OUTPUT Ex7.6.a ========================================================== At the peak demand, fraction of the oxygen supplied = 0.592 OUTPUT Ex7.6.b ========================================================== The total power required for the agitator before the air is turned on: 316 kW The total power required for the agitator after the air is turned on: 203 kW OUTPUT Ex7.6.c ========================================================== The calculated value of kLa (mass transfer coefficient) of solution:0.22 (sec-1) The calculated value of average dissolved O2 concentration: 2.87 (mg/L) OUTPUT Ex7.6.d ========================================================== The new calculated value of average dissolved O2 concentration 1.68 (mg/L) The reactor is operated above critical O2 concentration