This document discusses different types of energy storage systems including superconducting magnetic energy storage (SMES), thermal energy storage (TES), and their applications. SMES stores energy in a superconducting coil's magnetic field and can quickly discharge stored energy back to the electric grid. TES temporarily stores thermal energy and can balance energy supply and demand. TES includes sensible heat storage using liquids, solids, or both, and latent heat storage using phase change materials. These storage systems provide benefits like clean power generation and mitigating renewable energy fluctuations.

2. Superconducting
Magnetic Energy Storage
 This System Stores Energy in magnetic field created
by flow of direct currents in a superconducting coil.
 The coil is cryogenically cooled to critical temperature.
 The stored energy can be released back to the network
by discharging the coil.

3. SMES Diagram

4. Benefits of SMES Over Other Storage
 Time delay during charge and discharge is quite short.
 Loss of power is less
 High reliability.

5. Application
 To provide very clean power in microchip
manufacture.
 Suitable to mitigate the negative impacts of renewable
energy in power quality related issues.

6. Thermal Energy Storage
 TES is helpful for balancing between the supply and
demand of energy
 Thermal energy storage (TES) is defined as the
temporary holding of thermal energy in the form of
hot or cold substances for later utilization.

7. Classification
 Sensible Heat Storage.:-
i. Liquid Media Storage
ii. Solid Media Storage
iii. Dual Media Storage
 Latent Heat Storage.

8. Sensible Heat Storage
 In this type , thermal energy is stored by virtue of heat
capacity and change in temperature
 When energy is absorbed temperature of storage
material rises and when energy is withdrawn
temperature drops.
 Based on Storage media it is classified as:-

9. Liquid Media Storage
 Water is considered to be the most suitable liquid
media storage because
 It is easy to handle
 High density, good thermal conductivity
 It can be used as a storage medium or working
medium
 Control of water system is flexible

10. Short Term Thermal Energy
Storage
Long Term Thermal Energy
Storage

11. Solid Medium Storage
 It is called Packed bed storage.
 It utilises the heat capacity of a bed of loosely packed
solid material to store energy
 Here energy can be used at low or high temperature

12. Packed Bed Storage Unit

13. Advantages
 Rocks are abundant, low cost, non toxic
 High storage temperature are possible
 No freezing or boiling problem
 No corrosion problem,

14. Disadvantages
 Storage volume is very large
 High pressure drop takes place
 Simultaneous Charging and Discharging is not
possible

15. Dual Medium Storage
 In this both liquid and Solid sensible heat storage
material are used
 These slid and liquid material may be combined in
number of ways
 One of them is to jointly use the bed rock and water
tank

16. Latent Heat Storage
 In this energy is stored
by virtue of latent
change of phase of
storage medium
 The phase changing
material have higher
thermal storage density
 This type of system are
more compact than
sensible heat storage
system

17. Contd.
 Different type of phase changes that
 Solid-solid
 Solid gas
 Solid liquid
 Liquid Gas

18. Application
 Thermal storage of solar energy
 Passive storage in bioclimatic building/architecture
 Temperature maintenance in rooms with computers
or electrical appliances.
 Thermal protection of food

19. Thank You