Type of material used in thermal energy storage technology.
|List Options||Option Definition||Unit of Measure|
|Air||Air as a thermal medium is used for space heating or cooling.||None|
|Regular soil||Common soil||None|
|Domestic water||Domestic hot water is typically used for bathing, cooking, cleaning, and space heating.||None|
|Ice||Ice is usually stored to provide cooling services.||None|
|Molten salt||Molten salt is a means of storing heat at a high temperature. This is a current commercial technology used in conjunction with concentrated solar power for later use in electricity generation, to allow solar power to provide electricity on a more continuous basis. These molten salts (Potassium nitrate, Calcium nitrate, Sodium nitrate, Lithium nitrate, etc.) have the property to absorb and store the heat energy that is released to the water, to transfer energy when needed. To improve the salt properties it must be mixed in a eutectic mixture.||None|
|Not applicable||Not applicable||None|
|Pool water||Pool water heated by solar thermal collectors.||None|
|Rock||Rock storage material has thermal transfer medium characteristics include air, water and other phase-change materials.||None|
|Sand||Sand storage includes sand particles as the heat collector, heat transfer and thermal energy storage media.||None|
|Chemical oxides||Solar energy is stored chemically in reduced solid oxides. Heat is released at a constant temperature. Air is used as both the heat-transfer fluid and the chemical reactants. Oxide systems can be tailored to match input heat temperature.||None|
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