Method for generating steam with concentrated solar radiation and solar apparatus therefor

• Main Authors: KEINTZEL; GUENTER, SCHMITZ-GOEB; MANFRED, OLDENBURG; HORST-DIETER, DINSTUEHLER; KARL-HEINZ
• Format: Patent
• Language: English
• Published: 18.05.1999
• Edition: 6
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; GAS-TURBINE PLANTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; 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; RANGES; SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS; SPRING, WEIGHT, INERTIA OR LIKE MOTORS; STEAM BOILERS; STEAM GENERATION; VENTILATING; WEAPONS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

The method for generating steam with concentrated solar radiation includes the step of heating an absorber by solar radiation and directing a stream of air through the absorber to produce a heated air. The heated air is guided through a heat storage device provided for compensating short-term temperature fluctuations. Steam is generated with the heated air and is thereby cooled. At least a portion of the cooled air is returned to the upstream side of the absorber. The device for preforming the method includes a tower having an air heating device with a solar radiation absorber connected to the top of the tower. An air inlet for introducing air into the air heating device is provided. A steam generator is connected to the tower downstream of the air heating device. A heated air channel is arranged at the tower for guiding the heated air from the air heating device to the steam generator. A blower is connected to the tower downstream of the steam generator and a connecting line connects the steam generator to the blower. A return line is arranged at the tower for connecting the blower to the air inlet and returning at least a portion of the cooled air to the air heating device.