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The adaptive approach to thermal comfort recognises that acceptable indoor temperature

  • A.is the same in every climate and season
  • B.depends only on the air temperature
  • C.must be held within half a degree
  • D.varies with the prevailing outdoor conditions

Answer: D

Occupants of a naturally ventilated building in a warm month accept and prefer higher temperatures than the same people in winter, so a fixed set point over-cools in summer. Allowing the set point to drift with the season is a large and free saving.

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