High Temperature Molten Salt Thermal Energy Storage Systems For Solar Applications

These salts are composed of fluoride chloride and nitrate salts.

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

Most practical active solar heating systems provide storage from a few hours to a day s worth of energy collected. 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. 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. The drake landing solar community in alberta canada has now achieved a year round 97 solar.

Nine candidate containment hx alloy materials and two tce materials were tested with six candidate solar thermal alkali and alkaline earth carbonate. Low temperature collectors are generally unglazed and used to. Candidates for thermal energy storage tes applications judith c. Hence this chapter focused on physicochemical properties of molten alkali nitrate salts and their mixtures.

Solar thermal energy ste is a form of energy and a technology for harnessing solar energy to generate thermal energy for use in industry and in the residential and commercial sectors. However there are a growing number of facilities that use seasonal thermal energy storage stes enabling solar energy to be stored in summer for space heating use during winter. Energy can be stored in the form of heat or electricity. The evolution of the energy system has furthermore led to new possibilities for the usage of heat.

High temperature molten salt thermal energy storage systems for solar applications. Thermocline high temperature latent heat storage for high power levels and thermochemical reactions that can store heat loss free. Cost effective energy storage is key to transitioning to a low carbon society. 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. 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. For advanced solar thermal energy storage applications at 540 to 870 c 1004 to 1600 f and steam rankine. Properties of molten salt systems at high temperatures is currently incomplete or contradictory.

Solar thermal collectors are classified by the united states energy information administration as low medium or high temperature collectors. The results of comparative screening studies of candidate molten carbonate salts as phase change materials pcm for advanced solar thermal energy storage applications at 540 to 870 c 1004 to.