Engineering · Auxiliary — Distillers
A marine evaporator (distilling plant) produces fresh water from seawater by:
- AReverse osmosis through a membrane only
- BBoiling seawater under vacuum at reduced temperature and condensing the vapor✓ Correct
- CFiltering out the salt
- DFreezing the seawater
Explanation
A flash/submerged-tube evaporator boils seawater under vacuum (so it boils at a lower temperature using waste heat), then condenses the salt-free vapor into distillate.
Authority: Auxiliary Machinery (USCG engineering topic)
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