In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the ______________ number ?
Correct answer: A. Lewis
- A. Lewis
- B. Grashoff
- C. Sherwood
- D. None of these
Explanation
The Lewis number compares thermal diffusivity with mass diffusivity and therefore represents the relationship between heat and mass transfer rates in systems such as cooling towers. Grashof and Sherwood numbers describe natural convection and mass-transfer convection, respectively.
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