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The principle that wet scrubber efficiency depends chiefly on the power expended in gas-liquid contact is the _____ power principle.

  • A.collection
  • B.impaction
  • C.specific
  • D.contacting

Answer: D

It holds across scrubbers of quite different geometry, which makes it a remarkably general result. Its practical meaning is that fine particle collection in a wet device cannot be had without paying for it in pressure drop.

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