
The different kinds of thermal energy storage can be divided into three separate categories: sensible heat, latent heat, and thermo-chemical heat storage. Each of these has different advantages and disadvantages that determine their applications. storage (SHS) is the most straightforward method. It simply means the temperature of some medium is either increased or decreased. This type of storage is the most commerciall. [pdf]
Researchers from Solar Energy Institute at UPM are developing a new energy storage system in which the entry energy, either from solar energy or surplus electricity from a renewable power generation, is stored in the form of heat in molten silicon at very high temperature, around 1400 °C.
“In theory, this is the linchpin to enabling renewable energy to power the entire grid.” MIT engineers have designed a system that would store renewable energy in the form of molten, white-hot silicon, and could potentially deliver that energy to the grid on demand.
Molten salts can be employed as a thermal energy storage method to retain thermal energy. Presently, this is a commercially used technology to store the heat collected by concentrated solar power (e.g., from a solar tower or solar trough).
The new MIT storage concept taps renewable energy to produce heat, which is then stored as white-hot molten silicon. The U.S. researchers have dubbed the technology Thermal Energy Grid Storage – Multi-Junction Photovoltaics. The technology uses two large 10-meter wide graphite tanks, which are heavily insulated and filled with liquid silicon.
A novel system has been created that allows the storage energy in molten silicon which is the most abundant element in Earth's crust.
The sensible heat of molten salt is also used for storing solar energy at a high temperature, termed molten-salt technology or molten salt energy storage (MSES). Molten salts can be employed as a thermal energy storage method to retain thermal energy.

How do you calculate Spherical Capacitance?Step :1 Make a note of the inner and outer radius of the capacitor.Step 2: Calculate the relative permittivity, vacuum permittivity constants, and 4π as a product.Step 3: Subtract the reciprocal of the sphere's outer radius from the reciprocal of the sphere's inner radius.Step 4: To find the capacitance, divide the product by the subtracted value. [pdf]
This spherical capacitor calculator will help you to find the optimal parameters for designing a spherical capacitor with a specific capacitance. Unlike the most common parallel-plate capacitor, spherical capacitors consist of two concentric spherical conducting shells separated by a dielectric.
The capacitance of a spherical capacitor is calculated using the formula capacitance = dielectric constant * radius * radius / (Coulomb * (radius1 - radius2)), where radius1 (a) is the radius of the conducting sphere and radius2 (b) is the radius of the concentric conducting spherical shell. Capacitance of a Spherical Capacitor calculator uses this method to calculate the Capacitance.
As mentioned earlier capacitance occurs when there is a separation between the two plates. So for constructing a spherical capacitor we take a hollow sphere such that the inner surface is positively charged and the outer surface of the sphere is negatively charged. The inner radius of the sphere is r and the outer radius is given by R.
As a third example, let’s consider a spherical capacitor which consists of two concentric spherical shells of radii a and b, as shown in Figure 5.2.5. The inner shell has a charge +Q uniformly distributed over its surface, and the outer shell an equal but opposite charge –Q. What is the capacitance of this configuration?
Once again, we see that the capacitance C depends only on the geometrical factors, L, a and b. As a third example, let’s consider a spherical capacitor which consists of two concentric spherical shells of radii a and b, as shown in Figure 5.2.5.
The capacitance of a spherical capacitor can be calculated using the formula: capacitance = Dielectric constant*Radius of Sphere*Radius of shell/ (Coulomb* (Radius of shell-Radius of Sphere)). In this formula, the inner shell has a total charge +Q and the outer shell has a charge -Q.
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