As shown in the illustration, the function of component "1" is to ________. MO-0128

Correct Answer: Option B — evaporate circulating boiler water into saturated steam

Evaporating circulating boiler water into saturated steam is the primary function of the generating tubes represented by component 1 in marine auxiliary boilers. Heat transferred from combustion gases changes phase from high-temperature liquid to saturated steam inside the drum circuit.