Fuel (gas or oil) fired glass metling tanks Flashcards
1
Q
How is the melt pool heated?
A
~ mostly radiation from crown (inside ceiling) which was convection heated by combustion products
2
Q
Why are the melting tanks shallow?
A
~ limited penetration depth of the downward radiation flux
3
Q
What are regenerators?
A
~ heat transfer to brick checkerwork that later preheats incoming air
~ reduces overall energy consumption by 50-70%
4
Q
How do you maximize energy?
A
~ max air preheat and minimum excess air
5
Q
Why do we replace combustion air with oxygen?
A
~reduces the volume of exhaust gases by 70%, reducing the energy lost by hot combustion gas
~ eliminates nitrogen witness gas, preventing NOx formations