Natural draft is produced in a boiler furnace when:
a. Hot flue gases contract so that each cubic meter has more mass
b. Gases in the stack have less mass than an equal column of outside air
c. Gases in the stack have more mass than an equal column of outside air
d. Hot flue gases condense
e. The dampers are fully closed
Answer: A
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Power Engineering Chapter 56
- A boiler with only an induced draft fan:
- Boiler chimneys are commonly lined with:
- A characteristic of mechanical draft is that the draft:
- Boiler combustion is regulated by:
- Induced draft may be accomplished by a:
- When an air heater is used in a boiler:
- The inclined tube manometer:
- In a forced draft system, the furnace pressure is:
- An induced draft fan:
- A diaphragm type pressure gauge:
- When draft is produced by natural means:
- With an axial flow fan, the air flow:
- A more durable chimney for a power plant application is the _____ chimney.
- In a balanced draft system, the air heater is located:
- Primary air:
- Inlet damper control on a fan:
- The most efficient operation of a fan demands that:
- With fan output damper control:
- Which code specifies standards for the air openings required into a boiler room when the boiler is burning gas?
- Which code specifies standards for the air openings required into a boiler room when the boiler is burning oil?
- A diaphragm draft gauge indicates pressure in?
- The inclined tube manometer advantages over the U tube manometer is?
- In a balanced draft system, the control for the induced draft fan is?
- The combustion control system dictates the amount of steam being produced by sensing?