A fermentation medium is being cooled from 70 °C to 32 °C in a double pipe heat exchanger. Fluid flowing counter currently with this stream is…
A fermentation medium is being cooled from 70 °C to 32 °C in a double pipe heat exchanger. Fluid flowing counter currently with this stream is heated from 20 °C to 46 °C. The log mean temperature difference (in °C) for the two streams is
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Correct Answer: Option A
Explanation
Counter-current heat exchanger LMTD calculation: Hot fluid (fermentation medium): inlet, outlet. Cold fluid (counter-current): inlet(enters at the hot-fluid outlet end), outlet. Temperature differences at each end:;..