1000 Kg of liquid at 30C in a well stirred vessel has to be heated to 120C, using immersed coils carrying condensing steam at 150C. The area of the steam coils is 1.2 m2 and the overall heat transfer co-efficient to the liquid is 1500 W/m2.C. Assuming negligible heat loss to the surrounding and specific heat capacity of the liquid to be 4 kJ/kg.C, the time taken for the liquid to reach desired temperature will be__________________?

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