A bioreactor is scaled up based on equal impeller tip speed. Consider the following parameters for small and large bioreactors: Parameters Small bioreactor Large bioreactor Impeller speed N1 N2 Diameter of impeller D1 D2 Power consumption P1 P2 Assuming geometrical similarity and the bioreactors are operated in turbulent regime, what will be P_2P_1 ?

This question belongs to Biotechnology Engineering Bioprocess Engineering And Process Biotechnology

Bioprocess Engineering and Process Biotechnology

A bioreactor is scaled up based on equal impeller tip speed. Consider the following parameters for small and large bioreactors:

Parameters Small bioreactor Large bioreactor

Impeller speed N₁ N₂

Diameter of impeller D₁ D₂

Power consumption P₁ P₂

Assuming geometrical similarity and the bioreactors are operated in turbulent regime, what will be $$\frac{{{P_2}}}{{{P_1}}}$$ ?

A) $${\left( {\frac{{{D_1}}}{{{D_2}}}} \right)^2}$$ B) $${\left( {\frac{{{D_2}}}{{{D_1}}}} \right)^2}$$ C) $${\left( {\frac{{{D_1}}}{{{D_2}}}} \right)^5}$$ D) $${\left( {\frac{{{D_2}}}{{{D_1}}}} \right)^5}$$

Answer & Solution

Correct Answer: Option A

Let's discuss the solution. Join the discussion

Question posted by Examveda

Community

Join the Discussion

Join the discussion

No comments yet Be the first to discuss this question.

Keep Learning

Group I (Probe)	Group II (Response)
P. Thermistor	1. Activation of acid/alkali pump
Q. Oxygen electrode	2. Activation of vegetable oil pump
R. Metal rod	3. Activation of hot/cold water pump
S. pH electrode	4. Increase/decrease in stirrer motor speed

Parameters	Small bioreactor	Large bioreactor
Impeller speed	N₁	N₂
Diameter of impeller	D₁	D₂
Power consumption	P₁	P₂

A bioreactor is scaled up based on equal impeller tip speed...

Join the Discussion

Related Questions on Bioprocess Engineering and Process Biotechnology