Burners Flashcards
What are burners
A device or a group of devices that introduce gas (With or without oxygen) into the combustion zone
What is primary air
Mixed prior to ignition
What is secondary air
Mixed during combusion
What is tertiary air
Added to control flame shape and emissions
Diffusion flame
Increased radiation heat
Fuel and oxygen are separate before burning
Burns slower
More soot
Orange-yellow in color
What heat transfer does infrared burner use
direct radiation
Premix burner
Mixed oxygen and gas before ignition
Hotter flame
What heat transfer does direct fire use
Mixture of radiation and connection
What heat transfer does low temp indirect use
Uses a fan to carry the heat
What heat transfer does High temp indirect use
Re-radiate energy to work
What does a diffuser do
Applies axial force by swirling/spinning the air stream
What is an orifice plate for
measures flow
The ultimate percentage of CO2 in the flue products of natural gas is
12 %
