Substance composition, preferably heat carrier medium obtainable by heating different substances present in solid or liquid phase, determining partial phase transition and removing solid or liquid phase, useful in solar thermal power plants

摘要

Substance composition (102), preferably heat carrier medium or heat-storage medium, is claimed. The substance composition is obtainable by providing a mixture made of at least two substances different from each other, which respectively are present in the solid or liquid phase; heating the mixture; determining a partial phase transition from solid phase to liquid phase or from liquid phase to solid phase; and removing the liquid phase from the remaining mixture, which is present in the solid phase, or removing the solid phase from the remaining mixture, which is present in the liquid phase. Substance composition (102), preferably heat carrier medium or heat-storage medium, is claimed. The substance composition is obtainable by providing a mixture made of at least two substances different from each other, which respectively are present in the solid or liquid phase; heating the mixture; determining a partial phase transition from the solid phase to the liquid phase or from liquid phase to solid phase; and removing the liquid phase from the remaining mixture, which is still present in the solid phase, or removing the solid phase from the remaining mixture, which is still present in the liquid phase, where the quantity ratio of at least two substances different from each other is obtainable by determining the quantity ratio of at least two substances in the composition, which includes preparing the above mentioned composition, and determining the quantity ratio of at least two substances. An independent claim is also included for an apparatus (100) for preparing the above mentioned composition, comprising a receiving device (104) for the mixture of at least two different substances, which are respectively in the solid phase or liquid phase, a heater (106), a sensor device for detecting the partial phase transition, and a removal device (108) for removing the liquid phase from the remaining mixture, which is still present in the solid phase, or for removing the solid phase from the remaining mixture, which is still present in the liquid phase.