Fruit juice at 30 °C containing total solids 5% concentrated through evaporator, single effect. Evaporator operated in vacuum at the temperature of evaporation at 80 °C, and steam with a quality of 90% is supplied in 169.06 kPa. Concentration desired of the final product is 40% solids total. Rate product concentrated out of the evaporator is 3000 kg/h. The hot kind of juice the fruit is 4.05 kJ/(kg °C), and product concentrated 3.175 kJ/(kg °C). Count a. The rate of steam required is at = kg/h. b. The economic steam (Steam economy) if the temperature of the condensate released at 90 °C. = kg water evaporated/kg steam

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Fruit juice at 30 °C containing total solids 5% concentrated through evaporator, single effect. Evaporator operated in vacuum at the temperature of evaporation at 80 °C, and steam with a quality of 90% is supplied in 169.06 kPa. Concentration desired of the final product is 40% solids total. Rate product concentrated out of the evaporator is 3000 kg/h. The hot kind of juice the fruit is 4.05 kJ/(kg °C), and product concentrated 3.175 kJ/(kg °C). Count a. The rate of steam required is at = kg/h. b. The economic steam (Steam economy) if the temperature of the condensate released at 90 °C. = kg water evaporated/kg steam
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