CO2 step wise emission reduction is necessary and possible
Tuesday 17th September 12:05 - 12:25
The share and use of Electric melting is today steadily growing again. This is not new, as some decennia's ago it already was quite popular. The first furnace that used electric current was built in 1905 following Sauvageon's design was melting glass for window glass production. Since that time many different designs were tried. In more recent decennia's electric melting became less popular due to low price and wide availability of fossil fuels. Just in recent years with the fear of Global Warming and plans for CO2 reduction the interest in full or partial (Hybrid) electric melting is getting more attention again. The generation of electricity by alternative energy sources is of course a great help here as it brings costs of Electricity finally down and will be CO2 free. In Europe the average generation of electricity is already in range of 38% by renewable resources such as wind, solar hydro and bio. The question for the future is not if we will have more electric energy usage for glass melting, but if the future will be All Electric Melting (AEM) or hybrid such as GS H2EM that means a balance between using more Bio fuels or Hydrogen and some amount of fossil fuels with the majority of the heat coming from electric melting. This also allows step by step to reduce our CO2 footprint. The paper will show some examples of the past & present and some ideas for the future strongly supported with mathematical modeling of new furnace designs. Also the use of advanced model based control will be shown.