Expansion tanks when used in a ship's low temperature hot water heating system may be of the open or closed type. In a closed type system, what would be the normal temperature range of the water?

Correct Answer: Option B — 220°F to 240°F

Low-temperature hot water heating systems in marine applications typically operate within a specific range to balance heat transfer efficiency and safety. Closed-type systems, which utilize an expansion tank to accommodate fluid volume changes, generally maintain water temperatures between 220°F and 240°F to prevent boiling while ensuring effective heating.