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TLS Online TPP Program
#Question id: 15646
#SCPH05 I Biotechnology
The quantity of heat required to evaporate 1 kg of a saturated liquid is called
TLS Online TPP Program
#Question id: 15647
#SCPH05 I Biotechnology
A liquid stream is cooled from 80°C to 30°C in a double pipe heat exchanger as illustrated below:
Fluid flowing counter currently with this stream is heated from 15°C to 30°C. Calculate the log mean temperature difference.
TLS Online TPP Program
#Question id: 15648
#SCPH05 I Biotechnology
The main function of baffles in a bioreactor are
P. to prevent a vortex
Q. to increase aeration
R. to reduce interfacial area of oxygen transfer
S. to reduce aeration rate
TLS Online TPP Program
#Question id: 15649
#SCPH05 I Biotechnology
A bacterial culture having a specific oxygen uptake rate of 5 mmol O2 (g DCW)−1 h−1 is being grown aerobically in a fed-batch reactor. The maximum value of the volumetric oxygen transfer coefficient is 0.18 s−1 for the stirred tank bioreactor and the critical dissolved oxygen concentration is 20% of the saturation concentration (8 mg L−1). The maximum density to which the cells can be grown in the fed-batch process, without the growth being limited by oxygen transfer, is approximately
TLS Online TPP Program
#Question id: 15650
#SCPH05 I Biotechnology
For scaling up of a bioreactor, the following parameter is assumed to be constant
TLS Online TPP Program
#Question id: 15651
#SCPH05 I Biotechnology
Power number, also called Newton’s number, is defined as a dimensionless parameter relating to: