) A bioreactor which is used for the production of penicillin antibiotic is operated in Tekirda in

June, 2017. Diameter of the bioreactor is 2.2 m. The bioreactor is operated in the presence of four

baffles and width of the baffle is 0.18 m. The impeller is operated at 120 r/min. The diameter of

impeller is 0.9 m and the height of the blades is 0.18 m. The bioreactor is operating at 80% full

volume. The density and the kinematic viscosity of the culture medium is 998.2 kg/m3 and 1.007

x 10-6 m2

/s and they do not change through culture period. The process is a batch process and takes

5 days before stopping the bioreactor.

a) Calculate power consumption.

b) The power consumption by motor of impeller is 40% of the total power consumption of

the bioreactor system from t=0. What will you pay for the electricity?