TN2013000047A1 - Method for operating a solar-heated continuous flow steam generator and solar-thermal continuous flow steam generator
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Method for operating a solar-heated continuous flow steam generator and solar-thermal continuous flow steam generator
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Priority claimed from PCT/EP2011/064466external-prioritypatent/WO2012028495A2/en
Application filed by Siemens AgfiledCriticalSiemens Ag
Publication of TN2013000047A1publicationCriticalpatent/TN2013000047A1/en
Vaporization, Distillation, Condensation, Sublimation, And Cold Traps
(AREA)
Abstract
The invention relates to a method for operating a solar-heated continuous flow steam generator comprising an evaporator heating surface (4), whereby a target value (formula (II)) for the supply water mass flow (I) is fed to a device for adjusting the supply water mass flow (formula (I)). In order to further improve the quality of a predictive supply water or mass flow control and to maintain the enthalpy of the flow medium at the evaporator outlet particularly stable especially when load changes occur, a correction factor (Kf) is taken into consideration during production of the target value (II) for the supply water mass flow (I), said correction faction being characteristic of the temporal derivative of enthalpy, the temperature or the density of the flow medium at the inlet of one or more heating surfaces (2, 4). Said method is particularly suitable for operating a solar-thermal continuous flow steam generator (1) in a solar tower power station (129) with direct evaporation.
TNP2013000047A2011-08-232013-02-07Method for operating a solar-heated continuous flow steam generator and solar-thermal continuous flow steam generator
TN2013000047A1
(en)
Elevation of the city water supply temperature by 1 to 10 deg c to absorb excess renewable energy and maintain minimum power demand to avert grid instability, while also reducing ghg emissions on account of subsequent lower water heater energy consumption in homes and buildings.