Boiler
A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil.
A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil.
A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil.
Source: Wikipedia "Boiler" · CC BY-SA 4.0
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