Heat-transfer area of a cooling crystallizer. Feed to a cooling crystallizer is 2,000 kg/h of 30 wt% Na2SO4 in water at 40°C. This solution is to be cooled to a temperature at 17.22. which 50% of the solute crystallizes as decahydrate. Estimate the 2 required heat-transfer area in m² if an overall heat-transfer coefficient of 15 Btu/h-ft²-°F can be achieved. Assume a constant specific heat for the solution of 0.80 cal/g-°C. Cooling water at 10°C flows countercurrently to the solution, and exits at a tempera- ture that gives a log mean driving force of at least 10°C.
Heat-transfer area of a cooling crystallizer. Feed to a cooling crystallizer is 2,000 kg/h of 30 wt% Na2SO4 in water at 40°C. This solution is to be cooled to a temperature at 17.22. which 50% of the solute crystallizes as decahydrate. Estimate the 2 required heat-transfer area in m² if an overall heat-transfer coefficient of 15 Btu/h-ft²-°F can be achieved. Assume a constant specific heat for the solution of 0.80 cal/g-°C. Cooling water at 10°C flows countercurrently to the solution, and exits at a tempera- ture that gives a log mean driving force of at least 10°C.
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
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:Heat-transfer area of a cooling crystallizer.
Feed to a cooling crystallizer is 2,000 kg/h of 30 wt% Na,SO4 in
water at 40°C. This solution is to be cooled to a temperature at
17.22.
which 50% of the solute crystallizes as decahydrate. Estimate the
required heat-transfer area in m² if an overall heat-transfer
coefficient of 15 Btu/h-ft2-°F can be achieved. Assume a constant
specific heat for the solution of 0.80 cal/g-°C. Cooling water at
10°C flows countercurrently to the solution, and exits at a tempera-
ture that gives a log mean driving force of at least 10°C.
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