in Air Pollution recategorized by
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It was decided to construct a fabric filter, using bags of $0.45$ m diameter and $7.5$ m long, for removing industrial stack gas containing particulates. The expected rate of airflow into the filter is $10 \: m^3/s$. If the filtering velocity is $2.0$ m/min, the minimum number of bags (rounded to nearest higher integer) required for continuous cleaning operation is

  1. $27$
  2. $29$
  3. $31$
  4. $32$
in Air Pollution recategorized by
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