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Sensible heat storage stores energy by

  • A.raising the temperature of a material
  • B.melting or freezing a material
  • C.driving a reversible chemical reaction
  • D.compressing a fluid within a vessel

Answer: A

Correct answer: raising the temperature of a material

Sensible heat storage holds energy in the temperature rise of a medium - water, rock, molten salt, concrete - and the quantity is \( mc\Delta T \). It is simple and cheap, but the store is only useful over the temperature range available and it loses heat continuously to its surroundings. Latent storage, which uses a phase change, holds more in a smaller volume and at a nearly constant temperature.

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