How much heat must be put into the system to compensate

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Reference no: EM133932335

Questions

1. In a continuous bioreactor system, air sparging through the system evaporates 20 g/h of water. If the bioreactor is to maintained at 33°C, how much heat must be put into the system to compensate for this evaporative loss?

2. Steam is used to heat nutrient medium in a continuous-flow process. Saturated steam at 150°C enters a coil on the outside of the heating vessel and is completely condensed. Medium enters the vessel at 15°C and leaves at 44°C. Heat losses from the jacket to the surroundings are estimated as 0.22 kW. If the flow rate of medium is 2350 kg/h and the heat capacity is 3.8 kJ/kg/°C, how much steam is required?

3. During its exponential phase, the growth rate of a culture is proportional to the concentration of live cells present. If the concentration of cells of a bacteria doubles in 45 minutes, how many cells will be present (relative to the initial level) if this growth rate is maintained for 12 hours?

Reference no: EM133932335

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