Economy of an evaporator is influenced by the_____________________?
Correct answer: D. Both B. & C.
- A. Steam pressure
- B. Feed temperature
- C. Number of effect
- D. Both B. & C.
Explanation
Evaporator economy is strongly improved by using multiple effects and by feeding the solution hot, because less live steam is required per unit of evaporation. Steam pressure mainly affects capacity and temperature driving force, so the standard answer is b and c.
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