Which of the conditions listed could cause...

Question 1 / 270705eccefa0bacbc34ba4d46ed9

Question 1 of 270705eccefa0bacbc34ba4d46ed9

Which of the conditions listed could cause steam formation in the economizer?

Question 1 of 27070

Which of the conditions listed could cause steam formation in the economizer?

🔍 Key Concepts

• Function and purpose of an economizer in a boiler system • Relationship between gas temperature, water flow rate, and heat transfer in the economizer • What conditions tend to push feedwater toward its saturation temperature inside the economizer

💭 Think About

• For each choice, ask: does this condition increase or decrease the rate of heat transfer from the gas to the feedwater? • Consider whether more or less water flow through the economizer makes it easier for the water to reach boiling conditions in the tubes. • Think about what happens to the economizer metal and gas temperature when the boiler firing rate changes very quickly.

✅ Before You Answer

• Identify which option would most likely cause the feedwater outlet temperature to approach or exceed its saturation temperature at that pressure. • Eliminate any choices that mainly reduce heat transfer, making boiling in the economizer less likely. • Check which condition would cause a rapid rise in exhaust gas temperature passing over the economizer tubes.

Question 1 of 27070

Which of the conditions listed could cause steam formation in the economizer?

Soot buildup on the gill rings

An open main feed pump recirculating line

Excessive water flow rates

Sudden large increase in the firing rate

Question 1 / 270705eccefa0bacbc34ba4d46ed9

Question 1 of 270705eccefa0bacbc34ba4d46ed9

Which of the conditions listed could cause steam formation in the economizer?

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Question 1 of 27070

Which of the conditions listed could cause steam formation in the economizer?