Sco2CspUdPcTables

Supercritical CO2 Power Cycle

PySAM.Sco2CspUdPcTables.default(config) → Sco2CspUdPcTables

Load defaults for the configuration config. Available configurations are:

None

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.Sco2CspUdPcTables.from_existing(data, optional config) → Sco2CspUdPcTables: Share data with an existing PySAM class. If optional config is a valid configuration name, load the module’s defaults for that configuration.

PySAM.Sco2CspUdPcTables.new() → Sco2CspUdPcTables

PySAM.Sco2CspUdPcTables.wrap(ssc_data_t) → Sco2CspUdPcTables: Load data from a PySSC object.

Warning

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

Sco2CspUdPcTables is a wrapper for the SSC compute module cmod_sco2_csp_ud_pc_tables.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.

None

Functions

class PySAM.Sco2CspUdPcTables.Sco2CspUdPcTables

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 = { 'System Design': { var: val, ...}, ...}

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

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

get_data_ptr() → Pointer: Get ssc_data_t pointer

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 = { 'System Design': { var: val, ...}, ...}

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

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

SystemDesign Group

class PySAM.Sco2CspUdPcTables.Sco2CspUdPcTables.SystemDesign

assign(dict) → None

Assign attributes from dictionary, overwriting but not removing values.

SystemDesign_vals = { var: val, ...}

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

replace(dict) → None

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

SystemDesign_vals = { var: val, ...}

T_amb_des

Ambient temperature [C]

Required: True

Type:: float

T_htf_hot_des

HTF design hot temperature (PHX inlet) [C]

Required: True

Type:: float

W_dot_net_des

Design cycle power output (no cooling parasitics) [MWe]

Required: True

Type:: float

dT_PHX_hot_approach

Temp diff btw hot HTF and turbine inlet [C]

Required: True

Type:: float

dT_mc_approach

Temp diff btw ambient air and main compressor inlet [C]

Required: True

Type:: float

design_method

1 = Specify efficiency, 2 = Specify total recup UA, 3 = Specify each recup design

Required: True

Type:: float

eta_thermal_des

Power cycle thermal efficiency

Required: Required if design_method=1

Type:: float

htf

Integer code for HTF used in PHX

Required: True

Type:: float

htf_props

User defined HTF property data

Info: 7 columns (T,Cp,dens,visc,kvisc,cond,h), at least 3 rows

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

Type:: sequence[sequence]

site_elevation

Site elevation [m]

Required: True

Type:: float

HeatExchangerDesign Group

class PySAM.Sco2CspUdPcTables.Sco2CspUdPcTables.HeatExchangerDesign

assign(dict) → None

Assign attributes from dictionary, overwriting but not removing values.

HeatExchangerDesign_vals = { var: val, ...}

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

replace(dict) → None

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

HeatExchangerDesign_vals = { var: val, ...}

HTR_HP_deltaP_des_in

HTR high pressure side pressure drop as fraction of inlet pressure [-]

Info: High temperature recuperator

Type:: float

HTR_LP_deltaP_des_in

HTR low pressure side pressure drop as fraction of inlet pressure [-]

Info: High temperature recuperator

Type:: float

HTR_UA_des_in

Design HTR conductance [kW/K]

Info: High temperature recuperator

Required: Required if design_method=3

Type:: float

HTR_design_code

1 = UA, 2 = min dT, 3 = effectiveness [-]

Info: High temperature recuperator

Required: Required if design_method=3

Type:: float

HTR_eff_des_in

Design effectiveness for HTR [-]

Info: High temperature recuperator

Required: Required if design_method=3

Type:: float

HTR_min_dT_des_in

Design minimum allowable temperature difference in HTR [C]

Info: High temperature recuperator

Required: Required if design_method=3

Type:: float

HTR_n_sub_hx

HTR number of model subsections [-]

Info: High temperature recuperator

Required: False. Automatically set to 10 if not assigned explicitly or loaded from defaults.

Type:: float

HTR_od_model

mass flow scale, 1: conductance ratio model [-]

Info: High temperature recuperator

Required: False. Automatically set to 1 if not assigned explicitly or loaded from defaults.

Type:: float
Type:: 0

HT_recup_eff_max

Maximum allowable effectiveness in HTR [-]

Info: High temperature recuperator

Required: False. Automatically set to 1.0 if not assigned explicitly or loaded from defaults.

Type:: float

LTR_HP_deltaP_des_in

LTR high pressure side pressure drop as fraction of inlet pressure [-]

Info: Low temperature recuperator

Type:: float

LTR_LP_deltaP_des_in

LTR low pressure side pressure drop as fraction of inlet pressure [-]

Info: Low temperature recuperator

Type:: float

LTR_UA_des_in

Design LTR conductance [kW/K]

Info: Low temperature recuperator

Required: Required if design_method=3

Type:: float

LTR_design_code

1 = UA, 2 = min dT, 3 = effectiveness [-]

Info: Low temperature recuperator

Required: Required if design_method=3

Type:: float

LTR_eff_des_in

Design effectiveness for LTR [-]

Info: Low temperature recuperator

Required: Required if design_method=3

Type:: float

LTR_min_dT_des_in

Design minimum allowable temperature difference in LTR [C]

Info: Low temperature recuperator

Required: Required if design_method=3

Type:: float

LTR_n_sub_hx

LTR number of model subsections [-]

Info: Low temperature recuperator

Required: False. Automatically set to 10 if not assigned explicitly or loaded from defaults.

Type:: float

LTR_od_model

mass flow scale, 1: conductance ratio model [-]

Info: Low temperature recuperator

Required: False. Automatically set to 1 if not assigned explicitly or loaded from defaults.

Type:: float
Type:: 0

LT_recup_eff_max

Maximum allowable effectiveness in LTR [-]

Info: Low temperature recuperator

Required: False. Automatically set to 1.0 if not assigned explicitly or loaded from defaults.

Type:: float

UA_recup_tot_des

Total recuperator conductance [kW/K]

Info: Combined recuperator design

Required: Required if design_method=2

Type:: float

cycle_config

1 = recompression, 2 = partial cooling

Info: High temperature recuperator

Required: False. Automatically set to 1 if not assigned explicitly or loaded from defaults.

Type:: float

des_objective

[2] = hit min phx deltat then max eta, [else] max eta

Info: High temperature recuperator

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

Type:: float

is_IP_fixed

0 = No, >0 = fixed HP-IP pressure ratio at input, <0 = fixed IP at abs(input)

Info: High temperature recuperator

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

Type:: float
Type:: partial cooling config

is_PR_fixed

0 = No, >0 = fixed pressure ratio at input <0 = fixed LP at abs(input) [High temperature recuperator]

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

Type:: float

is_P_high_fixed

1 = Yes (=P_high_limit), 0 = No, optimized (default)

Info: High temperature recuperator

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

Type:: float

is_recomp_ok

1 = Yes, 0 = simple cycle only, < 0 = fix f_recomp to abs(input)

Info: High temperature recuperator

Required: False. Automatically set to 1 if not assigned explicitly or loaded from defaults.

Type:: float

min_phx_deltaT

Minimum design temperature difference across PHX [C]

Info: High temperature recuperator

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

Type:: float

rel_tol

Baseline solver and optimization relative tolerance exponent (10^-rel_tol) [-]

Info: High temperature recuperator

Required: False. Automatically set to 3 if not assigned explicitly or loaded from defaults.

Type:: float

Common Group

class PySAM.Sco2CspUdPcTables.Sco2CspUdPcTables.Common

assign(dict) → None

Assign attributes from dictionary, overwriting but not removing values.

Common_vals = { var: val, ...}

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

replace(dict) → None

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

Common_vals = { var: val, ...}

PHX_co2_deltaP_des_in

PHX co2 side pressure drop as fraction of inlet pressure [-]

Type:: float

P_high_limit

High pressure limit in cycle [MPa]

Required: True

Type:: float

T_amb_high

Upper level of ambient temperature [C]

INOUT: This variable is both an input and an output to the compute module.

Type:: float

T_amb_low

Lower level of ambient temperature [C]

INOUT: This variable is both an input and an output to the compute module.

Type:: float

T_htf_hot_high

Upper level of HTF hot temperature [C]

INOUT: This variable is both an input and an output to the compute module.

Type:: float

T_htf_hot_low

Lower level of HTF hot temperature [C]

INOUT: This variable is both an input and an output to the compute module.

Type:: float

deltaP_counterHX_frac

Fraction of CO2 inlet pressure that is design point counterflow HX (recups & PHX) pressure drop [-]

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

Type:: float

eta_isen_mc

Design main compressor isentropic efficiency [-]

Required: True

Type:: float

eta_isen_pc

Design precompressor isentropic efficiency [-]

Required: Required if cycle_config=2

Type:: float

eta_isen_rc

Design re-compressor isentropic efficiency [-]

Required: True

Type:: float

eta_isen_t

Design turbine isentropic efficiency [-]

Required: True

Type:: float

is_apply_default_htf_mins

1 = yes (0.5 rc, 0.7 simple), 0 = no, only use ‘m_dot_htf_ND_low’

Required: False. Automatically set to 1 if not assigned explicitly or loaded from defaults.

Type:: float

is_generate_udpc

1 = generate udpc tables, 0 = only calculate design point cyle

Required: False. Automatically set to 1 if not assigned explicitly or loaded from defaults.

Type:: float

m_dot_htf_ND_high

Upper level of normalized HTF mass flow rate

INOUT: This variable is both an input and an output to the compute module.

Type:: float

m_dot_htf_ND_low

Lower level of normalized HTF mass flow rate

INOUT: This variable is both an input and an output to the compute module.

Type:: float

mc_comp_type

SNL 2: CompA [-]

Required: False. Automatically set to 1 if not assigned explicitly or loaded from defaults.

Type:: float
Type:: Main compressor compressor type 1

n_T_amb

Number of ambient temperature parametric runs

INOUT: This variable is both an input and an output to the compute module.

Type:: float

n_T_htf_hot

Number of HTF hot temperature parametric runs

INOUT: This variable is both an input and an output to the compute module.

Type:: float

n_m_dot_htf_ND

Number of normalized HTF mass flow rate parametric runs

INOUT: This variable is both an input and an output to the compute module.

Type:: float

PHXDesign Group

class PySAM.Sco2CspUdPcTables.Sco2CspUdPcTables.PHXDesign

assign(dict) → None

Assign attributes from dictionary, overwriting but not removing values.

PHXDesign_vals = { var: val, ...}

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

replace(dict) → None

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

PHXDesign_vals = { var: val, ...}

PHX_n_sub_hx

Number of subsections in PHX model [-]

Required: False. Automatically set to 10 if not assigned explicitly or loaded from defaults.

Type:: float

PHX_od_model

mass flow scale, 1: conductance ratio model [-]

Required: False. Automatically set to 1 if not assigned explicitly or loaded from defaults.

Type:: float
Type:: 0

dT_PHX_cold_approach

Temp diff btw cold HTF and cold CO2 [C]

Required: True

Type:: float

AirCoolerDesign Group

class PySAM.Sco2CspUdPcTables.Sco2CspUdPcTables.AirCoolerDesign

assign(dict) → None

Assign attributes from dictionary, overwriting but not removing values.

AirCoolerDesign_vals = { var: val, ...}

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

replace(dict) → None

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

AirCoolerDesign_vals = { var: val, ...}

N_nodes_air_cooler_pass

Number of nodes in single air cooler pass

Required: False. Automatically set to 10 if not assigned explicitly or loaded from defaults.

Type:: float

deltaP_cooler_frac

Fraction of CO2 inlet pressure that is design point cooler CO2 pressure drop

Required: True

Type:: float

eta_air_cooler_fan

Air cooler fan isentropic efficiency

Required: False. Automatically set to 0.5 if not assigned explicitly or loaded from defaults.

Type:: float

fan_power_frac

Fraction of net cycle power consumed by air cooler fan

Required: True

Type:: float

is_design_air_cooler

Defaults to True. False will skip air cooler calcs

Required: False. Automatically set to 1.0 if not assigned explicitly or loaded from defaults.

Type:: float

Outputs Group

class PySAM.Sco2CspUdPcTables.Sco2CspUdPcTables.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, ...}

HTR_HP_T_in_des

High temp recuperator HP inlet temperature [C]

Type:: float

HTR_HP_deltaP_des

High temp recuperator high pressure design pressure drop [-]

Type:: float

HTR_LP_T_out_des

High temp recuperator LP outlet temperature [C]

Type:: float

HTR_LP_deltaP_des

High temp recuperator low pressure design pressure drop [-]

Type:: float

HTR_UA_assigned

High temp recuperator UA assigned from total [MW/K]

Type:: float

HTR_UA_calculated

High temp recuperator UA calculated considering max eff and/or min temp diff parameter [MW/K]

Type:: float

HTR_cost_bare_erected

High temp recuperator cost equipment and install [M$]

Type:: float

HTR_cost_equipment

High temp recuperator cost equipment [M$]

Type:: float

HTR_min_dT

High temp recuperator min temperature difference [C]

Type:: float

LTR_HP_T_out_des

Low temp recuperator HP outlet temperature [C]

Type:: float

LTR_HP_deltaP_des

Low temp recuperator high pressure design pressure drop [-]

Type:: float

LTR_LP_deltaP_des

Low temp recuperator low pressure design pressure drop [-]

Type:: float

LTR_UA_assigned

Low temp recuperator UA assigned from total [MW/K]

Type:: float

LTR_UA_calculated

Low temp recuperator UA calculated considering max eff and/or min temp diff parameter [MW/K]

Type:: float

LTR_cost_bare_erected

Low temp recuperator cost equipment and install [M$]

Type:: float

LTR_cost_equipment

Low temp recuperator cost equipment [M$]

Type:: float

LTR_min_dT

Low temp recuperator min temperature difference [C]

Type:: float

NTU_HTR

High temp recuperator NTRU

Type:: float

NTU_LTR

Low temp recuperator NTU

Type:: float

NTU_PHX

PHX NTU

Type:: float

PHX_co2_deltaP_des

PHX co2 side design pressure drop [-]

Type:: float

PHX_cost_bare_erected

PHX cost equipment and install [M$]

Type:: float

PHX_cost_equipment

PHX cost equipment [M$]

Type:: float

PHX_min_dT

PHX min temperature difference [C]

Type:: float

P_co2_PHX_in

CO2 pressure at PHX inlet [MPa]

Type:: float

P_comp_in

Compressor inlet pressure [MPa]

Type:: float

P_comp_out

Compressor outlet pressure [MPa]

Type:: float

P_mc_data

Pressure points along main compression [MPa]

Type:: sequence

P_pc_data

Pressure points along pre compression [MPa]

Type:: sequence

P_rc_data

Pressure points along re compression [MPa]

Type:: sequence

P_state_points

Cycle pressure state points [MPa]

Type:: sequence

P_t_data

Pressure points along turbine expansion [MPa]

Type:: sequence

T_HTR_HP_data

Temperature points along HTR HP stream [C]

Type:: sequence

T_HTR_LP_data

Temperature points along HTR LP stream [C]

Type:: sequence

T_LTR_HP_data

Temperature points along LTR HP stream [C]

Type:: sequence

T_LTR_LP_data

Temperature points along LTR LP stream [C]

Type:: sequence

T_PHX_data

Temperature points along PHX stream [C]

Type:: sequence

T_amb_ind

Parametric of ambient temp w/ HTF temp levels

Type:: sequence[sequence]

T_co2_PHX_in

CO2 temperature at PHX inlet [C]

Type:: float

T_comp_in

Compressor inlet temperature [C]

Type:: float

T_htf_cold_des

HTF design cold temperature (PHX outlet) [C]

Type:: float

T_htf_ind

Parametric of HTF temperature w/ ND HTF mass flow rate levels

Type:: sequence[sequence]

T_main_cooler_data

Temperature points along main cooler stream [C]

Type:: sequence

T_pre_cooler_data

Temperature points along pre cooler stream [C]

Type:: sequence

T_state_points

Cycle temperature state points [C]

Type:: sequence

T_turb_in

Turbine inlet temperature [C]

Type:: float

UA_PHX

PHX Conductance [MW/K]

Type:: float

W_dot_net_less_cooling

System power output subtracting cooling parastics [MWe,System Design Solution]

Type:: float

c_tot_W_dot

Compressor total summed power [MWe]

Type:: float

c_tot_cost_equip

Compressor total cost [M$]

Type:: float

cooler_tot_UA

Total cooler conductance [MW/K]

Type:: float

cooler_tot_W_dot_fan

Total cooler fan power [MWe]

Type:: float

cooler_tot_cost_bare_erected

Total cooler cost equipment and install [M$]

Type:: float

cooler_tot_cost_equipment

Total cooler cost equipment [M$]

Type:: float

cycle_cost

Cycle cost bare erected [M$]

Type:: float

cycle_spec_cost

Cycle specific cost bare erected [$/kWe]

Type:: float

cycle_spec_cost_thermal

Cycle specific (thermal) cost bare erected [$/kWt]

Type:: float

deltaT_HTF_PHX

HTF temp difference across PHX [C]

Type:: float

eff_HTR

High temp recuperator effectiveness

Type:: float

eff_LTR

Low temp recuperator effectiveness

Type:: float

eff_PHX

PHX effectiveness

Type:: float

eta_thermal_calc

Calculated cycle thermal efficiency [-]

Type:: float

eta_thermal_net_less_cooling_des

Calculated cycle thermal efficiency using W_dot_net_less_cooling [-]

Type:: float

h_mc_data

Enthalpy points along main compression [kJ/kg]

Type:: sequence

h_pc_data

Enthalpy points along pre compression [kJ/kg]

Type:: sequence

h_rc_data

Enthalpy points along re compression [kJ/kg]

Type:: sequence

h_state_points

Cycle enthalpy state points [kJ/kg]

Type:: sequence

h_t_data

Enthalpy points along turbine expansion [kJ/kg]

Type:: sequence

m_dot_co2_full

CO2 mass flow rate through HTR, PHX, turbine [kg/s]

Type:: float

m_dot_htf_ND_ind

Parametric of ND HTF mass flow rate w/ ambient temp levels

Type:: sequence[sequence]

m_dot_htf_des

HTF mass flow rate [kg/s]

Type:: float

mc_D

Compressor stage diameters [m]

Type:: sequence

mc_N_des

Compressor design shaft speed [rpm]

Type:: float

mc_T_out

Compressor outlet temperature [C]

Type:: float

mc_W_dot

Compressor power [MWe]

Type:: float

mc_cooler_P_in

Low pressure cross flow cooler inlet pressure [MPa]

Type:: float

mc_cooler_T_in

Low pressure cross flow cooler inlet temperature [C]

Type:: float

mc_cooler_UA

Low pressure cross flow cooler conductance [MW/K]

Type:: float

mc_cooler_W_dot_fan

Low pressure cooler fan power [MWe]

Type:: float

mc_cooler_co2_deltaP_des

Low pressure cooler co2 side design pressure drop [-]

Type:: float

mc_cooler_cost_bare_erected

Low pressure cooler cost equipment and install [M$]

Type:: float

mc_cooler_cost_equipment

Low pressure cooler cost equipment [M$]

Type:: float

mc_cooler_in_isen_deltah_to_P_mc_out

Low pressure cross flow cooler inlet isen enthalpy rise to mc outlet pressure [kJ/kg]

Type:: float

mc_cooler_m_dot_co2

Low pressure cross flow cooler CO2 mass flow rate [kg/s]

Type:: float

mc_cooler_q_dot

Low pressure cooler heat transfer [MWt]

Type:: float

mc_cooler_rho_in

Low pressure cross flow cooler inlet density [kg/m3]

Type:: float

mc_cost_bare_erected

Compressor cost equipment plus install [M$]

Type:: float

mc_cost_equipment

Compressor cost equipment [M$]

Type:: float

mc_eta_stages_des

Compressor design stage isentropic efficiencies

Type:: sequence

mc_ideal_spec_work

Compressor ideal spec work [kJ/kg]

Type:: float

mc_m_dot_des

Compressor mass flow rate [kg/s]

Type:: float

mc_n_stages

Compressor stages

Type:: float

mc_phi_des

Compressor design flow coefficient

Type:: float

mc_phi_surge

Compressor flow coefficient where surge occurs

Type:: float

mc_psi_des

Compressor design ideal head coefficient

Type:: float

mc_psi_max_at_N_des

Compressor max ideal head coefficient at design shaft speed

Type:: float

mc_rho_in

Compressor inlet density [kg/m3]

Type:: float

mc_tip_ratio_des

Compressor design stage tip speed ratio

Type:: sequence

pc_D

Precompressor stage diameters [m]

Type:: sequence

pc_N_des

Precompressor design shaft speed [rpm]

Type:: float

pc_P_in_des

Precompressor inlet pressure [MPa]

Type:: float

pc_T_in_des

Precompressor inlet temperature [C]

Type:: float

pc_W_dot

Precompressor power [MWe]

Type:: float

pc_cooler_P_in

Intermediate pressure cross flow cooler inlet pressure [MPa]

Type:: float

pc_cooler_T_in

Intermediate pressure cross flow cooler inlet temperature [C]

Type:: float

pc_cooler_UA

Intermediate pressure cross flow cooler conductance [MW/K]

Type:: float

pc_cooler_W_dot_fan

Intermediate pressure cooler fan power [MWe]

Type:: float

pc_cooler_cost_bare_erected

Intermediate pressure cooler cost equipment and install [M$]

Type:: float

pc_cooler_cost_equipment

Intermediate pressure cooler cost equipment [M$]

Type:: float

pc_cooler_m_dot_co2

Intermediate pressure cross flow cooler CO2 mass flow rate [kg/s]

Type:: float

pc_cooler_q_dot

Intermediate pressure cooler heat transfer [MWt]

Type:: float

pc_cost_bare_erected

Precompressor cost equipment plus install [M$]

Type:: float

pc_cost_equipment

Precompressor cost equipment [M$]

Type:: float

pc_eta_stages_des

Precompressor design stage isenstropic efficiencies

Type:: sequence

pc_ideal_spec_work_des

Precompressor ideal spec work [kJ/kg]

Type:: float

pc_m_dot_des

Precompressor mass flow rate [kg/s]

Type:: float

pc_n_stages

Precompressor stages

Type:: float

pc_phi_des

Precompressor design flow coefficient

Type:: float

pc_phi_surge

Precompressor flow coefficient where surge occurs

Type:: float

pc_rho_in_des

Precompressor inlet density [kg/m3]

Type:: float

pc_tip_ratio_des

Precompressor design stage tip speed ratio

Type:: sequence

piping_inventory_etc_cost

Cost of remaining cycle equipment on BEC basis [M$]

Type:: float

q_dot_HTR

High temp recuperator heat transfer [MWt]

Type:: float

q_dot_LTR

Low temp recuperator heat transfer [MWt]

Type:: float

q_dot_PHX

PHX heat transfer [MWt]

Type:: float

rc_D

Recompressor stage diameters [m]

Type:: sequence

rc_N_des

Recompressor design shaft speed [rpm]

Type:: float

rc_P_in_des

Recompressor inlet pressure [MPa]

Type:: float

rc_P_out_des

Recompressor inlet pressure [MPa]

Type:: float

rc_T_in_des

Recompressor inlet temperature [C]

Type:: float

rc_T_out_des

Recompressor inlet temperature [C]

Type:: float

rc_W_dot

Recompressor power [MWe]

Type:: float

rc_cost_bare_erected

Recompressor cost equipment plus install [M$]

Type:: float

rc_cost_equipment

Recompressor cost equipment [M$]

Type:: float

rc_eta_stages_des

Recompressor design stage isenstropic efficiencies

Type:: sequence

rc_m_dot_des

Recompressor mass flow rate [kg/s]

Type:: float

rc_n_stages

Recompressor stages

Type:: float

rc_phi_des

Recompressor design flow coefficient

Type:: float

rc_phi_surge

Recompressor flow coefficient where surge occurs

Type:: float

rc_psi_des

Recompressor design ideal head coefficient

Type:: float

rc_psi_max_at_N_des

Recompressor max ideal head coefficient at design shaft speed

Type:: float

rc_tip_ratio_des

Recompressor design stage tip speed ratio

Type:: sequence

recomp_frac

Recompression fraction [-]

Type:: float

recup_LTR_UA_frac

Fraction of total conductance to LTR

Type:: float

recup_total_UA_assigned

Total recuperator UA assigned to design routine [MW/K]

Type:: float

recup_total_UA_calculated

Total recuperator UA calculated considering max eff and/or min temp diff parameter [MW/K]

Type:: float

recup_total_cost_bare_erected

Total recuperator cost bare erected [M$]

Type:: float

recup_total_cost_equipment

Total recuperator cost equipment [M$]

Type:: float

s_HTR_HP_data

Entropy points along HTR HP stream [kJ/kg-K]

Type:: sequence

s_HTR_LP_data

Entropy points along HTR LP stream [kJ/kg-K]

Type:: sequence

s_LTR_HP_data

Entropy points along LTR HP stream [kJ/kg-K]

Type:: sequence

s_LTR_LP_data

Entropy points along LTR LP stream [kJ/kg-K]

Type:: sequence

s_PHX_data

Entropy points along PHX stream [kJ/kg-K]

Type:: sequence

s_main_cooler_data

Entropy points along main cooler stream [kJ/kg-K]

Type:: sequence

s_pre_cooler_data

Entropy points along pre cooler stream [kJ/kg-K]

Type:: sequence

s_state_points

Cycle entropy state points [kJ/kg-K]

Type:: sequence

t_D

Turbine diameter [m]

Type:: float

t_N_des

Turbine design shaft speed [rpm]

Type:: float

t_P_in_des

Turbine design inlet pressure [MPa]

Type:: float

t_P_out_des

Turbine design outlet pressure [MPa]

Type:: float

t_T_out_des

Turbine outlet temperature [C]

Type:: float

t_W_dot

Turbine power [MWe]

Type:: float

t_cost_bare_erected

Tubine cost - equipment plus install [M$]

Type:: float

t_cost_equipment

Tubine cost - equipment [M$]

Type:: float

t_delta_h_isen_des

Turbine isentropic specific work [kJ/kg]

Type:: float

t_m_dot_des

Turbine mass flow rate [kg/s]

Type:: float

t_nu_des

Turbine design velocity ratio

Type:: float

t_rho_in_des

Turbine inlet density [kg/m3]

Type:: float

t_tip_ratio_des

Turbine design tip speed ratio

Type:: float