A solution of organic solids is to be concentrated from 20 to 65% wt. solids in a vertical-tube evaporator. The solution has a negligible elevation in boiling point and the specific heat of the feed is 0.93 Btu/lbm-0F. Saturated steam is available at 0.7 atm abs., and the pressure in the condenser is 100 mmHg abs. The feed enters at 60°F. The overall coefficient is 1700 W/m2 -°C. The evaporator must evaporate 20,000 kg of water per hour. How many square meters of surface area are required and what is the steam consumption in kg/h?
A solution of organic solids is to be concentrated from 20 to 65% wt. solids in a vertical-tube evaporator. The solution has a negligible elevation in boiling point and the specific heat of the feed is 0.93 Btu/lbm-0F. Saturated steam is available at 0.7 atm abs., and the pressure in the condenser is 100 mmHg abs. The feed enters at 60°F. The overall coefficient is 1700 W/m2 -°C. The evaporator must evaporate 20,000 kg of water per hour. How many square meters of surface area are required and what is the steam consumption in kg/h?
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 solution of organic solids is to be concentrated from 20 to 65% wt. solids in a vertical-tube evaporator. The solution has a negligible elevation in boiling point and the specific heat of the feed is 0.93 Btu/lbm-0F. Saturated steam is available at 0.7 atm abs., and the pressure in the condenser is 100 mmHg abs. The feed enters at
60°F. The overall coefficient is 1700 W/m2 -°C. The evaporator must evaporate 20,000 kg of water per hour. How many square meters of surface area are required and what is the steam consumption in kg/h?
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