Steam Plants (Boilers & Turbines) USCG Question #631 (Set 22)

The rate of fouling on the oil side of a fuel oil heater is inversely related to the __________.

Official USCG Answer & Rule Citation

Correct Answer: Option D — flow rate of fuel oil through the heater

Higher fluid velocity and flow rates through a fuel oil heater create continuous scouring action, which is inversely related to the rate of carbon and sludge fouling on the oil-side surfaces.

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