Modifications within Model 1b and 2b

Outlined here are some major modifications of the Model 2a SSC code.

csp_solver Changes

Major changes to csp_solver include:

• creating a new csp_dual_indirect_solver that is a child of csp_dual_solver

• Added new input dispatch target: fraction of nuclear output going to TES

• New input parameters:

  • Steam-to-salt HX effectiveness

  • Salt-to-steam HX effectiveness

• Two HTF fluids:

  • CSP and TES use salt as before

  • PC and LFR use #4 - steam

• Calculating design points using enthalpies rather than specific heat formula

csp_solver_pc_Rankine_indirect_224 Changes

• Calculating design points using enthalpies rather than specific heat formula

• Using water_props class instead of HTFProperties to get steam properties

csp_solver_nuclear Changes

• Calculating design points using enthalpies rather than specific heat formula

• Using water_props class instead of HTFProperties to get steam properties

csp_solver_mono_eq_methods Changes

Need to:

• Add 2 HX models within mass flow solvers to calculate:

  • salt mass flow from LFR to hot tank

  • steam mass flow through TES dispatch

• Recombine steam mass flows through LFR and through TES before calling PC method