A fruit juices at 30°C with 5% total solids is being concentrated in a single-effect evaporator. The evaporator is being operated at a sufficient vacuum to allow the product moisture to evaporate at 80°C, and steam with 85% quality is being supplied at 169.06 kPa. The desired concentration of the final product is 40% total solids. The concentrated product exits the evaporator at a rate of 2500 kg/h. The specific heat of liquid feed is 4.05 kJ/(kg°C), and of concentrated product is 3.175 kJ/(kg°C). Calculate the: a. Steam requirements is = Answer kg / hour. b. Steam economy for the process, when condensate is released at 90°C. = Answer (kg of water evaporates / kg of steam)
A fruit juices at 30°C with 5% total solids is being concentrated in a single-effect evaporator. The evaporator is being operated at a sufficient vacuum to allow the product moisture to evaporate at 80°C, and steam with 85% quality is being supplied at 169.06 kPa. The desired concentration of the final product is 40% total solids. The concentrated product exits the evaporator at a rate of 2500 kg/h. The specific heat of liquid feed is 4.05 kJ/(kg°C), and of concentrated product is 3.175 kJ/(kg°C). Calculate the: a. Steam requirements is = Answer kg / hour. b. Steam economy for the process, when condensate is released at 90°C. = Answer (kg of water evaporates / kg of steam)
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 fruit juices at 30°C with 5% total solids is being concentrated in a single-effect evaporator. The evaporator is being operated at a sufficient vacuum to allow the product moisture to evaporate at 80°C, and steam with 85% quality is being supplied at 169.06 kPa. The desired concentration of the final product is 40% total solids. The concentrated product exits the evaporator at a rate of 2500 kg/h. The specific heat of liquid feed is 4.05 kJ/(kg°C), and of concentrated product is 3.175 kJ/(kg°C). Calculate the:
a. Steam requirements is = Answer kg / hour.
b. Steam economy for the process, when condensate is released at 90°C. = Answer (kg of water evaporates / kg of steam)
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