METHOD OF IMPROVING NITRATE SALT COMPOSITIONS FOR USE AS HEAT TRANSFER MEDIUM OR HEAT STORAGE MEDIUM

摘要

Method of maintaining or widening the long-term operating temperature range of a heat transfer medium and/or heat storage medium comprising a nitrate salt composition selected from the group consisting of alkali metal nitrate and alkaline earth metal nitrate and optionally alkali metal nitrite and alkaline earth metal nitrite, wherein all or part of the nitrate salt composition is brought into contact with an additive composed of a combination of elemental oxygen and nitrogen oxides.