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A boiler is sized by adding the maximum steam demand of every consumer in the plant.

What is the likely consequence?

  • A.Steam pressure will be too low
  • B.The plant will use less fuel
  • C.The boiler will be oversized and inefficient
  • D.The boiler will be undersized

Answer: C

Correct answer: The boiler will be oversized and inefficient

The sum of individual peaks overstates the real maximum, because the consumers do not all peak together - which is what the diversity factor corrects. A boiler sized on the raw sum costs more to buy and runs at part load, where efficiency is poorer and cycling losses are higher.

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