Question 1 An electrostatic precipitator has 3 ducts with plates 12 ft long and 10 ft high. The plates are 8 inches apart. Assuming a drift velocity (Le terminal velocity in

an electrical field) of 0.4 ft/s, calculate the efficiency (in fractions, i.e., 0-1) if one duct is fed 40% of the gas and the other two 30% each. The total volume flow rate to be treated is 4000 acfm. Note: In each duct, both inner sides of the plates should be counted for the collection area. Add your answer Integer, decimal, or E notation allowed 199 30 % 20 Points 10 ft