When too much excess air is supplied to an...

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Question 1 of 205eccefa0bacbc34ba4d46e76

When too much excess air is supplied to an operating boiler, the __________.

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5eccefa0bacbc34ba4d46e76

When too much excess air is supplied to an operating boiler, the __________.

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🔍 Key Concepts

• excess air in combustion and how it affects temperature and efficiency • relationship between stack gases (flue gas) and heat loss • visual changes in flame appearance when air is too high or too low

💭 Think About

• Think about what happens to flame temperature when you add more air than needed: does the flame get hotter or cooler? • If cooler combustion gases are leaving up the stack, what does that do to the boiler’s overall efficiency? • Which of the options describes a condition that would logically follow from cooler, more diluted combustion gases?

✅ Before You Answer

• Make sure you understand that excess air means more than the chemically required amount for complete combustion • Consider how too much air affects heat transfer to the water/steam vs. heat going out the stack • Eliminate any choices that mainly describe fuel-rich (not air-rich) combustion conditions, such as very sooty or smoky flames

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Question 1 of 205eccefa0bacbc34ba4d46e76

When too much excess air is supplied to an operating boiler, the __________.

Back

Question 1 of 20

5eccefa0bacbc34ba4d46e76

When too much excess air is supplied to an operating boiler, the __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed