PENGARUH TEKANAN UDARA TERHADAP SIFAT PEMBAKARAN MINYAK RESID MENGGUNAKAN VAPORIZING BURNER UNTUK PELEBURAN ALUMINIUM

PRABAWA, PUNTO ARI (2010) PENGARUH TEKANAN UDARA TERHADAP SIFAT PEMBAKARAN MINYAK RESID MENGGUNAKAN VAPORIZING BURNER UNTUK PELEBURAN ALUMINIUM. Other thesis, Universitas Sebelas Maret.

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Abstract

The aim of this research is to investigate the effect of air pressure to combustion properties of residual oil fuel and the air-fuel ratio. The heat energy resulted by the combustion is used for aluminium casting. The residual oil fuel combustion used vaporizing burner, with 4 variations of air pressure ; 2, 3, 4 and 5 bars. The air pressure was supllied by air compressor. The fuel composition is 100% residual oil and the fuel pressure is kept constant on 5 bars. In combustion test, the flame length is observed visually and measured manually. The energy usage evaluation of the residual oil for aluminium casting fuel is observed in the case of inner furnace temperature, fuel consumption and time depth to melt. The result of the research indicated that the increasing of air pressure will improve the density of the air that will enhance the actual Air-Fuel Ratio (AFR)act. With the increasing of air pressure will improve the flame length. The best flame profile happens at 4 bar air pressure with 0,70 metre length, with stable flame and there are not much smoke. In the furnace (area A), the optimum temperature was 1345 °C at 4 bar air pressure. The increasing of air pressure will improve the actual air-fuel-ratio (AFR)act. Keywords : residual oil, air pressure, vaporizing burner, air-fuel ratio, aluminium casting

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