Selection criteria of optimal separation pressure of liquid dominated geothermal resources
Marco Snaidero, Federico Minoli, Marco Frassinetti
Session: Poster session & Welcome drinks
Session starts: Wednesday 13 September, 17:30
Marco Snaidero ()
Federico Minoli ()
Marco Frassinetti ()
The purpose of this paper is to define the main selection criteria of the separation pressure for geothermal binary power plants to maximize the efficiency of the system. Separation pressure is one of the main parameters that defines temperature, flow and brine/steam ratio of the geothermal resource and thus it is a key point for its proper exploitation. Considering the specific constraints of each resource, it should be optimized to ensure the maximum power production with a proper cycle design. On typical resources for binary plants, an analysis has been performed to evaluate the effect of different separation pressure on cycle selection. Following, a simulation of the off design conditions of the ORC has been performed to understand the behavior of the overall system varying the separation pressure, in order to obtain a set of data useful for the cycle assessment of geothermal projects.