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Q#1
GATE CH 2020
NAT
+2 marks
-0 marks
An aqueous suspension at 600C is fed to the first effect of a double effect forward feed evaporator with a mass flow rate of 1.25 kgs−1. The sum of the rates of water evaporated from the first and second effects is 1.0 kgs−1. Temperatures of the exit streams from the first and the second effects are1000C and 60 0C, respectively. Consider the specific heat of the aqueous suspension, and the latent heat of phase change for water to be 4 kJ kg−1 K−1 and 2200 kJ kg−1, respectively, over this temperature range. The steam economy (in kg per kg) is____(round off to 2 decimal places).
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Browse Practice Questions by Chapters / Topics in Browse Practice Questions by Chapters / Topics in GATE Chemical Engineering
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| Topic | Questions | Attempted | Correct | |
|---|---|---|---|---|
| Heat Transfer | 26 | 0 | 0 | |
| Chemical Technology | 17 | 0 | 0 | |
| Mechanical Operations | 12 | 0 | 0 | |
| Mass Transfer | 42 | 0 | 0 | |
| Instrumentation and Process Control | 26 | 0 | 0 | |
| Fluid Mechanics | 24 | 0 | 0 | |
| Engineering Mathematics | 41 | 0 | 0 | |
| General Aptitude | 60 | 0 | 0 | |
| Chemical Reaction Engineering | 26 | 0 | 0 | |
| Process Calculation | 9 | 0 | 0 | |
| Plant Design Economics | 10 | 0 | 0 | |
| Thermodynamics | 24 | 0 | 0 |
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