Question: A juice processing operation uses steam to heat the fruit juice up to a temperature of 96C prior to aseptically packaging it in drink boxes.

A juice processing operation uses steam to heat the fruit juice up to a temperature of 96C prior to aseptically packaging it in drink boxes. They need to heat 1,875 kg of pineapple juice (12.8% solids) from an initial storage temperature of 39F to its heat treatment temperature. How much saturated steam at 415.4 kPa would be needed for this task? In this case, the condensate is to be discharged from the process without any further cooling to recover any of its heat and is returned to the steam plant where it is reheated and turned back into steam.

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