Felix Tellez - SFERA

Operating TemperaturaThermodinamic CycleAvailability of HeatstorageSTE with Central Receiver Systems F. TéllezDistinguished by the heat transfer fluid, there are threeCRS options in competence:Direct SteamGeneration< 290º C Saturated290-550 ºC Superheated550-650 ºC SupercríticRankine(or integration aspreheating in CC)¿!Presurized steam vesel~ 30 mintos(Nitrate) MoltenSaltsAtmospheric &Presurized Air565 ºC 750-900ºCRankine(or integration aspreheating in CC)YesTwo tanks(hot/cold) ~15 hRankine / Brayton(or integration in topof CC)YesPebbles Beds(termocline) ~3 hCapacity Factor (full loadequivalent) 2.200 h/year 2200 - 5.700 3.500 h/yearh/yearOverall Annual13-16 % 14-18 % 14-18 %EfficiencyEstimated cost ofelectricityCommercial Situation(actuales / potenciales)0,17-0,23€/kWh-aPS10, PS20 (Saturado),eSolar (Sobrec.)Brightsource E (Supercrit.)0,14-0,17€/kWh-aGemasolar/SolarTresRockedyne/SolarReserveAbu-Dhabi?0,13-0,16 ¿?€/kWh-a(1ª versión PS10)Pending ¡!Slide 46