The rate of heat transfer in a water-tube...

Question 1 / 205eccefa2bacbc34ba4d47bc0

Question 1 of 205eccefa2bacbc34ba4d47bc0

The rate of heat transfer in a water-tube auxiliary boiler can be increased by __________.

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Question 1 of 20

5eccefa2bacbc34ba4d47bc0

The rate of heat transfer in a water-tube auxiliary boiler can be increased by __________.

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🔍 Key Concepts

• heat transfer surfaces in water-tube boilers (water inside the tubes, hot gases outside) • effects of surface area and cleanliness on conduction and convection • difference between combustion efficiency changes and heat transfer rate at the tube surface

💭 Think About

• Which options actually change the effective heat transfer surface area between hot gas and water in a water-tube boiler? • Which options mostly affect water chemistry or combustion air without directly increasing the tube’s ability to pick up heat? • Would lowering the water level expose more tube metal to gas, or reduce the area in contact with water that can absorb heat safely?

✅ Before You Answer

• Identify which choice directly increases fireside heat transfer surface area on the tubes themselves. • Eliminate any answer that mainly addresses water treatment or corrosion/oxygen control rather than heat transfer. • Consider which choice, if done excessively, would actually reduce boiler efficiency by carrying more heat up the stack instead of into the water.

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Question 1 of 20

The rate of heat transfer in a water-tube auxiliary boiler can be increased by __________.

operating the boiler at less than normal water level

installing fins on the firesides of water-tubes

increasing the amount of excess air to the burners

treating the boiler water with chemical oxygen scavengers

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Question 1 / 205eccefa2bacbc34ba4d47bc0

Question 1 of 205eccefa2bacbc34ba4d47bc0

The rate of heat transfer in a water-tube auxiliary boiler can be increased by __________.

Back

Question 1 of 20

5eccefa2bacbc34ba4d47bc0

The rate of heat transfer in a water-tube auxiliary boiler can be increased by __________.

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