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Which statement about the contacting power principle is TRUE?

  • A.Efficiency is independent of pressure drop
  • B.It applies only to venturi scrubbers
  • C.Similar power gives similar efficiency
  • D.Efficiency depends only on the liquid to gas ratio

Answer: C

The generality of the result is what makes it useful, since it says that no clever geometry escapes the energy requirement. Fine particle collection in a wet device must be paid for in pressure drop whatever the arrangement.

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