The efficiency of a flash type evaporator can be increased by __________.
Official USCG Answer & Rule Citation
Correct Answer: Option B — decreasing the absolute pressure of each stage
Flash evaporators operate by injecting heated seawater into a chamber maintained at a lower pressure. Decreasing the absolute pressure of each stage increases the pressure differential, promoting more rapid flashing of the feed water into vapor, thereby enhancing the overall production efficiency of the distillation unit.
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