19 06 2023 Practical solution

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Tmin 300 °C TES Capacity (eq. hours) 7 h Tmax 555 °C c molten salts 1.52 kJ/kg/K Wnet_SteamCycle 30 MW density molten salts 1804 kg/m3 Power block efficiency 0.39 - h_working 4000 h Tamb 35 °C opt_eff_average 0.59 - receiver D 8 m DNI_average 710 W/m2 receiver H 11 m eta_clean 0.93 - n° Heliostats 2550 Heliostat relfective surface 120 m^2 eta_opt 0.66 - Receiver. Specifi losses 35 kW/m2 Design DNI 800 W/m2 h_heat trasnfer 75 W/m2/K Surface receiver 276.46 m2 Thermal loss receiver 9676.11 kW Th. Power absorbed by receiver 161568.00 kW Th. Power transferred to HTF 151891.89 kW thermal efficiency (receiver) 0.940 - Total surface heliostats 306000 m2 Th. Power input in PB design 76923.08 kW SM (Solar Multiple) 1.97 - Average Temperature receiver 501.67 °C TES capacity 538.5 MWh 1938461.5 MJ TES Volume 2772.3 m3 DNI_eff 389.5770 W/m2 Average thermal efficiency 0.9188 - Annual electricity 170873.8 MWhel Annual solar energy available 869040 MWh Annual Effciency (sun_to_el) 0.1966 - ASSUMPTIONS P1 22 bar x1 0.1 - Pcond 0.07 bar P2 11 bar Wnet 7.8 MW Paux 440 kW eta_is_TV 0.81 - eta_mecc-el 0.95 - hEq 7800 h CASE A CASE B Exp. Power 8.674 MW c_H2O 4.2 kJ/kg/K Exp. Power (ideal) 10.708 MW η_|| 0.53 - s_out_ST_is 6.552 kJ/kg/K Outlet T fromo ORC 80 °C 353.15 K x_out_is (ST) 0.78 - minimum Reinjection T 55 °C h_out_is (ST) 2041.91 kJ/kg m_liq from flash chamber 71.581 kg/s ∆his 738.76 kJ/kg Tin_liq in ORC 184.070 °C 457.22 K ∆h_reale 598.393 kJ/kg h_out_reale 2182.274 kJ/kg Tml (mean log T) 402.95 K x_out_reale 0.838 - 129.80 °C m_vap_ST 14.495 kg/s ηLorentz 0.23 - h_in_flash 1117.903 ηreale 0.12 - x_out_flash 0.168 - ∆T 104.07 °C m_geofluid 86.076 kg/s Th. Power input ORC 31287.56 kW El. Power output ORC 3736.53 kW El. Power (Compl. system) 11.54 MW Max. Th. Power available…