Name of the College : Sphoorthy Engineering College
University : JNTUH
Department : AUTOMIBILE ENGINEERING
Subject Code/Name : 09A52301 /TRANSPORT PHENOMENA IN BIOPROCESSES
Year : December 2011
Degree : B.Tech
Year/Sem : III/I
Website : sphoorthyengg.com
Document Type : Model Question Paper
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/sphoorthyengg.com/4796-09A52301%20-%20TRANSPORT%20PHENOMENA%20IN%20BIOPROCESSES.pdf
Transport Phenomena In Bioprocesses :
B. Tech III Year I Semester Examinations, December-2011
Time: 3 hours
Max. Marks: 75
Related : Sphoorthy Engineering College 09A52401 Mechanics of Fluids & Hydraulic Machines B.Tech Question Paper : www.pdfquestion.in/4786.html
Answer any five questions :
All questions carry equal marks :
1.a) What is meant by the term “Non-Newtonian”? What types of substance exhibit this behaviour?
b) Describe about the “cone-and-plate viscometer”. [7+8]
2.a) Discuss about the equation of motion.
b) Define the terms ‘friction factor’ and ‘drag coefficient’. [9+6]
3.a) Compare Fourier’s law of heat conduction with Newton’s law of viscosity?
b) Discuss the effect of T and P on thermal conductivity of gasses and liquids. [7+8]
4. Derive the temperature distribution in a semi-infinite slab. [15]
5. Write short notes on the following:
a) Boundary layer theory b) Film theory c) Role of diffusion in bioprocessing [15]
6. Estimate the rate of absorption of CO2 into a water film flowing down a vertical wall 1m long at the rate of 0.05 kg/s per meter of width at 250C. The gas is pure CO2 at 1 std atm.
The water is essentially CO2-free initially. The solubility of CO2 in water at 250C, 1 std atm, is CAi = 0.0336 kmol/m3, µ = 8.9 x 10-4 kg/ms, DAB = 1.96 x 10-9 m2/s, solution density = 998 kg/ m3, G = 0.05 kg/ms, L = 1m. [15]
7.a) Write some applications of mass transfer in bioprocessing.
b) Explain the process of mass transfer by convection. [8+7]
8. Discuss the following
a) Oxygen uptake in cell cultures b) antifoam agents [8+7]
R09Code No: 09A52301
SET-2
1.a) What is Newton’s law of viscosity? Explain
b) How does the viscosity vary with T and P for dilute gases and liquids? [6+9]
2. Derive the equations for friction factor in packed columns? [15]
3.a) Describe the analogy between heat and momentum transfer?
b) Compare the temperature dependence of thermal conductivity for gases, liquids and solid. [7+8]
4. Derive the temperature distribution in a semi- infinite and finite slab. [15]
5.a) Compare Fick’s law of diffusion with Newton’s law of viscosity and Fourier’s thermal conductivity. To what extent are these three relations analogous?
b) Discuss the role of diffusion in bioprocessing. [8+7]
6. Describe about boundary layer theory and penetration theory. [15]
7.a) Explain the process of mass transfer by convection.
b) Write short notes on liquid- solid mass transfer. [7+8]
8. Describe about the following.
a) Oxygen balance method
b) Oxygen transfer in fermentor [7+8]
R09Code No: 09A52301
SET-3
1.a) How do you measure the viscosity using coaxial cylinder rotary viscometer.
b) Discuss about the rheological properties of fermentation broth. [7+8]
2. Derive the equations for friction factor when the fluid is flowing in tubes. [15]
3. A plastic panel of area A=900 cm2 and thickness Y=0.6cm was found to conduct heat at a rate of 3.5 watts at steady state with temperatures of T0 =250C and T1=250C on the two main surfaces. What is the thermal conductivity of the plastic in cal/m sec K? [15]
4. Derive the temperature distribution in a Stirred Tank Reactor when the flow is turbulent. [15]
5.a) Discuss about boundary layer theory and film theory
b) What does the Corrsin equation describe? [8+7]
6.a) Define mass transfer coefficient and derive the equations to calculate mass transfer coefficient
b) Discuss about penetration theory. [7+8]
7.a) What are the various correlations for evaluating mass transfer coefficient?
b) Write short notes on liquid- liquid mass transfer? [7+8]
8.a) What are the factors affecting cellular oxygen demand ? Explain
b) Discuss about oxygen uptake in cell cultures. [8+7]
B. Tech III Year I Semester Examinations, December-2011 Set IV :
1.a) Discuss about impeller viscometer.
b) What is meant by the term “Non-Newtonian”? What types of substance exhibit this behavior? [8+7]
2.a) Give the physical significance of the three derivatives in which T is the local fluid temperature.
b) What is continuity equation? Explain. [10+5]
3. A plastic panel of area A=929 cm2 and thickness Y=0.64 cm was found to conduct heat at a rate of 3 watts at steady state with temperatures of T0 =240C and T1 =260C on the two main surfaces. What is the thermal conductivity of the plastic in cal/m sec K? [15]
4. Derive the temperature distribution for a Stirred Tank Reactor and discuss the relationship between cell concentrations & stirred conditions. [15]
5.a) What is diffusion? What factors may cause diffusion to occur?
b) Discuss the analogy between mass, heat and momentum transfer. [7+8]