Question

” A balloon is filled with air at a steady rate.” Which process can be correct for this condition?

(a) Semi – batch

(b) Batch

(c) Fed – batch

(d) Continuous

This question was posed to me at a job interview.

The above asked question is from Solving Unsteady topic in section Unsteady – State Material and Energy Balances of Bioprocess Engineering

Answer 1

(a) Semi – batch

In this scenario, the balloon is filled with air at a steady rate, which indicates a process where material is added continuously but the product (the air inside the balloon) is not removed until later, which is characteristic of a semi-batch process. In semi-batch processes, input is continuous, but the output is either zero or occurs at discrete intervals.