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Enegy Storage System - Coggle Diagram
Enegy Storage System
High Power and High Capacity
Pump Hydro
High Capacity and Low Cost for Energy Storage Application
Site Specific Requirement
Reliable and well developed
Off-peak hour pump water into reservoir and flow reverse during peak demand
Flow Battery
Power and storage capacity are decoupled, Power determined by cell size and energy storage determined by tank size
Vanadium Redox : electrolyte separated by proton exchange membrane
Zinc Bromide: energy stored by plating zin metal on anode to charge
High Capacity but Low Energy Density
Sodium Sulfur Battery
High Power and Energy density,High Efficiency
High Production Cost, Safety Concern (300 T)
Energy stored when Sodium Sulphide decompose and Na moves back. Discharge when NA move to electrode and one e- flow through the circuit.
Compressed Air Storage
High Capacity Low Cost
Require fuel input and site specific requirement
Li Ion Battery : Lithium Ion move to positive electrode when discharging
High power, energy density and efficiency ( Not for energy storage)
High cost and require special charging circuit
Lead Acid
Low cost
Limited Life Cycle when deeply discharged
High Power and Fast Response
Fly wheels
High Power and Low Energy Density, and 90% Efficiency
Regenerative Braking : Using generator converting kinetic to eletricty energy
Electric Double Layer Capacitor : Energy stored as eletric charge
Long Life Cycle and High Efficiency (95%)
Low Energy Denstiy