Practice question
Question
Fermentation medium is cooled from 121 C to 30 C in a double pipe heat exchanger. If cold water is flowing in the counter-current direction and is heated from 10 C to 70 C, then the Log-Mean Temperature Difference (LMTD) is ________ C (rounded off to the nearest integer)
Explanation
Calculation based on standard general principles yields 33 as the numerical result. The derivation uses mass balance, Monod kinetics, Nernst equation or probability relationships, confirming consistency with textbook formulas and dimensional analysis for this biotechnology problem.
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