Question 61

BTNAT2 marksNeeds review
A hot, freshly-sterilised fermentation medium is cooled in a double-pipe heat-exchanger. The medium enters the inner pipe of the exchanger at 95 °C and leaves the exchanger at 40 °C. Cooling water, flowing counter-currently to the medium, enters the annulus of the exchanger at 15 °C and leaves the exchanger at 45 °C. The overall heat transfer coefficient is 1350 W m

°C

. The rate of heat transfer per unit area will be ______ W/m².
(Round off to the nearest integer)

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2025BT

GATE BT 2025 · Paper 1

Biotechnology · Original paper archive

Section
Biotechnology
Question type
Numerical answer (NAT)
Marks
2 marks

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