This preview shows page 1. Sign up to view the full content.
Unformatted text preview: Uses waste heat from the combustion air to heat boiler feedwater 4. Is air pressure above or below atmospheric in most utility boilers? How is this controlled? Air pressure is slightly above atmospheric and is controlled by using both forced draft and induced draft fans 5. What are the limitations about how low stack temperatures can go? Plume dispersal and condensation of combustion byproducts 6. What is an attemperator? A device that sprays water into superheated steam to control steam temperature...
View Full Document
- Fall '10