High Temperature Molten Salt Thermal Energy Storage Systems For Solar Applications

High temperature molten salt thermal energy storage systems for solar applications.

High temperature molten salt thermal energy storage systems for solar applications.

The drake landing solar community in alberta canada has now achieved a year round 97 solar. Candidates for thermal energy storage tes applications judith c. These salts are composed of fluoride chloride and nitrate salts. Hence this chapter focused on physicochemical properties of molten alkali nitrate salts and their mixtures.

At the time of writing high temperature molten salt tes systems for csp applications utilize almost exclusively molten nitrate salts e g 60 wt nano 3 and 40 wt kno 3 so called solar salt. Thermocline high temperature latent heat storage for high power levels and thermochemical reactions that can store heat loss free. It is beginning to be recognized that thermal energy storage is an enabling and cross. Properties of molten salt systems at high temperatures is currently incomplete or contradictory.

Low temperature collectors are generally unglazed and used to. For advanced solar thermal energy storage applications at 540 to 870 c 1004 to 1600 f and steam rankine. Solar thermal collectors are classified by the united states energy information administration as low medium or high temperature collectors. Fact sheets created by the german energy storage association or bves for short show that molten salt tanks are around 33 times less expensive than.

Milestone report nrel tp 5500 51446. The evolution of the energy system has furthermore led to new possibilities for the usage of heat. Cost effective energy storage is key to transitioning to a low carbon society. Energy can be stored in the form of heat or electricity.

A popular storage method for high temperature thermal applications is a molten salt tank. Experimental results of compatibility screening studies of 100 salt containment thermal conductivity enhancement tce combinations for the high temperature solar thermal application range of 704 deg to 871 c 1300 to 1600 f are presented. And output temperature of the energy storage equipment is determined by the melting point of the. Nine candidate containment hx alloy materials and two tce materials were tested with six candidate solar thermal alkali and alkaline earth carbonate.

Molten salts sometimes referred to as salt melts are a family of products used for a wide range of applications like high temperature process heating heat treating and annealing of steel and thermal storage in solar thermal power plants. Most practical active solar heating systems provide storage from a few hours to a day s worth of energy collected.