Question 114Steam Plants - Assistant Engineer

The correct answer is C) flow rate of fuel oil through the heater. The rate of fouling on the oil side of a fuel oil heater is inversely related to the flow rate of fuel oil through the heater. This means that as the flow rate of fuel oil increases, the rate of fouling decreases. This is because a higher flow rate helps to keep the heating surfaces clean, preventing the buildup of deposits that can reduce the efficiency of the heater. The other options are incorrect because they are not directly related to the rate of fouling on the oil side of the fuel oil heater. The pressure on the oil, the shape of the heating coils, and the quality of steam flow are not the primary factors that determine the rate of fouling in this case.