| Summary: | The furnace with kerosene fuel have many heat energy lost in melt
aluminium process, low efficient of melting material. This is not safety which
price of kerosene is expensive and difficult to find it.
Furnace tube was made by cutting plat process, rolling, maked a hole and
welding the metal sheet. Furnace wall was made by mix the refractories castable
cement and water, put the knot on banana tree. The kowi was make by cutting
pipe process, cutting the sheet metal cover, handle and welding this all. Cover of
furnace was made by desaign the pattern on the sheet metal and cutting it.
The results of analisis, induction furnace are needed 1,78 kWh for melting
1 kg aluminium and the cost is Rp 1589,54 for 2200 VA house capacity. The
volume of gas LPG 0,81 kg are needed to melt 1 kg aluminium takes 29 minutes
and the cost is Rp 4050. The volume of gas LPG 1,175 kg are needed to melt 2 kg
aluminium takes 38 minutes and the cost as many as Rp 5875.
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