March 2003
Intermediate to advanced
1056 pages
32h 58m
English
book
Transport Processes and Separation Process Principles (Includes Unit Operations) Fourth Edition
by Christie John Geankoplis
Content preview from Transport Processes and Separation Process Principles (Includes Unit Operations) Fourth Edition
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PROBLEMS
| 8.4-1. |
Heat-Transfer Coefficient in Single-Effect Evaporator. A feed of 4535 kg/h of a 2.0 wt % salt solution at 311 K enters continuously a single-effect evaporator and is being concentrated to 3.0%. The evaporation is at atmospheric pressure and the area of the evaporator is 69.7 m2. Saturated steam at 383.2 K is supplied for heating. Since the solution is dilute, it can be assumed to have the same boiling point as water. The heat capacity of the feed can be taken as cp = 4.10 kJ/kg · K. Calculate the amounts of vapor and liquid product and the overall heat-transfer coefficient U. |
| A1: | Ans. U = 1823 W/m2 · K |
| 8.4-2. |
Effects of Increased Feed Rate in Evaporator. Using the same area, value of U, steam pressure, evaporator pressure, and ... |
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