Which of the listed conditions can cause...

Question 1 / 270705eccefa0bacbc34ba4d46e25

Question 1 of 270705eccefa0bacbc34ba4d46e25

Which of the listed conditions can cause excessively high superheater outlet steam temperature in an automated boiler?

Question 1 of 27070

Which of the listed conditions can cause excessively high superheater outlet steam temperature in an automated boiler?

🔍 Key Concepts

• Superheater function – what it does to steam after it leaves the drum • Effect of furnace heat/air flow on gas temperature at the superheater • Relationship between desuperheating and steam temperature control

💭 Think About

• Ask yourself: Which option would tend to make the gas temperature around the superheater tubes hotter, not cooler? • Which options would actually work against a high outlet temperature by either adding water or removing heat? • How does too little air versus too much air affect combustion temperature and thus the temperature of gases hitting the superheater?

✅ Before You Answer

• Identify which choices would add water to the steam and therefore tend to reduce temperature. • Identify which choices would increase furnace gas temperature reaching the superheater. • Consider which device – superheater vs. desuperheater – is intended to raise vs. lower steam temperature.

Question 1 of 27070

Which of the listed conditions can cause excessively high superheater outlet steam temperature in an automated boiler?

High water level in the steam drum.

Excessive heat transfer in the control desuperheater.

Insufficient excess air.

Excessive air flow through the furnace

Question 1 / 270705eccefa0bacbc34ba4d46e25

Question 1 of 270705eccefa0bacbc34ba4d46e25

Which of the listed conditions can cause excessively high superheater outlet steam temperature in an automated boiler?

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Question 1 of 27070

Which of the listed conditions can cause excessively high superheater outlet steam temperature in an automated boiler?