4. Molten salts
4.1 Main heat transfer fluids. Physico-chemical properties
The most common molten salts are formed from sodium nitrite (NaNO 2 ), sodium nitrate (NaNO 3 ) and potassium nitrate (KNO 3 ). Their main advantages are that they can operate at atmospheric pressure for temperatures between 150 and 550°C. Taken separately, these salts are only liquid above 300°C, but eutectics with significantly lower melting points can be produced.
The most common eutectics are in mass composition:
a mixture of 40% sodium nitrite, 53% potassium nitrate and 7% sodium nitrate. This mixture, known as HTS1...
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Molten salts
Liquid metals
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