Unit 21 - Chapter 92 Flashcards
An atmospheric burner has air entering around the burner which is termed
Secondary air
The main function of a gas burner is
Provision of oxygen fuel contact
The amount of premix air to an atmospheric burner should be
30 - 40%
A refractory burner disadvantage is
High initial cost
A very popular packaged boiler gas burner is the
Ring burner
An atmospheric burner head which is very popular on heating boilers is the
Rectangular type
When a gas fired burner is burning fuel properly
It will have a blue flame with short yell tips
Gas burner for heating boilers can be divided into two classes
Pre and after mix burners
The Venturi tube in the atmospheric burner mixing head has a
Gradually increasing cross sectional area
___ burner heads are most common for use in heating boilers
Rectangular
One if the advantages of the refractory gas burner is the
Gas and air mixture is thoroughly preheated before it enters the furnace
The purpose of the deflector vanes in the center of a ring gas burner is to
Promote turbulence of the gas and air mixture
The purpose of the deflector vanes in the center of a ring gas burner is to
Promote turbulence of gas and air mixture
One of the advantages of using natural gas as a fuel in a boiler is
That no storage space is required
An intermittent pilot
Lights the main flame and remains on with it
