Q. What is the steam pressure limit of natural circulation boilers?

  • (A) 650bar
  • (B) 180bar
  • (C) 400bar
  • (D) 550bar
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✅ Correct Answer: (B) 180bar
Explanation: water is purely circulated by density difference with most of the heat from the fuel flame being radiated to the water walls directly. the steam pressure of such boilers is limited to about 180bar, with water and steam being separated in the boiler drum.

Published by Mr. Dubey ⭐ 109.99K Points at 23-Sep-2023 07:25 pm in Power Plant Engineering (PPE)

Explanation by: Mr. Dubey
water is purely circulated by density difference with most of the heat from the fuel flame being radiated to the water walls directly. the steam pressure of such boilers is limited to about 180bar, with water and steam being separated in the boiler drum.

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