Hello,
I'm new on this forum but wanted to try with a question on radiation of gases. I'm currently developing a model to estimate radiation of a flame in a "zinc fuming furnace". This is a metallurgical process where ZnO is first reduced and evaporated from a molten slag bath (ZnO_slag --> Zn(g)) and later on combusted with air above the slag bath (reverse reaction Zn(g) --> ZnO(s)). The flame above the bath radiates back to the bath and enhances the overal energy efficiency of the process.
The flame in my case consists of various gas species including N2, CO, CO2, H2O, Zn(g), Pb(g), NO(g) and PbO(g),... and contains a lot of fine ZnO(s) particles. In my model, I simplify the gas as a "gray" gas and use the so called "Planck mean absorption coefficient" to estimate the absorption and emission behavior of the regular gas species (H2O, CO, CO2).
The problem is that I don't find the Planck mean absorption coefficients of Zn(g), Pb(g), NO(g) and PbO(g) as a function of temperature! I'm relatively new in the domain of radiation, but is there anybody who has experience in this area who has worked on similar radiation problems? Would there exist such coefficients for these special gas species (Zn(g), Pb(g), NO(g) and PbO(g))or is there very little chance to find this?
Thanks in advance,
Karel Verscheure
karelverscheure@hotmail.com
I'm new on this forum but wanted to try with a question on radiation of gases. I'm currently developing a model to estimate radiation of a flame in a "zinc fuming furnace". This is a metallurgical process where ZnO is first reduced and evaporated from a molten slag bath (ZnO_slag --> Zn(g)) and later on combusted with air above the slag bath (reverse reaction Zn(g) --> ZnO(s)). The flame above the bath radiates back to the bath and enhances the overal energy efficiency of the process.
The flame in my case consists of various gas species including N2, CO, CO2, H2O, Zn(g), Pb(g), NO(g) and PbO(g),... and contains a lot of fine ZnO(s) particles. In my model, I simplify the gas as a "gray" gas and use the so called "Planck mean absorption coefficient" to estimate the absorption and emission behavior of the regular gas species (H2O, CO, CO2).
The problem is that I don't find the Planck mean absorption coefficients of Zn(g), Pb(g), NO(g) and PbO(g) as a function of temperature! I'm relatively new in the domain of radiation, but is there anybody who has experience in this area who has worked on similar radiation problems? Would there exist such coefficients for these special gas species (Zn(g), Pb(g), NO(g) and PbO(g))or is there very little chance to find this?
Thanks in advance,
Karel Verscheure
karelverscheure@hotmail.com
