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Scheduling energy intensive operations into a single continuous run rather than several short ones saves energy by reducing

  • A.the electrical demand during each run
  • B.the number of heat-up and cool-down cycles
  • C.the total mass of product processed
  • D.the temperature the process requires

Answer: B

Correct answer: the number of heat-up and cool-down cycles

Every start from cold puts energy into the furnace, the fixtures and the surroundings that is then lost when the plant cools, and none of it appears in the product. Consolidating several short runs into one continuous run pays that cost once instead of several times, and the saving grows with the thermal mass of the equipment.

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