Question

Steam with 90% strength and pressure of 1.43 bars is condensing in the annular space of a T.C. double type 5 m long tube. Liquid food (cp = 3.9 kJ/kgC) flows at a rate of 0.5 kg/s in the inner tube (5 cm diameter) with an inlet temperature of 40C and an outlet temperature of 80C. Therefore: a) calculation of the coefficient global T.C.; b) if the conductive heat transfer resistance is negligible and the T.C. coefficient is negligible. convective on the significantly high steam side, estimate the T.C. coefficient. convective for liquid food.

          Steam with 90% strength and pressure of 1.43 bars is condensing in the annular space of a T.C. double type
5 m long tube. Liquid food (cp = 3.9 kJ/kgC) flows at a rate of 0.5 kg/s in the inner tube
(5 cm diameter) with an inlet temperature of 40C and an outlet temperature of 80C. Therefore: a) calculation of the coefficient
global T.C.; b) if the conductive heat transfer resistance is negligible and the T.C. coefficient is negligible. convective
on the significantly high steam side, estimate the T.C. coefficient. convective for liquid food.

Added by Virginia S.

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