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5 Fuel System > Key Points > Flashcards

Key Points Flashcards

1
Q

Fuel system accessories are used to store, supply and control the fuel supplied to the boiler

A

True

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2
Q

Fuel oil is a liquid fossil fuel that consists primarily of carbon hydrogen and moisture

A

True

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3
Q

Fuel oils used in low pressure boilers are no. 2 fuel oil no. 4 fuel oil, no. 5 fuel oil and no. 6 fuel oil.

A

True

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4
Q

Fuel oil burners atomize fuel oil to increase contact with combustion air for maximum combustion efficiency

A

True

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5
Q

Natural gas is a colorless and odorless fossil fuel that consist primarily of methane, small amounts of ethylene, and other gases

A

True

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6
Q

In a low pressure gas system, gas is reduced from supplier gas pressure to approximately 0 psi

A

True

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7
Q

In a high pressure fas system, gas is supplied through a high pressure gas main at a higher than a residential gas supply line

A

True

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8
Q

In a high pressure gas burner, gas is supplied and mixed with air inside the burner

A

True

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9
Q

In a low pressure gas burner air passing through a mixing chamber outside the burner draws gas in from the zero pressure gas chamber

A

True

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10
Q

Combination burnes can use fuel oil or natural gas

A

Gas

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11
Q

Coal is a solid black material formed when organic material is hardened in the earth over millions of years

A

True

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12
Q

Coal used for firing steam boilers is fed using pulverized coal, stokers, or hand firing

A

True

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13
Q

Stokers are mechanical coal-feeding devices that feed coal into the furnace of the boiler at a consistant rate

A

True

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14
Q

An underfeed stoker is a coal feeding device that introduces coal from under the fire

A

True

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15
Q

A screw-fedder stoker is a stoker that uses a low-speed feed screw to advance coal from a hopper to the retort

A

True

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16
Q

A ram-feed stoker is a stoker that uses a feeder block ram to feed the coal into the retort

A

True

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17
Q

Combination controls regulate fuel supply, air supply, air to fuel ratio and removal of gases of combustion in a boiler

A

True

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18
Q

An ON/OFF control system controls the amount os steam produced by starting and stopping the burner

A

True

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19
Q

An ON/OFF Control system is commonly used for small package boiler and where the steam load allows the burner to start and stop as required

A

True

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20
Q

A flame safegurd system monitors the burner start-up sequence and the main flame and controls the firing rate during normal operation

A

True

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21
Q

A flame safeguard programmer sequences burner function for prepurge, ignition trials, run period and postpurge

A

True

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22
Q

A flame scanner senses if the pilot light and/or main flame are lit

A

True

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23
Q

Combustion efficiency is the ability of a burner to burn fuel as indicated by amount of unburned fuel and exces air in the gases if combustion

A

True

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24
Q

Combustion efficiency can be determined by evaluating the flue gas

A

True

25
Q

A pollutant is matter that contaminates air soil or water

A

True

26
Q

Air pollution regulation are enacted at the federal level or at the state and local level

A

True

27
Q

Building automation system monitor boiler operation for safety and afficiency

A

True

28
Q

Fuel oil is a liquid fossil fuel that consist primarily of carbon, hydrogen and moisture

A

True

29
Q

the temperature at wich a fuel gives off vapor that flashes when expose to an open flame

A

Flash point

30
Q

The temperature to which fuel oil must be heated to burn continuesly when expose to an open flame

A

Fire point

31
Q

The lowest temperature at which fuel oil flows as a liquid

A

Pour point

32
Q

The ability of the fuel to be vaporize

A

Volatility

33
Q

Viscosity limits are the specification os viscocity measurements required to properly transport and atomize the fuel

A

True

34
Q

The four grades of fuel

A 
#2
#4
#5
#6 
Fuel oils
35
Q

Distillate fuel oil. Low on viscocity

A

Number 1 and 2 fuel oil

36
Q

A heavy residual fuel oil

A

Number 4, 5 and 6 fuel oil

37
Q

Natural gas is a colorless and odorless fossil fuel that consist primarily os methane, small amounts of ethylene, and other gases

A

True

38
Q

In a low pressure gas system, gas is reduced from suplier gas pressure to approximately 0 psi

A

True

39
Q

In a high pressure gas system, gas is supplied through a high pressure gas main at a higher pressure than a residential gas supply line

A

True

40
Q

In a high pressure gas burner, gas is supplied and mixed with air inside the burner

A

True

41
Q

In a low pressure gas burner, air passing through a mixing chamber outside the burner draws gas in from zero pressure gas chamber

A

True

42
Q

Combination burners can use fuel oil or natural gas

A

True

43
Q

Coal is a solid black fuel formed when organic material is hardened in the earth over millions of years

A

True

44
Q

Coal used for firing steam boilers is fed using pulverizes coal, stokers, or hand firing

A

True

45
Q

Stokers are mechanical coal-feeding devices that feed coal into the furnace of the boiler in a consistant rate

A

True

46
Q

An underfeed stoker is a coal feeding device that introduces coal from under the fire

A

True

47
Q

A ram-feed stoker is a stoker that uses a feeder block ram to feed the coal into the retort

A

True

48
Q

Combustion control regulates fuel supply, air supply, air-to-fuel ratio, and removal of gases of combustion in a boiler

A

True

49
Q

An ON/OFF control system controls the amount os steam produced by starting and stopping the burner

A

True

50
Q

An ON/OFF control system is commonly used for small package boilers and where the steam load allows the burner to start and stop as required

A

True

51
Q

A flame safeguard system monitors the burner start-up sequence and the main flame and controls the firing rate during normal operation

A

True

52
Q

A flame safeguard programmer sequence burner function for prepurg, ignition trials, run period, and postpurge

A

True

53
Q

A flame scanner senses if the pilot light and/or main flame are lit

A

True

54
Q

Combustion efficiency is the ability of a burner to burn fuelas indicated by the amount of unburned fuel and excess air in the gases of combustion

A

True

55
Q

Combustion efficiency can be determined by evaluating the flue gas

A

True

56
Q

A pollutant is matter that contaminates air, soil or water

A

True

57
Q

Air pollution regulations are enacted at the federal level or at the state and local level

A

True

58
Q

Building automation system monitor boiler operation for safety and efficiency

A

True

5 Fuel System (4 decks)

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