Molten salt energy storage is divided into two working processes: heat storage and heat release. Thermal storage process: an intelligent complementary system is used to use wind power, photovoltaics, off-peak nighttime energy and industrial waste heat as energy sources to heat molten salt and store renewable energy or l off-peak energy by heating molten salt. . Heat release process: In the heat exchange system, the high temperature molten salt exchanges heat with water to generate water vapor, which drives the turbine and generates energy. electricity outside. Molten salt energy storage systems are often coupled with photovoltaic, wind, nuclear and other systems.
Disadvantages of molten salt tower solar thermal power plants
Heat storage at high temperatures and athigh heat transfer is widely used in solar thermal power generation, nuclear power and gas turbines. Blade cooling and other high temperature thermal energy conversion and some industrial projects at high temperature. In recent years, molten salt heat transfer and storage technology has been widely used in solar thermal power generation and high-temperature industrial processes.
High temperature mixed molten salt has the advantages of good heat transfer performance, low working pressure, wide liquid temperature range,
p>high operating temperature, low cost, safety and reliability, etc. It is a highly efficient high temperature prospective transfer thermal storage working fluid. High temperature heat transfer by molten salts has been applied innuclear power, solar thermal power generation and high temperature process industries.
In addition, large-scale thermal storage of molten salt can also be used in storage stations independent molten salt thermal systems for electrical energy storage, peak storage in thermal power plants, mobile thermal storage, intermittent use of high temperature waste heat and low temperature electricity. heating
Molten salt thermal storage heating and other fields have good application prospects.
In a molten salt system that uses molten salt as a heat storage medium or a heat transfer medium, the molten salt pump is one of the most critical equipment it needs . In the long term, it can work reliably in the temperature range of 220℃~550℃. The Warwick molten salt pump peu provide detailed technical assistance in all aspects such as design, material selection and process.
The freezing point is high, and binary and ternary molten salts are between 120 and 220 ℃. The molten salt tower solar thermal power plant is located in the optoelectronic industrial park in Dunhuang City, Gansu Province. It is independently designed, invested and built by Chinese companies. The disadvantage is that the freezing point is high and binary and ternary fade. the salts are at 120-220°C. Therefore, when constructing the site, we need to think about how to prevent the molten salt from solidifying. Salts are too reactive, and at higher temperatures, higher, more expensive materials must be used.