

Type:	float

hc_ctl8¶

HC Control 8

Required: Required if ui_calculations_only=0

Type:	float

hc_ctl9¶

HC Control 9

Required: Required if ui_calculations_only=0

Type:	float

hr_pl_nlev¶

# part-load increments [(0-9)]

Constraints: INTEGER

Required: Required if ui_calculations_only=0

The value of the following variables depends on hr_pl_nlev:

Type:	float

hybrid_dispatch_schedule¶

Daily dispatch schedule

Constraints: TOUSCHED

Required: Required if ui_calculations_only=0

Type:	str

inj_casing_size¶

Injection pump casing size [in]

Required: True

The value of the following variables depends on inj_casing_size:

Type:	float

inj_prod_well_distance¶

Distance from injection to production wells [m]

Required: True

The value of the following variables depends on inj_prod_well_distance:

Type:	float

inj_well_diam¶

Injection well diameter [in]

Required: True

The value of the following variables depends on inj_well_diam:

Type:	float

model_choice¶

Which model to run (0,1,2)

Constraints: INTEGER

Required: True

The value of the following variables depends on model_choice:

Type:	float

nameplate¶

Desired plant output [kW]

Required: True

The value of the following variables depends on nameplate:

Type:	float

num_fractures¶

Number of fractures

Constraints: INTEGER

Required: True

The value of the following variables depends on num_fractures:

Type:	float

num_wells¶

Number of Wells

Required: True

The value of the following variables depends on num_wells:

Type:	float

num_wells_getem¶

Number of Wells GETEM calc’d

Required: Required if ui_calculations_only=0

The value of num_wells_getem depends on the following variables:

Type:	float

pb_bd_frac¶

Blowdown steam fraction [%]

Required: Required if ui_calculations_only=0

Type:	float

plant_efficiency_input¶

Plant efficiency

Required: True

The value of the following variables depends on plant_efficiency_input:

Type:	float

prod_well_choice¶

Temperature loss in production well choice [0/1]

Required: True

The value of the following variables depends on prod_well_choice:

Type:	float

pump_efficiency¶

Pump efficiency [%]

Required: True

The value of the following variables depends on pump_efficiency:

Type:	float

q_sby_frac¶

% thermal power for standby mode [%]

Required: Required if ui_calculations_only=0

Type:	float

reservoir_height¶

Reservoir height [m]

Required: True

The value of the following variables depends on reservoir_height:

Type:	float

reservoir_model_inputs¶

Reservoir temperatures over time

Required: Required if reservoir_pressure_change_type=3

The value of the following variables depends on reservoir_model_inputs:

Type:	sequence[sequence]

reservoir_permeability¶

Reservoir Permeability [darcys]

Required: True

The value of the following variables depends on reservoir_permeability:

Type:	float

reservoir_pressure_change¶

Pressure change [psi-h/1000lb]

Required: True

The value of the following variables depends on reservoir_pressure_change:

Type:	float

reservoir_pressure_change_type¶

Reservoir pressure change type

Constraints: INTEGER

Required: True

The value of the following variables depends on reservoir_pressure_change_type:

Type:	float

reservoir_width¶

Reservoir width [m]

Required: True

The value of the following variables depends on reservoir_width:

Type:	float

resource_depth¶

Resource Depth [m]

Required: True

The value of the following variables depends on resource_depth:

Type:	float

resource_potential¶

Resource Potential [MW]

Required: Required if ui_calculations_only=0

Type:	float

resource_temp¶

Resource Temperature [C]

Required: True

The value of the following variables depends on resource_temp:

Type:	float

resource_type¶

Type of Resource

Constraints: INTEGER

Required: True

The value of the following variables depends on resource_type:

Type:	float

rock_density¶

Rock density [kg/m^3]

Required: True

The value of the following variables depends on rock_density:

Type:	float

rock_specific_heat¶

Rock specific heat [J/kg-C]

Required: True

The value of the following variables depends on rock_specific_heat:

Type:	float

rock_thermal_conductivity¶

Rock thermal conductivity [J/m-day-C]

Required: True

The value of the following variables depends on rock_thermal_conductivity:

Type:	float

specified_pump_work_amount¶

Pump work specified by user [MW]

Required: True

The value of the following variables depends on specified_pump_work_amount:

Type:	float

specify_pump_work¶

Did user specify pump work? [0 or 1]

Constraints: INTEGER

Required: True

The value of the following variables depends on specify_pump_work:

Type:	float

startup_frac¶

% thermal power for startup [%]

Required: Required if ui_calculations_only=0

Type:	float

startup_time¶

Hours to start power block [hours]

Required: Required if ui_calculations_only=0

Type:	float

subsurface_water_loss¶

Subsurface water loss [%]

Required: True

The value of the following variables depends on subsurface_water_loss:

Type:	float

system_use_lifetime_output¶

Geothermal lifetime simulation [0/1]

Options: 0=SingleYearRepeated,1=RunEveryYear

Constraints: BOOLEAN

Required: False. Automatically set to 0 if not assigned explicitly or loaded from defaults.

Type:	float

temp_decline_max¶

Maximum temperature decline [C]

Required: True

The value of the following variables depends on temp_decline_max:

Type:	float

temp_decline_rate¶

Temperature decline rate [%/yr]

Required: True

The value of the following variables depends on temp_decline_rate:

Type:	float

ui_calculations_only¶

If = 1, only run UI calculations

Required: True

Type:	float

well_diameter¶

Production well diameter [in]

Required: True

The value of the following variables depends on well_diameter:

Type:	float

well_flow_rate¶

Production flow rate per well [kg/s]

Required: True

The value of the following variables depends on well_flow_rate:

Type:	float

wet_bulb_temp¶

Wet Bulb Temperature [C]

Required: True

The value of the following variables depends on wet_bulb_temp:

Type:	float

AdjustmentFactors Group¶

class PySAM.Geothermal.Geothermal.AdjustmentFactors¶

assign() → None¶: Assign attributes from dictionary

export() → Dict¶: Export attributes into dictionary

constant¶

float

Type:	type

dc_constant¶: DC Constant loss adjustment [%]

dc_hourly¶: DC Hourly Adjustment Factors [%]

dc_periods¶: DC Period-based Adjustment Factors [%]

hourly¶: AC Hourly Adjustment Factors [%]

periods¶: AC Period-based Adjustment Factors [%]

sf_constant¶: DC Constant loss adjustment [%]

sf_hourly¶: DC Hourly Adjustment Factors [%]

sf_periods¶: DC Period-based Adjustment Factors [%]

Outputs Group¶

class PySAM.Geothermal.Geothermal.Outputs¶

assign(dict) → None¶

Assign attributes from dictionary, overwriting but not removing values.

Outputs_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary.

replace(dict) → None¶

Replace attributes from dictionary, unassigning values not present in input dict.

Outputs_vals = { var: val, ...}

GF_flowrate¶

GF Flow Rate [lb/h]

Type:	float

annual_energy¶

Annual Energy [kWh]

Type:	float

annual_energy_distribution_time¶

Annual energy production as function of Time

Type:	sequence[sequence]

bottom_hole_pressure¶

Bottom hole pres calculated by GETEM

Type:	float

capacity_factor¶

Capacity factor

Type:	float

condensate_pump_power¶

hp

Type:	float

cw_pump_head¶

Cooling Water Pump Head [lb/h]

Type:	float

cw_pump_work¶

CW Pump Work [kW]

Type:	float

cwflow¶

Cooling Water Flow [lb/h]

Type:	float

eff_secondlaw¶

Second Law Efficiency [C]

Type:	float

first_year_output¶

First Year Output [kWh]

Type:	float

flash_count¶

Flash Count [(1 -2)]

Type:	float

gen¶

System power generated [kW]

Type:	sequence

gross_cost_output¶

Gross output from GETEM for cost

Type:	float

gross_output¶

Gross output from GETEM

Type:	float

hp_flash_pressure¶

HP Flash Pressure [psia]

Type:	float

inj_pump_hp¶

Injection Pump horsepower [hp]

Type:	float

kwh_per_kw¶

First year kWh/kW

Type:	float

lifetime_output¶

Lifetime Output [kWh]

Type:	float

lp_flash_pressure¶

LP Flash Pressure [psia]

Type:	float

monthly_energy¶

Monthly energy before performance adjustments [kWh]

Type:	sequence

monthly_power¶

Monthly power [kW]

Type:	sequence

monthly_resource_temperature¶

Monthly avg resource temperature [C]

Type:	sequence

ncg_condensate_pump¶

Condensate Pump Work [kW]

Type:	float

num_wells_getem_inj¶

Number of wells calculated by GETEM

Type:	float

num_wells_getem_output¶

Number of wells calculated by GETEM

Type:	float

plant_brine_eff¶

Plant Brine Efficiency

Type:	float

pressure_ratio_1¶

Suction Steam Ratio 1

Type:	float

pressure_ratio_2¶

Suction Steam Ratio 2

Type:	float

pressure_ratio_3¶

Suction Steam Ratio 3

Type:	float

pump_depth_ft¶

Pump depth calculated by GETEM [ft]

Type:	float

pump_hp¶

Pump hp calculated by GETEM [hp]

Type:	float

pump_watthr_per_lb¶

Pump work Efficiency

Type:	float

pump_work¶

Pump work calculated by GETEM [MW]

Type:	float

pumpwork_inj¶

Injection Pump work Efficiency

Type:	float

pumpwork_prod¶

Production Pump work Efficiency

Type:	float

qCondenser¶

Condenser Heat Rejected [btu/h]

Type:	float

qRejectByStage_1¶

Heat Rejected by NCG Condenser Stage 1 [BTU/h]

Type:	float

qRejectByStage_2¶

Heat Rejected by NCG Condenser Stage 2 [BTU/h]

Type:	float

qRejectByStage_3¶

Heat Rejected by NCG Condenser Stage 3 [BTU/h]

Type:	float

qRejectTotal¶

Total Heat Rejection [btu/h]

Type:	float

reservoir_avg_temp¶

Avg reservoir temp calculated by GETEM [C]

Type:	float

reservoir_pressure¶

Reservoir pres calculated by GETEM

Type:	float

spec_vol¶

HP Specific Volume [cft/lb]

Type:	float

spec_vol_lp¶

LP Specific Volume [cft/lb]

Type:	float

system_lifetime_recapitalize¶

Resource replacement? (1=yes)

Type:	sequence

timestep_dry_bulb¶

Dry bulb temperature [C]

Type:	sequence

timestep_pressure¶

Atmospheric pressure [atm]

Type:	sequence

timestep_resource_temperature¶

Resource temperature [C]

Type:	sequence

timestep_test_values¶

Test output values in each time step

Type:	sequence

timestep_wet_bulb¶

Wet bulb temperature [C]

Type:	sequence

v_stage_1¶

Vacumm Pump Stage 1 [kW]

Type:	float

v_stage_2¶

Vacumm Pump Stage 2 [kW]

Type:	float

v_stage_3¶

Vacumm Pump Stage 3 [kW]

Type:	float

x_hp¶

HP Mass Fraction [%]

Type:	float

x_lp¶

LP Mass Fraction [%]

Type:	float