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The theoretical minimum energy for a process is useful as a benchmark because it

  • A.is the figure the best plant in the industry achieves
  • B.is prescribed for each sector by the regulator
  • C.bounds what any improvement could ever achieve
  • D.represents a target that a well run plant should reach

Answer: C

Knowing that the thermodynamic minimum is a third of current consumption says the opportunity is large; knowing it is nine tenths says the process is near its limit and effort belongs elsewhere. No real plant reaches it.

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