KINERJA PEMBANGKIT LISTRIK DUAL-FUEL KAPASITAS 5 kW BERBASIS GASIFIKASI SEKAM PADI BERUNGGUN TETAP

Abstract

<p>Abstract: Producer gas from rice husk gasification is the potential gaseous fuel for partially<br />substituting diesel fuel demand as it contains combustible gases (CO, H<br />2<br />). This<br />research examined the effects of air flow rate entering the diesel engine and electrical load on<br />diesel fuel consumption, electrical power of generator, and rice husk specific consumption in<br />gasifier. Gasification process took place in a downdraft air-blown gasifier with 10 cm throat<br />diameter. At rice husk consumption rate of 1 kg/hour and temperature of 827<br />C, the Specific<br />Gasification Rate (SGR) was 81.53 kg/(m<br />.hour) and the solid residue was 36% (w/w) of input<br />biomass. Total combustible gas content in producer gas was 21.6%. It was observed that diesel<br />fuel saving of 9.32% was obtained at air flow rate of 1.55 × 10<br />2<br />-3<br />m<br />/s and electrical load of 95%<br />from maximum generator power. Using producer gas at flow rate of 0.91 × 10<br />3<br />/s caused<br />generator de-rating of 8.33% at electrical load of 10%. Generating 1 kWh of electricity at air flow<br />rate of 2.99 × 10<br />-3<br />m<br />/s and electrical load of 95% required 1.85 kg of rice husk. A kilogram of<br />rice husk may substitute 0.26 L of diesel fuel at this air flow rate and load.<br />3<br />Keywords: rice husk; gasification; dual-fuel; specific consumption; de-rating<br />, and CH<br />4<br />o<br />-3<br />m<br />3</p>