Power Generation Flashcards
What are the issues with using untreated water in the boiler?
Corrosion and scaling start to take place
Why is important to use dry steam in a plant?
To prevent equipment damage
What are a few examples of incomplete combustion product?
Wasted product
Pollution
Explosive environment
How is complete combustion in a boiler achieved? What is the drawback?
Complete combustion is achieved using excess air however adds extra heat to the flue gas
What are the 3 T’s needed for successful combustion?
Temperature: temperature high enough for combustion to occur
Turbulence: the air and fuel mix to achieve proper air: fuel ratio
Time: materials are given time to mix and combust
A forced draft fan ____________ the boiler.
Pushes air to
Induced draft fan _________________ the boiler.
Pulls air from
Heat travels from _____ to _________ regions
hot, colder
What equipment is used to prevent corrosion in a boiler?
Deaerator
What equipment prevents scale build up in a boiler?
Water softener
What happens when steam demand is higher than steam supply?
The pressure drops
What system variable indicates if steam production is matching the demand in boliers?
The steam header pressure
