METHOD FOR OPERATING A THERMOELECTRIC SOLAR PLANT

• Main Authors: MÉNDEZ MARCOS, JOSÉ MARÍA, DIAGO LÓPEZ, MAITE, OLAVARRÍA RODRÍGUEZ-ARANGO, RAFAEL
• Format: Patent
• Language: English; French; German
• Published: 27.05.2015
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOTOTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISEPROVIDED FOR; METHODS OF STEAM GENERATION; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; SPRING, WEIGHT, INERTIA OR LIKE MOTORS; STEAM ACCUMULATORS; STEAM BOILERS; STEAM ENGINE PLANTS; STEAM ENGINES; STEAM GENERATION; WEAPONS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

SUMMARY Method of operating a solar thermoelectric power plant that allows operation of high-, medium- and low-pressure superheating turbines with both superheated steam and saturated steam. The plant needs to have energy storage in high-pressure steam tanks. The method described allows the direct introduction of saturated steam into a superheated steam turbine. This steam receives an intermediate reheating between the high-pressure turbine and the low- and medium-pressure turbines to achieve conditions of superheated steam. The mode of operation proposed in the invention facilitates the operation of the plant in periods without sunshine (during transient periods, such as passing clouds or night time) or during discharge of accumulators (saturated steam tanks at high-pressure).