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Low Pressure Boilers, Fuel System Questions And Correct Answers
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Low Pressure Boilers, Fuel System Questions AndCorrect Answers
The rotary cup burner atomizes the fuel oil using _______. - a spinning cup and high
velocity air
In a low pressure gas burner, gas is mixed with air in the ____________. - mixing chamber
before the burner register
In a high pressure gas burner, the gas mixes with the air on the inside of the ________. -
burner
A ____ is a narrowed portion of the tube. - venturi
Low pressure gas system, the manual reset can't be opened until the _________. -pilot is
lit
_______ coal is a hard coal. - Anthracite
In a high pressure gas system, the plant pressure ________ valve reduces gas pressure
to the line pressure used in the system. -regulating
_______ coal is coal that is ground to a fine powder. - Pulverized
A _______ is a mechanical device for feeding coal consistently to the burner. - stoker
A(n) _______ is an air pressure-activated switch that closes after proving sufficient
pressure of combination air from the forced draft fan. - air proving switch
, A combination burner allows the operator to switch fuels ___________. -for economy, if
there is a shortage of a fuel, if there is a failure in the fuel system being used
Hard coal is __________. -anthracite coal with a high carbon content
Soft coal is ______________. -bituminous coal with a high volatile content
A(n) ________ sensor senses light frequencies that are higher than those visible to the
eye. - ultraviolet
A(n) _______ is a safety device that senses if the pilot light and/or main flame are lit. -
flame scanner
The _____ of fuel oil is the lowest temperature at which it will flow as a liquid. - pour point
Temperature of fuel which fuel oil gives off vapor that flashes. - Flashpoint
Temperature of fuel world burn continuously when expose to an open flame - Fire point
The internal resistance of fuel to flow is the __________. - Viscosity
To decrease the viscosity of fuel, its temperature must be __________. - Increased
A leak on the fuel suction line between the tank and the section side of the fuel, pump
would result in__________. - The suction gauge pulsating, air entering the suction line,
and pulsating of the fire in the boiler
Stokers were developed to __________. - Increase the efficiency of burning coal, keep
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