Method of generating superheated steam in a solar thermal power plant and solar thermal power plant
AssigneeDeutsches Zentrum fuer Luft- und Raumfahrt e.V.
InventorsJan Fabian FELDHOFF, Markus ECK
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Abstract
A method of generating superheated steam in a solar thermal power plant is provided, in which in a flow section for heat transfer medium steam is generated by solar energy in an evaporator zone and the steam is superheated by solar energy in a superheater zone. An evaporation end point of the evaporator zone is fixed in position in a control method, in which a spatial temperature gradient in the superheater zone and a temperature in the evaporator zone are determined and the mass flow of heat transfer medium in the flow section is adjusted in dependence upon the temperature gradient and the measured temperature in the evaporator zone.
Claims21
A method of generating superheated steam in a solar thermal power plant, in which in a flow section for heat transfer medium steam is generated by solar energy in an evaporator zone and the steam is superheated by solar energy in a superheater zone, comprising:
- fixing in position an evaporation end point of the evaporator zone in a control method, in which a spatial temperature gradient in the superheater zone and a temperature in the evaporator zone are determined and the mass flow of heat transfer medium in the flow section is adjusted in dependence upon the temperature gradient and the measured temperature in the evaporator zone.
A solar thermal power plant having a steam generating stage, comprising:
- at least one collector branch having a flow section for heat transfer medium comprising an evaporator zone and a superheater zone;
- a first temperature sensor that is disposed at the evaporator zone;
- a second temperature sensor and a third temperature sensor that are disposed spaced apart from one another at the superheater zone;
- a mass flow control device, by means of which the mass flow of heat transfer medium in the flow section is adjustable;
- and
- a control device that is connected in a signal effective manner to the first temperature sensor, the second temperature sensor and the third temperature sensor, determines from a second temperature and a third temperature a spatial temperature gradient and controls the mass flow control device in order to fix an evaporation end point.
Dependencies are inferred from the claim text.