TcsmoltenSalt¶

Wrapper for SAM Simulation Core model: cmod_tcsmolten_salt.cpp

Input Consistency Warning¶

As described in Possible Problems, some input parameters are interdepedent but the equations accounting for these interdependencies that enforce consistency among these input parameters are not available in the PySAM module. Therefore, the onus is on the PySAM user to check that interdependencies are correctly handled. The variables which may require additional logic include:

D_rec

P_ref

T_htf_cold_des

T_htf_hot_des

aux_par

aux_par_0

aux_par_1

aux_par_2

aux_par_f

bop_par

bop_par_0

bop_par_1

bop_par_2

bop_par_f

bop_spec_cost

c_atm_0

c_atm_1

c_atm_2

c_atm_3

const_per_interest_rate1

const_per_interest_rate2

const_per_interest_rate3

const_per_interest_rate4

const_per_interest_rate5

const_per_months1

const_per_months2

const_per_months3

const_per_months4

const_per_months5

const_per_percent1

const_per_percent2

const_per_percent3

const_per_percent4

const_per_percent5

const_per_upfront_rate1

const_per_upfront_rate2

const_per_upfront_rate3

const_per_upfront_rate4

const_per_upfront_rate5

contingency_rate

cost_sf_fixed

dens_mirror

design_eff

dni_des

field_fl_props

field_model_type

fossil_spec_cost

gross_net_conversion_factor

h_tower

helio_area_tot

helio_height

helio_optical_error_mrad

helio_positions

helio_width

heliostat_spec_cost

is_dispatch

is_wlim_series

land_area_base

land_max

land_min

land_spec_cost

opt_algorithm

opt_flux_penalty

piping_length_const

piping_length_mult

piping_loss

plant_spec_cost

rec_cost_exp

rec_height

rec_htf

rec_ref_area

rec_ref_cost

sales_tax_frac

sales_tax_rate

site_spec_cost

solarm

tes_spec_cost

tower_exp

tower_fixed_cost

tshours

wlim_series

Provided for each of these inputs is a list of other inputs that are potentially interdependent.

Creating an Instance¶

Refer to the Initializing a Model page for details on the different ways to create an instance of a PySAM class.

TcsmoltenSalt model description

CSP molten salt power tower for power generation

PySAM.TcsmoltenSalt.default(config) → TcsmoltenSalt¶

Use default attributes config options:

“MSPTAllEquityPartnershipFlip”
“MSPTLeveragedPartnershipFlip”
“MSPTMerchantPlant”
“MSPTSaleLeaseback”
“MSPTSingleOwner”

PySAM.TcsmoltenSalt.from_existing(data, optional config) → TcsmoltenSalt¶: Share underlying data with an existing PySAM class. If config provided, default attributes are loaded otherwise.

PySAM.TcsmoltenSalt.new() → TcsmoltenSalt¶

PySAM.TcsmoltenSalt.wrap(ssc_data_t) → TcsmoltenSalt¶: Use existing PySSC data

Warning

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

Functions¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt¶

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 = { 'Solar Resource': { var: val, ...}, ...}

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

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

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

SolarResource Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.SolarResource¶

assign() → None¶

Assign attributes from dictionary

SolarResource_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

solar_resource_data¶

Weather resource data in memory

Required: False

Type:	dict

solar_resource_file¶

Local weather file path

Constraints: LOCAL_FILE

Required: False

Type:	str

TimeOfDeliveryFactors Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.TimeOfDeliveryFactors¶

assign() → None¶

Assign attributes from dictionary

TimeOfDeliveryFactors_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

dispatch_factor1¶

Dispatch payment factor 1

Required: If not provided, assumed to be 1

Type:	float

dispatch_factor2¶

Dispatch payment factor 2

Required: If not provided, assumed to be 1

Type:	float

dispatch_factor3¶

Dispatch payment factor 3

Required: If not provided, assumed to be 1

Type:	float

dispatch_factor4¶

Dispatch payment factor 4

Required: If not provided, assumed to be 1

Type:	float

dispatch_factor5¶

Dispatch payment factor 5

Required: If not provided, assumed to be 1

Type:	float

dispatch_factor6¶

Dispatch payment factor 6

Required: If not provided, assumed to be 1

Type:	float

dispatch_factor7¶

Dispatch payment factor 7

Required: If not provided, assumed to be 1

Type:	float

dispatch_factor8¶

Dispatch payment factor 8

Required: If not provided, assumed to be 1

Type:	float

dispatch_factor9¶

Dispatch payment factor 9

Required: If not provided, assumed to be 1

Type:	float

dispatch_factors_ts¶

Dispatch payment factor array

Required: True if ppa_multiplier_model=1

Type:	sequence

dispatch_sched_weekday¶

PPA pricing weekday schedule, 12x24

Required: If not provided, assumed to be [[1]]

Type:	sequence[sequence]

dispatch_sched_weekend¶

PPA pricing weekend schedule, 12x24

Required: If not provided, assumed to be [[1]]

Type:	sequence[sequence]

ppa_multiplier_model¶

PPA multiplier model [0/1]

Options: 0=diurnal,1=timestep

Constraints: INTEGER,MIN=0

Required: If not provided, assumed to be 0

Type:	float

HeliostatField Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.HeliostatField¶

assign() → None¶

Assign attributes from dictionary

HeliostatField_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

A_sf_in¶

Solar field area [m^2]

Type:	float

N_hel¶

Number of heliostats

Type:	float

c_atm_0¶

Attenuation coefficient 0

Required: If not provided, assumed to be 0.006789

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

c_atm_1¶

Attenuation coefficient 1

Required: If not provided, assumed to be 0.1046

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

c_atm_2¶

Attenuation coefficient 2

Required: If not provided, assumed to be -0.0107

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

c_atm_3¶

Attenuation coefficient 3

Required: If not provided, assumed to be 0.002845

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

calc_fluxmaps¶

Include fluxmap calculations

Required: If not provided, assumed to be 0

Type:	float

cant_type¶

Heliostat canting method

Required: True

Type:	float

check_max_flux¶

Check max flux at design point

Required: If not provided, assumed to be 0

Type:	float

csp_pt_sf_fixed_land_area¶

Fixed land area [acre]

Required: True

Type:	float

csp_pt_sf_land_overhead_factor¶

Land overhead factor

Required: True

Type:	float

dens_mirror¶

Ratio of heliostat reflective area to profile

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

eta_map¶

Field efficiency array

Required: False

Type:	sequence[sequence]

eta_map_aod_format¶

Use 3D AOD format field efficiency array

Info: heliostat

Type:	float

field_model_type¶

0=design field and tower/receiver geometry, 1=design field, 2=user specified field, 3=user performance maps vs solar position

Required: True

This variable may need to be updated if the values of the following have changed:

P_ref
c_atm_0
c_atm_1
c_atm_2
c_atm_3
dens_mirror
design_eff
dni_des
gross_net_conversion_factor
h_tower
helio_height
helio_optical_error_mrad
helio_positions
helio_width
land_area_base
land_max
land_min
solarm
tshours

Type:	float

flux_maps¶

Flux map intensities

Required: False

Type:	sequence[sequence]

focus_type¶

Heliostat focus method

Required: True

Type:	float

hel_stow_deploy¶

Stow/deploy elevation angle [deg]

Required: True

Type:	float

helio_active_fraction¶

Heliostat active fraction

Required: True

Type:	float

helio_aim_points¶

Heliostat aim point table [m]

Required: False

Type:	sequence[sequence]

helio_height¶

Heliostat height [m]

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

helio_optical_error_mrad¶

Heliostat optical error [mrad]

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

helio_positions¶

Heliostat position table

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	sequence[sequence]

helio_reflectance¶

Heliostat reflectance

Required: True

Type:	float

helio_width¶

Heliostat width [m]

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

interp_beta¶

Interpolation beta coef. [-]

Required: If not provided, assumed to be 1.99

Type:	float

interp_nug¶

Interpolation nugget [-]

Required: If not provided, assumed to be 0

Type:	float

land_area_base¶

Base land area occupied by heliostats [acre]

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

land_bound_list¶

Land boundary table listing

Required: False

Type:	sequence

land_bound_table¶

Land boundary table [m]

Required: False

Type:	sequence[sequence]

land_max¶

Land max boundary [-ORm]

Required: If not provided, assumed to be 7.5

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

land_min¶

Land min boundary [-ORm]

Required: If not provided, assumed to be 0.75

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

n_facet_x¶

Number of heliostat facets - X

Required: True

Type:	float

n_facet_y¶

Number of heliostat facets - Y

Required: True

Type:	float

opt_algorithm¶

Optimization algorithm

Required: If not provided, assumed to be 0

This variable may need to be updated if the values of the following have changed:

P_ref
c_atm_0
c_atm_1
c_atm_2
c_atm_3
dens_mirror
design_eff
dni_des
gross_net_conversion_factor
h_tower
helio_height
helio_optical_error_mrad
helio_positions
helio_width
land_area_base
land_max
land_min
solarm
tshours

Type:	float

opt_conv_tol¶

Optimization convergence tolerance

Required: If not provided, assumed to be 0.001

Type:	float

opt_flux_penalty¶

Optimization flux overage penalty

Required: True

This variable may need to be updated if the values of the following have changed:

P_ref
c_atm_0
c_atm_1
c_atm_2
c_atm_3
dens_mirror
design_eff
dni_des
gross_net_conversion_factor
h_tower
helio_height
helio_optical_error_mrad
helio_positions
helio_width
land_area_base
land_max
land_min
solarm
tshours

Type:	float

opt_init_step¶

Optimization initial step size

Required: If not provided, assumed to be 0.05

Type:	float

opt_max_iter¶

Max number iteration steps

Required: If not provided, assumed to be 200

Type:	float

p_start¶

Heliostat startup energy [kWe-hr]

Required: True

Type:	float

p_track¶

Heliostat tracking energy [kWe]

Required: True

Type:	float

v_wind_max¶

Heliostat max wind velocity [m/s]

Required: True

Type:	float

washing_frequency¶

Mirror washing frequency [none]

Required: True

Type:	float

water_usage_per_wash¶

Water usage per wash [L/m2_aper]

Required: True

Type:	float

SystemDesign Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.SystemDesign¶

assign() → None¶

Assign attributes from dictionary

SystemDesign_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

P_ref¶

Reference output electric power at design condition [MW]

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty
wlim_series

Type:	float

T_htf_cold_des¶

Cold HTF inlet temperature at design conditions [C]

Required: True

Type:	float

T_htf_hot_des¶

Hot HTF outlet temperature at design conditions [C]

Required: True

Type:	float

design_eff¶

Power cycle efficiency at design [none]

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

dni_des¶

Design-point DNI [W/m2]

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

gross_net_conversion_factor¶

Estimated gross to net conversion factor

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

sf_excess¶

Heliostat field multiple

Required: If not provided, assumed to be 1.0

Type:	float

solarm¶

Solar multiple [-]

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

tshours¶

Equivalent full-load thermal storage hours [hr]

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

TowerAndReceiver Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.TowerAndReceiver¶

assign() → None¶

Assign attributes from dictionary

TowerAndReceiver_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

D_rec¶

The overall outer diameter of the receiver [m]

Required: True

Type:	float

Flow_type¶

see figure on SAM Receiver page

Required: True

Type:	float
Type:	Receiver flow pattern

N_panels¶

Number of individual panels on the receiver

Constraints: INTEGER

Required: True

Type:	float

crossover_shift¶

Number of panels shift in receiver crossover position

Required: If not provided, assumed to be 0

Type:	float

csp_pt_rec_max_oper_frac¶

Maximum receiver mass flow rate fraction

Required: True

Type:	float

d_tube_out¶

The outer diameter of an individual receiver tube [mm]

Required: True

Type:	float

delta_flux_hrs¶

Hourly frequency in flux map lookup

Required: If not provided, assumed to be 1

Type:	float

downc_tm_mult¶

Downcomer thermal mass multiplier

Required: If not provided, assumed to be 1.0

Type:	float

epsilon¶

The emissivity of the receiver surface coating

Required: True

Type:	float

eta_pump¶

Receiver HTF pump efficiency

Required: True

Type:	float

f_rec_min¶

Minimum receiver mass flow rate turn down fraction

Required: True

Type:	float

field_fl_props¶

User defined field fluid property data [-]

Required: True

Type:	sequence[sequence]

flux_max¶

Maximum allowable flux

Required: If not provided, assumed to be 1000

Type:	float

h_tower¶

Tower height [m]

Required: True

Changes to this variable may require updating the values of the following:

field_model_type
helio_area_tot
opt_algorithm
opt_flux_penalty

Type:	float

heat_trace_power¶

Riser/downcomer heat trace power during startup [kW/m]

Required: If not provided, assumed to be 500.0

Type:	float

hl_ffact¶

The heat loss factor (thermal loss fudge factor)

Required: True

Type:	float

is_rec_enforce_min_startup¶

Always enforce minimum startup time

Required: If not provided, assumed to be 1

Type:	float

is_rec_model_trans¶

Formulate receiver model as transient?

Required: If not provided, assumed to be 0

Type:	float

is_rec_startup_from_T_soln¶

Begin receiver startup from solved temperature profiles?

Required: If not provided, assumed to be 0

Type:	float

is_rec_startup_trans¶

Formulate receiver startup model as transient?

Required: If not provided, assumed to be 0

Type:	float

mat_tube¶

Receiver tube material, 2=Stainless AISI316

Required: True

Type:	float

min_fill_time¶

Startup time delay for filling the receiver/piping [hr]

Required: If not provided, assumed to be 0.1333

Type:	float

min_preheat_time¶

Minimum time required in preheat startup stage [hr]

Required: If not provided, assumed to be 0.0

Type:	float

n_flux_days¶

Number of days in flux map lookup

Required: If not provided, assumed to be 8

Type:	float

piping_length_const¶

Piping constant length [m]

Required: True

Type:	float

piping_length_mult¶

Piping length multiplier

Required: True

Type:	float

piping_loss¶

Thermal loss per meter of piping [Wt/m]

Required: True

Type:	float

preheat_flux¶

Tube absorbed solar flux during preheat [kW/m2]

Required: If not provided, assumed to be 50.0

Type:	float

rec_absorptance¶

Receiver absorptance

Required: True

Type:	float

rec_clearsky_dni¶

User-defined clear-sky DNI [W/m2]

Required: True if rec_clearsky_model=0

Type:	sequence

rec_clearsky_fraction¶

Weighting fraction on clear-sky DNI for receiver flow control

Required: If not provided, assumed to be 0.0

Type:	float

rec_clearsky_model¶

None = -1, User-defined data = 0, Meinel = 1; Hottel = 2; Allen = 3; Moon = 4

Required: If not provided, assumed to be -1

Type:	float
Type:	Clearsky model

rec_height¶

Receiver height [m]

Required: True

Type:	float

rec_hl_perm2¶

Receiver design heatloss [kW/m2]

Required: True

Type:	float

rec_htf¶

Receiver HTF, 17=Salt (60% NaNO3, 40% KNO3) 10=Salt (46.5% LiF 11.5% NaF 42% KF) 50=Lookup tables

Required: True

Type:	float

rec_qf_delay¶

Energy-based receiver startup delay (fraction of rated thermal power)

Required: True

Type:	float

rec_su_delay¶

Fixed startup delay time for the receiver [hr]

Required: True

Type:	float

rec_tm_mult¶

Receiver thermal mass multiplier

Required: If not provided, assumed to be 1.0

Type:	float

riser_tm_mult¶

Riser thermal mass multiplier

Required: If not provided, assumed to be 1.0

Type:	float

startup_ramp_time¶

Time required to reach full flux during receiver startup [hr]

Required: If not provided, assumed to be 0.1333

Type:	float

startup_target_Tdiff¶

Target HTF T at end of startup - steady state hot HTF temperature [C]

Required: If not provided, assumed to be -5.0

Type:	float

th_riser¶

Riser or downcomer tube wall thickness [mm]

Required: If not provided, assumed to be 15.0

Type:	float

th_tube¶

The wall thickness of a single receiver tube [mm]

Required: True

Type:	float

u_riser¶

Design point HTF velocity in riser [m/s]

Required: If not provided, assumed to be 4.0

Type:	float

SystemCosts Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.SystemCosts¶

assign() → None¶

Assign attributes from dictionary

SystemCosts_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

bop_spec_cost¶

BOS specific cost [$/kWe]

Required: True

Type:	float

contingency_rate¶

Contingency for cost overrun [%]

Required: True

Type:	float

cost_sf_fixed¶

Solar field fixed cost [$]

Required: True

Type:	float

csp_pt_cost_epc_fixed¶

EPC fixed [$]

Required: True

Type:	float

csp_pt_cost_epc_per_acre¶

EPC cost per acre [$/acre]

Required: True

Type:	float

csp_pt_cost_epc_per_watt¶

EPC cost per watt [$/W]

Required: True

Type:	float

csp_pt_cost_epc_percent¶

EPC cost percent of direct [%]

Required: True

Type:	float

csp_pt_cost_plm_fixed¶

PLM fixed [$]

Required: True

Type:	float

csp_pt_cost_plm_per_watt¶

PLM cost per watt [$/W]

Required: True

Type:	float

csp_pt_cost_plm_percent¶

PLM cost percent of direct [%]

Required: True

Type:	float

fossil_spec_cost¶

Fossil system specific cost [$/kWe]

Required: True

Type:	float

heliostat_spec_cost¶

Heliostat field cost [$/m2]

Required: True

Type:	float

land_spec_cost¶

Total land area cost [$/acre]

Required: True

Type:	float

plant_spec_cost¶

Power cycle specific cost [$/kWe]

Required: True

Type:	float

rec_cost_exp¶

Receiver cost scaling exponent

Required: True

Type:	float

rec_ref_area¶

Receiver reference area for cost scale

Required: True

Type:	float

rec_ref_cost¶

Receiver reference cost [$]

Required: True

Type:	float

sales_tax_frac¶

Percent of cost to which sales tax applies [%]

Required: True

Type:	float

site_spec_cost¶

Site improvement cost [$/m2]

Required: True

Type:	float

tes_spec_cost¶

Thermal energy storage cost [$/kWht]

Required: True

Type:	float

tower_exp¶

Tower cost scaling exponent

Required: True

Type:	float

tower_fixed_cost¶

Tower fixed cost [$]

Required: True

Type:	float

FinancialParameters Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.FinancialParameters¶

assign() → None¶

Assign attributes from dictionary

FinancialParameters_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

const_per_interest_rate1¶

Interest rate, loan 1 [%]

Required: True

Type:	float

const_per_interest_rate2¶

Interest rate, loan 2 [%]

Required: True

Type:	float

const_per_interest_rate3¶

Interest rate, loan 3 [%]

Required: True

Type:	float

const_per_interest_rate4¶

Interest rate, loan 4 [%]

Required: True

Type:	float

const_per_interest_rate5¶

Interest rate, loan 5 [%]

Required: True

Type:	float

const_per_months1¶

Months prior to operation, loan 1

Required: True

Type:	float

const_per_months2¶

Months prior to operation, loan 2

Required: True

Type:	float

const_per_months3¶

Months prior to operation, loan 3

Required: True

Type:	float

const_per_months4¶

Months prior to operation, loan 4

Required: True

Type:	float

const_per_months5¶

Months prior to operation, loan 5

Required: True

Type:	float

const_per_percent1¶

Percent of total installed cost, loan 1 [%]

Required: True

Type:	float

const_per_percent2¶

Percent of total installed cost, loan 2 [%]

Required: True

Type:	float

const_per_percent3¶

Percent of total installed cost, loan 3 [%]

Required: True

Type:	float

const_per_percent4¶

Percent of total installed cost, loan 4 [%]

Required: True

Type:	float

const_per_percent5¶

Percent of total installed cost, loan 5 [%]

Required: True

Type:	float

const_per_upfront_rate1¶

Upfront fee on principal, loan 1 [%]

Required: True

Type:	float

const_per_upfront_rate2¶

Upfront fee on principal, loan 2 [%]

Required: True

Type:	float

const_per_upfront_rate3¶

Upfront fee on principal, loan 3 [%]

Required: True

Type:	float

const_per_upfront_rate4¶

Upfront fee on principal, loan 4 [%]

Required: True

Type:	float

const_per_upfront_rate5¶

Upfront fee on principal, loan 5 [%]

Required: True

Type:	float

sales_tax_rate¶

Sales tax rate [%]

Required: True

Type:	float

ThermalStorage Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.ThermalStorage¶

assign() → None¶

Assign attributes from dictionary

ThermalStorage_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

cold_tank_Thtr¶

Minimum allowable cold tank HTF temperature [C]

Required: True

Type:	float

cold_tank_max_heat¶

Rated heater capacity for cold tank heating [MW]

Required: True

Type:	float

csp_pt_tes_init_hot_htf_percent¶

Initial fraction of available volume that is hot [%]

Required: True

Type:	float

h_tank¶

Total height of tank (height of HTF when tank is full) [m]

Required: True

Type:	float

h_tank_min¶

Minimum allowable HTF height in storage tank [m]

Required: True

Type:	float

hot_tank_Thtr¶

Minimum allowable hot tank HTF temperature [C]

Required: True

Type:	float

hot_tank_max_heat¶

Rated heater capacity for hot tank heating [MW]

Required: True

Type:	float

tank_pairs¶

Number of equivalent tank pairs

Constraints: INTEGER

Required: True

Type:	float

tanks_in_parallel¶

Tanks are in parallel, not in series, with solar field [-]

Required: True

Type:	float

u_tank¶

Loss coefficient from the tank [W/m2-K]

Required: True

Type:	float

RADCOOL Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.RADCOOL¶

assign() → None¶

Assign attributes from dictionary

RADCOOL_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

D_rad_tubes¶

Inner diameter of tubes in radiator panel [m]

Required: If not provided, assumed to be 0

Type:	float

L_rad¶

Length of radiator panel row [m]

Required: If not provided, assumed to be 0

Type:	float

L_rad_sections¶

Length of individual radiator panel [m]

Required: If not provided, assumed to be 0

Type:	float

T_ctes_cold_design¶

Design value of cooled water to power block [C]

Required: If not provided, assumed to be 0

Type:	float

T_ctes_cold_ini¶

Initial value of cold tank [C]

Required: If not provided, assumed to be 0

Type:	float

T_ctes_warm_design¶

Design value of warm water returning from power block [C]

Required: If not provided, assumed to be 0

Type:	float

T_ctes_warm_ini¶

Initial value of warm tank [C]

Required: If not provided, assumed to be 0

Type:	float

W_rad_tubes¶

Center-to-center distance between tubes in radiator panel [m]

Required: If not provided, assumed to be 0

Type:	float

ctes_cost¶

Cost of cold storage construction [$/L]

Required: If not provided, assumed to be 0

Type:	float

ctes_field_fl¶

Fluid in radiator field. 3=liquid water. Other = Glycol. [-]

Required: If not provided, assumed to be 3

Type:	float

ctes_tankpairs¶

Number of equivalent tank pairs [-]

Required: If not provided, assumed to be 0

Type:	float

ctes_tshours¶

Equivalent full load storage hours [hr]

Required: If not provided, assumed to be 0

Type:	float

ctes_type¶

Type of cold storage (2=two tank, 3= three node) [-]

Required: If not provided, assumed to be 0

Type:	float

epsilon_radHX¶

Effectiveness of HX between radiative field and cold storage [-]

Required: If not provided, assumed to be .8

Type:	float

epsilon_radbot¶

Emmissivity of top of radiator panel bottom (facing ground) [-]

Required: If not provided, assumed to be .07

Type:	float

epsilon_radgrnd¶

Emmissivity of ground underneath radiator panel [-]

Required: If not provided, assumed to be .90

Type:	float

epsilon_radtop¶

Emmissivity of top of radiator panel [-]

Required: If not provided, assumed to be .95

Type:	float

f_ctes_warm_ini¶

Initial fraction of avail. volume that is warm [-]

Required: If not provided, assumed to be 0

Type:	float

h_ctes_tank¶

Total height of cold storage tank when full [m]

Required: If not provided, assumed to be 0

Type:	float

h_ctes_tank_min¶

Minimum allowable water height in storage tank [m]

Required: If not provided, assumed to be 0

Type:	float

helio_area_tot¶

Heliostat total reflective area [-]

Required: If not provided, assumed to be 0

This variable may need to be updated if the values of the following have changed:

P_ref
c_atm_0
c_atm_1
c_atm_2
c_atm_3
dens_mirror
design_eff
dni_des
gross_net_conversion_factor
h_tower
helio_height
helio_optical_error_mrad
helio_positions
helio_width
land_area_base
land_max
land_min
solarm
tshours

Type:	float

k_panel¶

Thermal conductivity of radiator panel material [W/m-K]

Required: If not provided, assumed to be 235

Type:	float

m_dot_radpanel¶

Mass flow rate through single radiator panel [kg/sec]

Required: If not provided, assumed to be 0

Type:	float

n_rad_tubes¶

Number of parallel tubes in single radiator panel [-]

Required: If not provided, assumed to be 0

Type:	float

rad_multiplier¶

Ratio of radiator field area to solar aperature area [-]

Required: If not provided, assumed to be 0

Type:	float

rad_pressuredrop¶

Average pressure drop through a radiative panel & distribution [kPa]

Required: If not provided, assumed to be 0

Type:	float

radfluid_vol_ratio¶

Ratio of fluid in distribution to fluid in panels [-]

Required: If not provided, assumed to be 0

Type:	float

radiator_fluidcost¶

Cost of circulating fluid in radiative panels [$/L]

Required: If not provided, assumed to be 0

Type:	float

radiator_installcost¶

Installation cost of radiative panels [$/m^2]

Required: If not provided, assumed to be 0

Type:	float

radiator_unitcost¶

Cost of radiative panels [$/m^2]

Required: If not provided, assumed to be 0

Type:	float

th_rad_panel¶

Thickness of radiator panel [m]

Required: If not provided, assumed to be 0

Type:	float

u_ctes_tank¶

Loss coefficient from cold storage tank [W/m2-K]

Required: If not provided, assumed to be 0

Type:	float

PowerCycle Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.PowerCycle¶

assign() → None¶

Assign attributes from dictionary

PowerCycle_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

cycle_cutoff_frac¶

Minimum turbine operation fraction before shutdown

Required: True

Type:	float

cycle_max_frac¶

Maximum turbine over design operation fraction

Required: True

Type:	float

pb_pump_coef¶

Pumping power to move 1kg of HTF through PB loop [kW/kg]

Required: True

Type:	float

pc_config¶

PC configuration 0=Steam Rankine (224), 1=user defined, 2=sCO2 Recompression (424)

Constraints: INTEGER

Required: If not provided, assumed to be 0

Type:	float

q_sby_frac¶

Fraction of thermal power required for standby

Required: True

Type:	float

startup_frac¶

Fraction of design thermal power needed for startup [none]

Required: True

Type:	float

startup_time¶

Time needed for power block startup [hr]

Required: True

Type:	float

RankineCycle Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.RankineCycle¶

assign() → None¶

Assign attributes from dictionary

RankineCycle_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

CT¶

1=evaporative, 2=air, 3=hybrid

Required: True if pc_config=0

Type:	float
Type:	Condensor type

P_boil¶

Boiler operating pressure [bar]

Required: True if pc_config=0

Type:	float

P_cond_min¶

Minimum condenser pressure [inHg]

Required: True if pc_config=0

Type:	float

P_cond_ratio¶

Condenser pressure ratio

Required: True if pc_config=0

Type:	float

T_ITD_des¶

ITD at design for dry system [C]

Required: True if pc_config=0

Type:	float

T_amb_des¶

Reference ambient temperature at design point [C]

Required: True if pc_config=0

Type:	float

T_approach¶

Cooling tower approach temperature [C]

Required: True if pc_config=0

Type:	float

dT_cw_ref¶

Reference condenser cooling water inlet/outlet temperature difference [C]

Required: True if pc_config=0

Type:	float

n_pl_inc¶

Number of part-load increments for the heat rejection system [none]

Constraints: INTEGER

Required: True if pc_config=0

Type:	float

pb_bd_frac¶

Power block blowdown steam fraction

Required: True if pc_config=0

Type:	float

tech_type¶

Turbine inlet pressure control 1=Fixed, 3=Sliding

Required: True if pc_config=0

Type:	float

SystemControl Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.SystemControl¶

assign() → None¶

Assign attributes from dictionary

SystemControl_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

F_wc¶

TOU array of fractions indicating wet cooling share for hybrid cooling

Required: True if pc_config=0

Type:	sequence

ampl_data_dir¶

AMPL data file directory

Required: If not provided, assumed to be ‘’

Type:	str

ampl_exec_call¶

System command to run AMPL code

Required: If not provided, assumed to be ‘ampl sdk_solution.run’

Type:	str

aux_par¶

Aux heater, boiler parasitic [MWe/MWcap]

Required: True

Changes to this variable may require updating the values of the following:

wlim_series

Type:	float

aux_par_0¶

Aux heater, boiler parasitic - constant coefficient

Required: True

Changes to this variable may require updating the values of the following:

wlim_series

Type:	float

aux_par_1¶

Aux heater, boiler parasitic - linear coefficient

Required: True

Changes to this variable may require updating the values of the following:

wlim_series

Type:	float

aux_par_2¶

Aux heater, boiler parasitic - quadratic coefficient

Required: True

Changes to this variable may require updating the values of the following:

wlim_series

Type:	float

aux_par_f¶

Aux heater, boiler parasitic - multiplying fraction

Required: True

Changes to this variable may require updating the values of the following:

wlim_series

Type:	float

bop_par¶

Balance of plant parasitic power fraction [MWe/MWcap]

Required: True

Changes to this variable may require updating the values of the following:

wlim_series

Type:	float

bop_par_0¶

Balance of plant parasitic power fraction - const coeff

Required: True

Changes to this variable may require updating the values of the following:

wlim_series

Type:	float

bop_par_1¶

Balance of plant parasitic power fraction - linear coeff

Required: True

Changes to this variable may require updating the values of the following:

wlim_series

Type:	float

bop_par_2¶

Balance of plant parasitic power fraction - quadratic coeff

Required: True

Changes to this variable may require updating the values of the following:

wlim_series

Type:	float

bop_par_f¶

Balance of plant parasitic power fraction - mult frac

Required: True

Changes to this variable may require updating the values of the following:

wlim_series

Type:	float

disp_csu_cost¶

Cycle startup cost [$]

Required: True if is_dispatch=1

Type:	float

disp_frequency¶

Frequency for dispatch optimization calculations [hour]

Required: True if is_dispatch=1

Type:	float

disp_horizon¶

Time horizon for dispatch optimization [hour]

Required: True if is_dispatch=1

Type:	float

disp_inventory_incentive¶

Dispatch storage terminal inventory incentive multiplier

Required: If not provided, assumed to be 0.0

Type:	float

disp_max_iter¶

Max number of dispatch optimization iterations

Required: True if is_dispatch=1

Type:	float

disp_mip_gap¶

Dispatch optimization solution tolerance

Required: True if is_dispatch=1

Type:	float

disp_pen_delta_w¶

Dispatch cycle production change penalty [$/kWe-change]

Required: True if is_dispatch=1

Type:	float

disp_reporting¶

Dispatch optimization reporting level

Required: If not provided, assumed to be -1

Type:	float

disp_rsu_cost¶

Receiver startup cost [$]

Required: True if is_dispatch=1

Type:	float

disp_spec_bb¶

Dispatch optimization B&B heuristic

Required: If not provided, assumed to be -1

Type:	float

disp_spec_presolve¶

Dispatch optimization presolve heuristic

Required: If not provided, assumed to be -1

Type:	float

disp_spec_scaling¶

Dispatch optimization scaling heuristic

Required: If not provided, assumed to be -1

Type:	float

disp_steps_per_hour¶

Time steps per hour for dispatch optimization calculations

Required: If not provided, assumed to be 1

Type:	float

disp_time_weighting¶

Dispatch optimization future time discounting factor

Required: If not provided, assumed to be 0.99

Type:	float

disp_timeout¶

Max dispatch optimization solve duration [s]

Required: True if is_dispatch=1

Type:	float

dispatch_series¶

Time series dispatch factors

Type:	sequence

f_turb_tou_periods¶

Dispatch logic for turbine load fraction

Required: True

Type:	sequence

is_ampl_engine¶

Run dispatch optimization with external AMPL engine

Required: If not provided, assumed to be 0

Type:	float

is_dispatch¶

Allow dispatch optimization?

Required: If not provided, assumed to be 0

Changes to this variable may require updating the values of the following:

is_wlim_series

Type:	float

is_dispatch_series¶

Use time-series dispatch factors

Required: If not provided, assumed to be 0

Type:	float

is_tod_pc_target_also_pc_max¶

Is the TOD target cycle heat input also the max cycle heat input?

Required: If not provided, assumed to be 0

Type:	float

is_wlim_series¶

Use time-series net electricity generation limits

Required: If not provided, assumed to be 0

This variable may need to be updated if the values of the following have changed:

is_dispatch

Type:	float

is_write_ampl_dat¶

Write AMPL data files for dispatch run

Required: If not provided, assumed to be 0

Type:	float

pb_fixed_par¶

Fixed parasitic load - runs at all times [MWe/MWcap]

Required: True

Type:	float

q_rec_heattrace¶

Receiver heat trace energy consumption during startup [kWe-hr]

Required: If not provided, assumed to be 0.0

Type:	float

q_rec_standby¶

Receiver standby energy consumption [kWt]

Required: If not provided, assumed to be 9e99

Type:	float

time_start¶

Simulation start time [s]

Required: If not provided, assumed to be 0

Type:	float

time_steps_per_hour¶

Number of simulation time steps per hour

Required: If not provided, assumed to be -1

Type:	float

time_stop¶

Simulation stop time [s]

Required: If not provided, assumed to be 31536000

Type:	float

vacuum_arrays¶

Allocate arrays for only the required number of steps

Required: If not provided, assumed to be 0

Type:	float

weekday_schedule¶

12x24 CSP operation Time-of-Use Weekday schedule

Required: True

Type:	sequence[sequence]

weekend_schedule¶

12x24 CSP operation Time-of-Use Weekend schedule

Required: True

Type:	sequence[sequence]

wlim_series¶

Time series net electicity generation limits [kWe]

Required: True if is_wlim_series=1

This variable may need to be updated if the values of the following have changed:

P_ref
aux_par
aux_par_0
aux_par_1
aux_par_2
aux_par_f
bop_par
bop_par_0
bop_par_1
bop_par_2
bop_par_f

Type:	sequence

UserDefinedPowerCycle Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.UserDefinedPowerCycle¶

assign() → None¶

Assign attributes from dictionary

UserDefinedPowerCycle_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

ud_f_W_dot_cool_des¶

Percent of user-defined power cycle design gross output consumed by cooling [%]

Required: True if pc_config=1

Type:	float

ud_ind_od¶

Off design user-defined power cycle performance as function of T_htf, m_dot_htf [ND], and T_amb

Required: True if pc_config=1

Type:	sequence[sequence]

ud_m_dot_water_cool_des¶

Mass flow rate of water required at user-defined power cycle design point [kg/s]

Required: True if pc_config=1

Type:	float

SCO2Cycle Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.SCO2Cycle¶

assign() → None¶

Assign attributes from dictionary

SCO2Cycle_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

P_high_limit¶

Upper pressure limit in cycle [MPa]

Required: True if pc_config=2

Type:	float

deltaT_PHX¶

Design temperature difference in PHX [C]

Required: True if pc_config=2

Type:	float

eta_c¶

Isentropic efficiency of compressor(s)

Required: True if pc_config=2

Type:	float

eta_t¶

Isentropic efficiency of turbine

Required: True if pc_config=2

Type:	float

fan_power_perc_net¶

Percent of net cycle output used for fan power at design [%]

Required: True if pc_config=2

Type:	float

is_sco2_preprocess¶

Is sco2 off-design performance preprocessed? 1=yes

Required: If not provided, assumed to be 0

Type:	float

recup_eff_max¶

Maximum recuperator effectiveness

Required: True if pc_config=2

Type:	float

sco2_T_amb_des¶

Ambient temperature at design point [C]

Required: True if pc_config=2

Type:	float

sco2_T_approach¶

Temperature difference between main compressor CO2 inlet and ambient air [C]

Required: True if pc_config=2

Type:	float

sco2_cycle_config¶

SCO2 cycle configuration, 1=recompression, 2=partial cooling

Required: True if pc_config=2

Type:	float

sco2ud_T_amb_high¶

High level ambient temperature for HTF mass flow rate parametric [C]

Required: True if is_sco2_preprocess=1

Type:	float

sco2ud_T_amb_ind_od¶

Off design table of user-defined power cycle performance formed from parametric on T_amb [C]

Required: True if is_sco2_preprocess=1

Type:	sequence[sequence]

sco2ud_T_amb_low¶

Low level ambient temperature for HTF mass flow rate parametric [C]

Required: True if is_sco2_preprocess=1

Type:	float

sco2ud_T_htf_cold_calc¶

HTF cold temperature from sCO2 cycle des, may be different than T_htf_cold_des [C]

Required: True if is_sco2_preprocess=1

Type:	float

sco2ud_T_htf_high¶

High level HTF inlet temperature for T_amb parametric [C]

Required: True if is_sco2_preprocess=1

Type:	float

sco2ud_T_htf_ind_od¶

Off design table of user-defined power cycle performance formed from parametric on T_htf_hot [C]

Required: True if is_sco2_preprocess=1

Type:	sequence[sequence]

sco2ud_T_htf_low¶

Low level HTF inlet temperature for T_amb parametric [C]

Required: True if is_sco2_preprocess=1

Type:	float

sco2ud_m_dot_htf_high¶

High level normalized HTF mass flow rate for T_HTF parametric

Required: True if is_sco2_preprocess=1

Type:	float

sco2ud_m_dot_htf_ind_od¶

Off design table of user-defined power cycle performance formed from parametric on m_dot_htf [ND]

Required: True if is_sco2_preprocess=1

Type:	sequence[sequence]

sco2ud_m_dot_htf_low¶

Low level normalized HTF mass flow rate for T_HTF parametric

Required: True if is_sco2_preprocess=1

Type:	float

AdjustmentFactors Group¶

class PySAM.TcsmoltenSalt.TcsmoltenSalt.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.TcsmoltenSalt.TcsmoltenSalt.Outputs¶

assign() → None¶

Assign attributes from dictionary

Outputs_vals = { var: val, ...}

export() → dict¶: Export attributes into dictionary

A_radfield¶

Radiator field surface area [m^2]

Type:	float

A_sf¶

Solar field area [m^2]

Type:	float

P_cond¶

PC condensing presssure [Pa]

Type:	sequence

P_cooling_tower_tot¶

Parasitic power condenser operation [MWe]

Type:	sequence

P_cycle¶

PC electrical power output, gross [MWe]

Type:	sequence

P_fixed¶

Parasitic power fixed load [MWe]

Type:	sequence

P_out_net¶

Total electric power to grid [MWe]

Type:	sequence

P_plant_balance_tot¶

Parasitic power generation-dependent load [MWe]

Type:	sequence

P_rec_heattrace¶

Receiver heat trace parasitic load [MWe]

Type:	sequence

P_tower_pump¶

Parasitic power receiver/tower HTF pump [MWe]

Type:	sequence

Q_thermal¶

Receiver thermal power to HTF less piping loss [MWt]

Type:	sequence

Q_thermal_ss¶

Receiver thermal power to HTF less piping loss (steady state) [MWt]

Type:	sequence

Q_thermal_ss_csky¶

Receiver thermal power to HTF less piping loss under clear-sky conditions (steady state) [MWt]

Type:	sequence

T_cold¶

Cold storage cold temperature [C]

Type:	sequence

T_cond_out¶

PC condenser water outlet temperature [C]

Type:	sequence

T_panel_out_max¶

Receiver panel maximum HTF outlet temperature during timestep [C]

Type:	sequence

T_pc_in¶

PC HTF inlet temperature [C]

Type:	sequence

T_pc_out¶

PC HTF outlet temperature [C]

Type:	sequence

T_rad_out¶

Radiator outlet temperature [C]

Type:	sequence

T_rec_in¶

Receiver HTF inlet temperature [C]

Type:	sequence

T_rec_out¶

Receiver HTF outlet temperature [C]

Type:	sequence

T_rec_out_end¶

Receiver HTF outlet temperature at end of timestep [C]

Type:	sequence

T_rec_out_max¶

Receiver maximum HTF outlet temperature during timestep [C]

Type:	sequence

T_tes_cold¶

TES cold temperature [C]

Type:	sequence

T_tes_hot¶

TES hot temperature [C]

Type:	sequence

T_wall_downcomer¶

Receiver downcomer wall temperature at end of timestep [C]

Type:	sequence

T_wall_rec_inlet¶

Receiver inlet panel wall temperature at end of timestep [C]

Type:	sequence

T_wall_rec_outlet¶

Receiver outlet panel wall temperature at end of timestep [C]

Type:	sequence

T_wall_riser¶

Receiver riser wall temperature at end of timestep [C]

Type:	sequence

T_warm¶

Cold storage warm tank temperature [C]

Type:	sequence

annual_W_cooling_tower¶

Total of condenser operation parasitics [kWhe]

Type:	float

annual_W_cycle_gross¶

Electrical source - power cycle gross output [kWhe]

Type:	float

annual_energy¶

Annual total electric power to grid [kWhe]

Type:	float

annual_eta_rec_th¶

Annual receiver thermal efficiency ignoring rec reflective loss

Type:	float

annual_eta_rec_th_incl_refl¶

Annual receiver thermal efficiency including reflective loss

Type:	float

annual_q_rec_inc¶

Annual receiver incident thermal power after reflective losses [MWt-hr]

Type:	float

annual_q_rec_loss¶

Annual receiver convective and radiative losses [MWt-hr]

Type:	float

annual_total_water_use¶

Total annual water usage, cycle + mirror washing [m3]

Type:	float

beam¶

Resource beam normal irradiance [W/m2]

Type:	sequence

capacity_factor¶

Capacity factor [%]

Type:	float

clearsky¶

Predicted clear-sky beam normal irradiance [W/m2]

Type:	sequence

const_per_interest1¶

Interest cost, loan 1 [$]

Type:	float

const_per_interest2¶

Interest cost, loan 2 [$]

Type:	float

const_per_interest3¶

Interest cost, loan 3 [$]

Type:	float

const_per_interest4¶

Interest cost, loan 4 [$]

Type:	float

const_per_interest5¶

Interest cost, loan 5 [$]

Type:	float

const_per_interest_total¶

Total interest costs, all loans [$]

Type:	float

const_per_percent_total¶

Total percent of installed costs, all loans [%]

Type:	float

const_per_principal1¶

Principal, loan 1 [$]

Type:	float

const_per_principal2¶

Principal, loan 2 [$]

Type:	float

const_per_principal3¶

Principal, loan 3 [$]

Type:	float

const_per_principal4¶

Principal, loan 4 [$]

Type:	float

const_per_principal5¶

Principal, loan 5 [$]

Type:	float

const_per_principal_total¶

Total principal, all loans [$]

Type:	float

const_per_total1¶

Total financing cost, loan 1 [$]

Type:	float

const_per_total2¶

Total financing cost, loan 2 [$]

Type:	float

const_per_total3¶

Total financing cost, loan 3 [$]

Type:	float

const_per_total4¶

Total financing cost, loan 4 [$]

Type:	float

const_per_total5¶

Total financing cost, loan 5 [$]

Type:	float

construction_financing_cost¶

Total construction financing cost [$]

Type:	float

conversion_factor¶

Gross to net conversion factor [%]

Type:	float

csp_pt_cost_bop¶

BOP cost [$]

Type:	float

csp_pt_cost_contingency¶

Contingency cost [$]

Type:	float

csp_pt_cost_epc_total¶

EPC and owner cost [$]

Type:	float

csp_pt_cost_fossil¶

Fossil backup cost [$]

Type:	float

csp_pt_cost_heliostats¶

Heliostat cost [$]

Type:	float

csp_pt_cost_installed_per_capacity¶

Estimated installed cost per cap [$]

Type:	float

csp_pt_cost_plm_total¶

Total land cost [$]

Type:	float

csp_pt_cost_power_block¶

Power cycle cost [$]

Type:	float

csp_pt_cost_rad_field¶

Radiative field cost$

Type:	float

csp_pt_cost_rad_fluid¶

Radiative fluid cost$

Type:	float

csp_pt_cost_rad_storage¶

Cold storage cost$

Type:	float

csp_pt_cost_receiver¶

Receiver cost [$]

Type:	float

csp_pt_cost_sales_tax_total¶

Sales tax cost [$]

Type:	float

csp_pt_cost_site_improvements¶

Site improvement cost [$]

Type:	float

csp_pt_cost_storage¶

TES cost [$]

Type:	float

csp_pt_cost_total_land_area¶

Total land area [acre]

Type:	float

csp_pt_cost_tower¶

Tower cost [$]

Type:	float

defocus¶

Field optical focus fraction

Type:	sequence

disp_iter_ann¶

Annual sum of dispatch solver iterations

Type:	float

disp_obj_relax¶

Dispatch objective function - relaxed max

Type:	sequence

disp_objective¶

Dispatch objective function value

Type:	sequence

disp_objective_ann¶

Annual sum of dispatch objective function value

Type:	float

disp_pceff_expected¶

Dispatch expected power cycle efficiency adj.

Type:	sequence

disp_presolve_nconstr¶

Dispatch number of constraints in problem

Type:	sequence

disp_presolve_nconstr_ann¶

Annual sum of dispatch problem constraint count

Type:	float

disp_presolve_nvar¶

Dispatch number of variables in problem

Type:	sequence

disp_presolve_nvar_ann¶

Annual sum of dispatch problem variable count

Type:	float

disp_qpbsu_expected¶

Dispatch expected power cycle startup energy [MWht]

Type:	sequence

disp_qsf_expected¶

Dispatch expected solar field available energy [MWt]

Type:	sequence

disp_qsfprod_expected¶

Dispatch expected solar field generation [MWt]

Type:	sequence

disp_qsfsu_expected¶

Dispatch expected solar field startup enegy [MWt]

Type:	sequence

disp_rev_expected¶

Dispatch expected revenue factor

Type:	sequence

disp_solve_iter¶

Dispatch iterations count

Type:	sequence

disp_solve_state¶

Dispatch solver state

Type:	sequence

disp_solve_time¶

Dispatch solver time [sec]

Type:	sequence

disp_solve_time_ann¶

Annual sum of dispatch solver time

Type:	float

disp_tes_expected¶

Dispatch expected TES charge level [MWht]

Type:	sequence

disp_thermeff_expected¶

Dispatch expected SF thermal efficiency adj.

Type:	sequence

disp_wpb_expected¶

Dispatch expected power generation [MWe]

Type:	sequence

e_ch_tes¶

TES charge state [MWht]

Type:	sequence

eta¶

PC efficiency, gross

Type:	sequence

eta_field¶

Field optical efficiency

Type:	sequence

eta_map_out¶

Solar field optical efficiencies

Type:	sequence[sequence]

eta_therm¶

Receiver thermal efficiency

Type:	sequence

flux_maps_for_import¶

Flux map for import

Type:	sequence[sequence]

flux_maps_out¶

Flux map intensities

Type:	sequence[sequence]

gen¶

Total electric power to grid with available derate [kWe]

Type:	sequence

htf_pump_power¶

Parasitic power TES and cycle HTF pump [MWe]

Type:	sequence

is_pc_sb_allowed¶

Is power cycle standby allowed

Type:	sequence

is_pc_su_allowed¶

Is power cycle startup allowed

Type:	sequence

is_rec_su_allowed¶

Is receiver startup allowed

Type:	sequence

kwh_per_kw¶

First year kWh/kW [kWh/kW]

Type:	float

m_cold¶

Cold storage cold tank mass [kg]

Type:	sequence

m_dot_balance¶

Relative mass flow balance error

Type:	sequence

m_dot_cr_to_tes_hot¶

field to hot TES [kg/s]

Type:	sequence
Type:	Mass flow

m_dot_cycle_to_field¶

cycle to field [kg/s]

Type:	sequence
Type:	Mass flow

m_dot_field_to_cycle¶

field to cycle [kg/s]

Type:	sequence
Type:	Mass flow

m_dot_pc¶

PC HTF mass flow rate [kg/s]

Type:	sequence

m_dot_pc_to_tes_cold¶

cycle to cold TES [kg/s]

Type:	sequence
Type:	Mass flow

m_dot_rec¶

Receiver mass flow rate [kg/s]

Type:	sequence

m_dot_tes_cold_out¶

TES cold out [kg/s]

Type:	sequence
Type:	Mass flow

m_dot_tes_hot_out¶

TES hot out [kg/s]

Type:	sequence
Type:	Mass flow

m_dot_water_pc¶

PC water consumption, makeup + cooling [kg/s]

Type:	sequence

m_warm¶

Cold storage warm tank mass [kg]

Type:	sequence

mass_tes_cold¶

TES cold tank mass (end) [kg]

Type:	sequence

mass_tes_hot¶

TES hot tank mass (end) [kg]

Type:	sequence

n_op_modes¶

Operating modes in reporting timestep

Type:	sequence

op_mode_1¶

1st operating mode

Type:	sequence

op_mode_2¶

2nd operating mode, if applicable

Type:	sequence

op_mode_3¶

3rd operating mode, if applicable

Type:	sequence

operating_modes_a¶

First 3 operating modes tried

Type:	sequence

operating_modes_b¶

Next 3 operating modes tried

Type:	sequence

operating_modes_c¶

Final 3 operating modes tried

Type:	sequence

pparasi¶

Parasitic power heliostat drives [MWe]

Type:	sequence

pricing_mult¶

PPA price multiplier

Type:	sequence

q_balance¶

Relative energy balance error

Type:	sequence

q_ch_tes¶

TES charge thermal power [MWt]

Type:	sequence

q_dc_tes¶

TES discharge thermal power [MWt]

Type:	sequence

q_dot_est_cr_on¶

Estimated receiver thermal power TO HTF [MWt]

Type:	sequence

q_dot_est_cr_su¶

Estimated receiver startup thermal power [MWt]

Type:	sequence

q_dot_est_tes_ch¶

Estimated max TES charge thermal power [MWt]

Type:	sequence

q_dot_est_tes_dc¶

Estimated max TES discharge thermal power [MWt]

Type:	sequence

q_dot_pc_max¶

Max thermal power to PC [MWt]

Type:	sequence

q_dot_pc_min¶

Thermal power for PC min operation [MWt]

Type:	sequence

q_dot_pc_sb¶

Thermal power for PC standby [MWt]

Type:	sequence

q_dot_pc_startup¶

PC startup thermal power [MWt]

Type:	sequence

q_dot_pc_target¶

Target thermal power to PC [MWt]

Type:	sequence

q_dot_rec_inc¶

Receiver incident thermal power [MWt]

Type:	sequence

q_heater¶

TES freeze protection power [MWe]

Type:	sequence

q_pb¶

PC input energy [MWt]

Type:	sequence

q_pc_startup¶

PC startup thermal energy [MWht]

Type:	sequence

q_piping_losses¶

Receiver header/tower piping losses [MWt]

Type:	sequence

q_sf_inc¶

Field incident thermal power [MWt]

Type:	sequence

q_startup¶

Receiver startup thermal energy consumed [MWt]

Type:	sequence

q_thermal_loss¶

Receiver convection and emission losses [MWt]

Type:	sequence

radcool_control¶

Radiative cooling status code [-]

Type:	sequence

rh¶

Resource relative humidity [%]

Type:	sequence

sco2_preprocess_table_out¶

sCO2 cycle preprocessed data in UDPC format

Type:	sequence[sequence]

sf_adjust_out¶

Field availability adjustment factor

Type:	sequence

solaz¶

Resource solar azimuth [deg]

Type:	sequence

solzen¶

Resource solar zenith [deg]

Type:	sequence

tank_losses¶

TES thermal losses [MWt]

Type:	sequence

tdry¶

Resource dry Bulb temperature [C]

Type:	sequence

time_hr¶

Time at end of timestep [hr]

Type:	sequence

total_direct_cost¶

Total direct cost [$]

Type:	float

total_indirect_cost¶

Total indirect cost [$]

Type:	float

total_installed_cost¶

Total installed cost [$]

Type:	float

tou_value¶

CSP operating time-of-use value

Type:	sequence

twet¶

Resource wet Bulb temperature [C]

Type:	sequence

ui_direct_subtotal¶

Direct capital precontingency cost [$]

Type:	float

wspd¶

Resource wind velocity [m/s]

Type:	sequence

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TcsmoltenSalt¶

Input Consistency Warning¶

Creating an Instance¶

Functions¶

SolarResource Group¶

TimeOfDeliveryFactors Group¶

HeliostatField Group¶

SystemDesign Group¶

TowerAndReceiver Group¶

SystemCosts Group¶

FinancialParameters Group¶

ThermalStorage Group¶

RADCOOL Group¶

PowerCycle Group¶

RankineCycle Group¶

SystemControl Group¶

UserDefinedPowerCycle Group¶

SCO2Cycle Group¶

AdjustmentFactors Group¶

Outputs Group¶