A four-effect evaporator is being considered for concentrating fruit juice that has no appreciable boiling-point elevation. Steam is available at 143.27 kPa and the boiling point of the product in the fourth effect is 45°C. The overall heat transfer coefficients are 3000W/m2°C in the first effect, 2500W/m2°C in the second effect, 2100W/m2°C in the third effect, and 1800W/m2°C in the fourth effect. Calculate the boiling-point temperature of the product in the first, second and third effects. Assume the heating areas in all the effect are equal to 50m2 each. The mass flow rate of steam to the first
A four-effect evaporator is being considered for concentrating fruit juice that has no appreciable boiling-point elevation. Steam is available at 143.27 kPa and the boiling point of the product in the fourth effect is 45°C. The overall heat transfer coefficients are 3000W/m2°C in the first effect, 2500W/m2°C in the second effect, 2100W/m2°C in the third effect, and 1800W/m2°C in the fourth effect. Calculate the boiling-point temperature of the product in the first, second and third effects. Assume the heating areas in all the effect are equal to 50m2 each. The mass flow rate of steam to the first
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A four-effect evaporator is being considered for concentrating fruit juice that has no appreciable boiling-point elevation. Steam is available at 143.27 kPa and the boiling point of the product in the fourth effect is 45°C. The overall heat transfer coefficients are 3000W/m2°C in the first effect, 2500W/m2°C in the second effect, 2100W/m2°C in the third effect, and 1800W/m2°C in the fourth effect. Calculate the boiling-point temperature of the product in the first, second and third effects. Assume the heating areas in all the effect are equal to 50m2 each. The mass flow rate of steam to the first effect is 2400 kg/h. The feed rate to the first effect of 5% total solids fluid is 15,000kg/h, the concentrated product from the first effect leave at 6.25% total solids, and the concentration of product leaving of the second effect is 8.82% total solids.
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