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Ice storage holds more cooling per cubic metre than chilled water storage because it exploits

  • A.the latent heat of fusion of water
  • B.the higher specific heat of ice
  • C.the greater density of ice than water
  • D.the lower temperature of the ice store

Answer: A

The 334 kilojoules per kilogram of fusion dwarfs the sensible heat available over a chilled water swing of a few degrees, so the tank is several times smaller. The penalty is a lower evaporating temperature and a poorer chiller efficiency.

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