Using graphs for rate-based design: Question One (MSH Q18.7, 7th ed) (30 points): An 8 ft diameter column packed with 20 ft of 1 Berl saddles has air at 1.5 atm and 40oC flowing through it. The tower is apparently close to flooding, since P = 24 inches of water. The mass velocity of the liquid is 8.5 times that of the gas, and has a density of 50 lb/ft3. a) If the tower were repacked with 1.5 inch Intalox saddles, what would the pressure drop be? {Ans: 6.6 in H2O} b) How much higher gas flow rates could be used if the pressure drop were the same as it was with the Berl saddles? {Ans: 1.45 times} Hint: Use Figure 18.6 for this question, and adjust between Berl and Intalox saddles