A bag house is to be designed to handle 1000 m3/min of air. The filtration takes place at constant pressure so that the air velocity through each bag decreases during the time between cleaning according to the relation \(u = \frac{1}{{0.267 + 0.08t}}\) where, u is in m/min of cloth and t is the time in min. The bags are shaken in sequence row by row on a 30 min cycle. Each bag is 20 cm in diameter and 3 m height. The bag house is to be square in cross-section with 30 cm spacing between bags and 30 cm clearance from the walls. Calculate the minimum number of bags required.

A bag house is to be designed to handle 1000 m3/min of air. The filtra

1.	A bag house is to be designed to handle 1000 m3/min of air. The filtration takes place at constant pressure so that the air velocity through each bag decreases during the time between cleaning according to the relation \(u = \frac{1}{{0.267 + 0.08t}}\) where, u is in m/min of cloth and t is the time in min. The bags are shaken in sequence row by row on a 30 min cycle. Each bag is 20 cm in diameter and 3 m height. The bag house is to be square in cross-section with 30 cm spacing between bags and 30 cm clearance from the walls. Calculate the minimum number of bags required.
A.	663
B.	753
C.	553
D.	853
Answer» D. 853