Energy Storage Systems

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Questions and Answers

What is the purpose of carbon captured from CO2 in the production of synthetic natural gas?

  • To be used as an energy carrying content in natural gas
  • To produce electricity through fuel cells
  • To be converted into methane as part of the SNG production process (correct)
  • To store thermal energy

What is the primary purpose of thermal storage systems?

  • To produce synthetic natural gas
  • To store electrical energy as heat (correct)
  • To convert heat into chemical energy
  • To generate electricity through steam turbines

What is the resulting energy carrying content in synthetic natural gas?

  • Hydrogen
  • Methane (correct)
  • Thermal energy
  • Carbon dioxide

What type of reaction is used to retrieve energy from thermo-chemical storage?

<p>Reversed chemical reaction (A)</p> Signup and view all the answers

What type of material is typically used in thermo-chemical storage?

<p>Salt (D)</p> Signup and view all the answers

What is the advantage of thermal storage over conventional steam turbines?

<p>Faster response time (D)</p> Signup and view all the answers

What is the primary reason for energy storage?

<p>To use energy at a different time than when it was generated (C)</p> Signup and view all the answers

What is the main advantage of pumped hydro storage?

<p>Maturity and global capacity share (A)</p> Signup and view all the answers

What is compressed air energy storage (CAES) used for?

<p>Storing energy through compressed air (C)</p> Signup and view all the answers

Why is energy storage important for renewable energy sources?

<p>To use energy at a convenient time (C)</p> Signup and view all the answers

What is the purpose of load regulation?

<p>To respond to small changes in demand (A)</p> Signup and view all the answers

What is energy arbitrage?

<p>Storing energy during low demand and releasing it during high demand (A)</p> Signup and view all the answers

What is the primary function of an air liquefier in a Liquid Air Energy Storage (LAES) system?

<p>To convert electrical energy into liquid air (A)</p> Signup and view all the answers

What is the principle behind the reduction of rotational speed of a flywheel when extracting energy?

<p>Conservation of energy (B)</p> Signup and view all the answers

What is the typical response time of a Flywheel Energy Storage (FES) system?

<p>Milliseconds to seconds (C)</p> Signup and view all the answers

What is the primary function of a modern electrolyser in a Hydrogen Storage system?

<p>To split water into hydrogen and oxygen through electrolysis (C)</p> Signup and view all the answers

What is the primary mechanism of sensible thermal storage?

<p>Changing the temperature of a storage medium (B)</p> Signup and view all the answers

What is the main advantage of latent thermal storage materials over sensible thermal storage materials?

<p>Higher storage capacity within a small temperature range (D)</p> Signup and view all the answers

What is the purpose of insulated vessels in a Liquid Air Energy Storage (LAES) system?

<p>To store the liquid air (A)</p> Signup and view all the answers

Which type of storage technology is used to store energy through electrochemical reactions?

<p>Electro-chemical storage batteries (C)</p> Signup and view all the answers

What is a common application of Flywheel Energy Storage (FES) systems?

<p>Frequency control (D)</p> Signup and view all the answers

What is the main characteristic of super capacitors that sets them apart from conventional capacitors?

<p>Higher energy storage capacity (D)</p> Signup and view all the answers

Which type of thermal storage generates steam for reelectrification purposes?

<p>Sensible thermal storage (A)</p> Signup and view all the answers

What is the only pure electrical storage technology mentioned in the text?

<p>Super capacitors (C)</p> Signup and view all the answers

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