Chapter 91- Oil Burners For Heating Boilers Flashcards
Oil burners can be sub divided into three classes
Air and steam atomizing burners
Mechanical or pressure atomizing burners
Centrifugal or rotary cup burners
Air atomizing oil burner is composed of four parts
Nozzle body
Spring
Swirler
Tip
Air atomizing oil burner requires a
Air compressor
Do most industrial boilers use air or steam
Steam
Why do industrial burners use steam
Because it has more inherent latent heat
An air atomizing oil burner may be regulated by
By changing the amount of fuel delivered to the burner by throttling the air supply
Mechanical atomizing burners have the advantage
Of having constant capacity
Mechanical atomizing oil burners are made of four parts
Tip
Disc
Locknut
Strainer
In a mechanical atomizing oil burner if fuel is running under full capacity it must be
Shut off
In a constant capacity mechanical atomizing oil burner at what Kpa is the oil supplied to the burner tip?
700 Kpa
What gives the oil a swirling motion in a mechanical atomizing oil burner?
The radial slots
In a mechanical atomizing oil burner what auxiliary parts typically come with it?(5)
Oil pump Fan Electric motor drive Ignition transformer Igniter
What is the principle difference between a constant capacity atomizing oil burner and a modulating capacity mechanical atomizing oil burner?
In a modulating capacity mechanical oil burner the rate of fuel can be adjusted to meet current il demands. Where as the constant capacity mechanical atomizing oil burner must remain at the same fuel pressure
How does a modulating capacity mechanical atomizing oil burner control its fuel flow?
By bleeding off part of the oil from the swirling chamber through a channel in the disc and barrel back to the fuel tank
What temperature must heavy oil be preheated to in order to burn
95 degrees Celsius
