If the flue gas oxygen content is too high,...

Question 1 / 270705eccefa0bacbc34ba4d46ea9

Question 1 of 270705eccefa0bacbc34ba4d46ea9

If the flue gas oxygen content is too high, you should __________.

Question 1 of 27070

If the flue gas oxygen content is too high, you should __________.

🔍 Key Concepts

• Combustion efficiency in marine boilers and diesel engines • Effect of excess air on flue gas oxygen readings • What the forced draft fan and combustion control system actually regulate

💭 Think About

• Which system or adjustment directly changes the amount of air supplied to the burner for a given fuel setting? • If flue gas oxygen is high, does that mean too much air or too little air, and what is normally adjusted to correct that? • Which choice would most logically affect the air‑to‑fuel ratio without creating unrelated problems?

✅ Before You Answer

• Verify what a high O₂ percentage in flue gas physically indicates about air‑to‑fuel ratio • Check which component is designed to maintain proper combustion conditions (not just fuel quality or temperature) • Confirm which change would reduce excess air rather than increase it further

Question 1 of 27070

If the flue gas oxygen content is too high, you should __________.

adjust the combustion control system

adjust the fuel oil service system

increase the fuel oil temperature

increase the forced draft fan speed