Sensitivity analysis and dynamic modelling of the reinjection process in a binary cycle geothermal power plant of Larderello area

The surface equipment design for a binary cycle geothermal power plant including facilities required the and complete reinjection process of two-phase fluid (H2O + non-condensable gases (NCGs)) in Castelnuovo area Larderello are modelled. proposed scheme includes configuration closed-loop plant, NCGs compression train at wellhead. Steady-state dynamic simulations performed. steady-state model is developed to find correct operating solutions conditions, while investigates unsteady behaviour system. study sensitivity analysis design, demonstrating effect internal external variables on system performance, cycle, process. maximum compressor consumption (at 60 bar pressure) 176 kW 8% CO2 mass fraction into fluid. startup its response step-changes flow stream condition assessed: it found that average response-time about 20 min. Also, requires drain pressure higher than saturation level effective reinjection. A new Antoine – based correlation water-CO2 mixture applications.