Fermentation is carried out with a bacterium in a stirred tank type reactor, with agitation at 90 rpm, and aerated at 0.4 vvm. The diameter of the tank is 4m and it has two flat blade type impellers with four blades. The ratio is 1.625 and is 05; while the density and viscosity of the medium were 1200 kg/m^3 and 0.02 N s/m^2, respectively.

Determine:

a) Power

b) Gassed power

c)

D:H D:D 7y La 102 HI Propeller,square pitch, three blades Flat paddle, two blades Turbine, four flat blades, vaned disk 101 Power number, Pno 100 10-1 100 101 102 105 106 107 103 104 Reynolds number, Re 1.0 0.8 0.6 Power requirement ratio, Pa/P 0.4 Flat blade turbine Vaned disc (eight vanes) Vaned disc (six vanes) 0.2 0.0 0.000 0.016 0.012 0.002 0.004 0.006 0.008 Aeration number, dimensionless D:H D:D 7y La 102 HI Propeller,square pitch, three blades Flat paddle, two blades Turbine, four flat blades, vaned disk 101 Power number, Pno 100 10-1 100 101 102 105 106 107 103 104 Reynolds number, Re 1.0 0.8 0.6 Power requirement ratio, Pa/P 0.4 Flat blade turbine Vaned disc (eight vanes) Vaned disc (six vanes) 0.2 0.0 0.000 0.016 0.012 0.002 0.004 0.006 0.008 Aeration number, dimensionless