Hourly Energy Use for the Covered Furnace It takes almost twice as much energy to hold the metal at 1,400 o F compared to holding at 1,100 o F
It takes almost twice as much energy to hold the metal at 1,400 o F compared to holding at 1,100 o F Hourly Energy Use for the Uncovered Furnace
Hourly Energy Use for the Covered/Uncovered Furnace The uncovered furnace holding at 1,400 o F uses almost five times (!) more energy compared to the covered furnace holding at 1,100 o F
Hourly Energy Use for the Covered/Uncovered Furnace Not using a cover doubles the energy losses of the furnace at the low end 1,400 o F of the range and triples them at 1,400 o F
OBJECTIVES Determine the heat losses during ladle transfer of molten aluminum. Evaluate the effect of improved ladle insulation Assess the impact of continuous vs. interrupted ladle use on heat losses Part II - Transfer
Instrumentation The transfer ladle was instrumented for real time data acquisition
CONCLUSIONS The “insulated” ladle had a smaller temperature loss whether both ladles were started cold or in the middle of continuous cycles. During the stationary cooling curve test the “insulated” ladle outperformed the “standard” ladle by 139% in reducing the temperature drop during the first twenty minutes. The performance of both ladles improved noticeably as they were used repeatedly without significant down time. Adding a cover to an insulated ladle can cut the heat lost during a twenty minute transfer cycle by nearly half, compared to a “standard”, non-insulated ladle.