230830 Practical Solution

Pagina 1

EXERCIZE 1 h in 198.5 kJ/kg QinPowerBlock 227.27 MW hout 3492.7 kJ/kg hin_coll 196.45 kJ/kg rend ott/term 0.66 - hout_coll 3497.30 kJ/kg perdite piping liq. 0.5 °C massFlow 68.85 kg/s perdite piping steam 2 °C QlossPiping 457.87 kW Wnet 75 MW Qcoll 227.73 MW eta_net 0.33 - Qsol_SF 345.05 MW h_sat 1154.25 kJ/kg eta_sun-to-el 0.22 - fractionSF_liquid 0.27 - Area_SF 440893 m2 thermal eff. Eco 95 % Area Eco 26 % EE 135000.00 MWh thermal eff. eco 95 % InvCostEquipment 154928514 € DNI 900 W/m2 InstallationCost 38732129 € DHI 130 W/m2 LCOE 158.45 €/MWh SM 1.15 - cpLiq 4.1 kJ/kg/K Dh_liq 957.80 kJ/kg cpVap 2.3 kJ/kg/K Qfluid_request 65.95 MW DTliq 0.5 °C Qsol_liq 89.71 MW DTvap 2 °C Etas_sol-to-th 0.74 - heq 1800 h eta_opt 0.77 - specInvCost_SF 200 €/m2 specInvCostPB 890 €/kW InstalCost 0.25 - CRF 0.1 - O&M 15 €/MWh INPUT RESULTS EXERCIZE 2 INPUT mass flow geofluid 320 t/h 88.889 kg/s T geofluid 180 °C h geofluid 763.7 kJ/kg P flash 1.5 bar P reinject 15 bar Eta is ST 0.81 - Eta mecc-el ST 0.945 - P aux CV 260 kW Eta hydr pump 0.76 - Eta mech-el pump 0.93 - T out HX 67 °C Cp liq. geo 4.4 kJ/kgK CO2 content 0.004 % wt Eta el, rif. 45% Eta th, rif. 90% spec. emission GN 200 g/kWh h eq el 8000 hours h eq th 5400 hours P sat T sat h liq.sat. s liq.sat. v liq.sat. h vap.sat s vap.sat. v vap.sat. [bar] [°C] [kJ/kg] [kJ/kgK] [m3/kg] [kJ/kg] [kJ/kgK] [m3/kg] 1.5 111 467.1 1.4335 0.00105 2693.1 7.2229 1.15936 0.08 42 173.9 0.5925 0.00101 2576.2 8.2274 18.09944 RESULTS Xv 0.1332 - m steam 11.84 kg/s Xv is 0.868 - h is 2260.2 kJ/kg Dh is 432.9 kJ/kg Dh real 350.7 kJ/kg h out_TV real 2342.4 kJ/kg P el 3925 kW m liq 77.0 kg/s Pel reinjection pump 185 kW Wel net 3480 kW Eel 27838 MWh Q th useful 15035 kW Eth 81186 MWh spec. emission CO2 367.8 g/kWh el spec. emission ref. 444.4 g/kWh Avoided…