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Q. |
It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30°C. The boiling point of the solution is 110°C, the latent heat of vaporisation is 2100 kJ/kg and the specific heat of the solution is 4 kJ/kg.K. The rate at which the heat has to be supplied in (kJ/min) to the evaporator is |
A. | 3.06 × 105 |
B. | 6.12 × 105 |
C. | 7.24 × 105 |
D. | 9.08 × 105 |
Answer» A. 3.06 × 105 |
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