Energy Storage Options - II — Lesson 2

This lesson covers the various types of energy storage, including mechanical, electromechanical, electrochemical, electrical, chemical, and thermal. It explains how these storage types work, their applications, and their efficiencies. The lesson also discusses the principle of operation for these systems, which involves converting one form of energy to another. For example, in a mechanical energy storage system, potential energy is converted to kinetic energy, which is then converted to electrical energy. The lesson also touches on the advantages and disadvantages of these energy storage types.

Video Highlights

00:19 - Types of energy storage and their explanation
10:40 - Detailed explanation of pumped hydro energy storage, including its advantages and disadvantages
15:24 - Detailed explanation of flywheel energy storage, including its advantages and disadvantages
21:03 - Detailed explanation of compressed air energy storage, including its advantages and disadvantages

Key Takeaways

- Mechanical energy storage systems, such as pumped hydro and flywheel, convert potential energy to kinetic energy and then to electrical energy.
- Electrochemical energy storage devices, like lithium-ion batteries, convert electrical energy to chemical energy and vice versa.
- Electrical energy storage systems, such as supercapacitors and superconducting magnetic energy storage, store energy in capacitive or inductive forms.
- Chemical energy storage, like fuel cells, convert one form of energy to another.
- Thermal energy storage uses heat to store energy, which can be divided into latent heat and sensible heat storage.
- The efficiency of these systems varies, with mechanical systems having around 60-70% efficiency.