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Susastriawan, Anak Agung Putu
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EFFECT OF OPERATING PARAMETER ON THERMAL CONVERSION OF GASIFICATION OF PONGAMIA PINNATA SHELLS Susastriawan, Anak Agung Putu
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 5 No 1 Agustus 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (454.731 KB) | DOI: 10.34151/technoscientia.v5i1.505

Abstract

Typically, composition of producer gas from biomass gasification are combustible gas (CO, H2, and CH4), and noncombustible gas (CO2 and N2). A composition of combustible gas affects a calorific value of producer gas from biomass gasification. Composition of CO, H2, CH4, CO2 and N2 in producer gas is affected by producer gas flow rate and equivalence ratio. This experimental work aims to study an effect of producer gas flow rate and equivalence ratio on composition and calorific value of producer gas from gasification of Pongamia pinnata shells. Gasification of these shells is carried out in a 20 kWe downdraft wood gasifier. Original conical grate of gasifier reactor has been replaced with smaller diameter to encounter a blocking problem in grate section of reactor. Air flow rate into a gasifier reactor is controlled using different number of air nozzle opening. Globe valve is used to control producer gas flow rate. Sample of producer gas is measured using Gas Chromatograph for different flow rate and air nozzle opening. Calorific value of producer gas is calculated from percentage of combustible gas present in producer gas. Equivalence ratio is a ratio of air/biomass theoretical to ratio of air/biomass actual. Optimum calorific value of producer gas from Pongamia pinnata shells gasification is obtained at producer gas flow rate of 9.9 g/s and at equivalence ratio of 0.5.
PEMBANGKIT LISTRIK TENAGA PANAS MATAHARI BERBASIS MESIN STRILING UNTUK SKALA RUMAH TANGGA Syafriyudin, Syafriyudin; Susastriawan, A.A.P.; Sabdulah, Mursid; Gulo, Fitono
Jurnal Teknologi Vol 6 No 2 (2013): Jurnal Teknologi
Publisher : Jurnal Teknologi, Fakultas Teknologi Industri, Institut Sains & Teknologi AKPRIND Yogyakarta

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Abstract

Indonesia sebagal negara tropis memiliki potensi untuk pengembangan pemanfaatan energl surya sebagal salah satu dari banyak sistem konversl energl surya, sistem konversl energl surya ini dapat di terapkan untuk mengatasi semakin menipis nya cadangan bahan bakar konvensional yang ada. Dalam penelilian ini menunjukkan bahwa temperatur relektor sebanding dengan temperatur silinder panas, reflektor aluminium dapat mematulkan panas matahari ke silinder panas dengan baik Uji unjuk kerja mesin striling tanpa beban diperoleh pada suhu 900C mesin start running dengan kecepatan 160 rpm sedangkan pada uji unjuk kerja mesin striling berbeban pada suhu 96 0C mesin start running dengan kecepatan 160 rpm. Kecepatan putaran mesin maksimal dicapai pada suhu 66,90C dengan kecepatan putar mencapai 482 rpm untuk kondisi uji unjuk kerja mesin Stirling tanpa beban sedangkan untuk kondisi uji unjuk kerja mesin slir1ing berbeban kecepatan putar mesin stir1ing dicapai pada suhu 1620C dengan kecepatan putar 236 rpm, pada percobaan berbeban generator menghasilkan tegangan 15, 7 volt dc
PENGARUH VARIASI TINGGI LIFT, LOBE SEPARATION ANGLE CAMSHAFT, DAN ROLLER ROCKER ARM TERHADAP UNJUK KERJA MOTOR BENSIN EMPAT LANGKAH Muhajir, H K; Susastriawan, A A P; Aziz, M H N; Rompas, P T D
FRONTIERS: JURNAL SAINS DAN TEKNOLOGI Vol 1, No 1 (2018): April 2018
Publisher : Universitas Negeri Manado

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Abstract

Salah satu cara untuk meningkatkan unjuk kerja motor bensin empat langkah adalah dengan memodifikasi camshaft. Memodifikasi camshaft bertujuan untuk mengatur waktu pembukaan katup (valve open), tinggi pembukaan katup (valve lift), dan mengatur jarak puncak pembukaan katup (lobe separation angle). Penambahan roller rocker arm juga dapat berpengaruh terhadap unjuk kerja mesin yang membuat camshaft berputar dengan gesekan yang lebih kecil. Tujuan dari penelitian ini adalah mengetahui pengaruh tinggi lift katup, lobe separation angle camshaft, dan roller rocker arm terhadap unjuk kerja motor bensin empat langkah. Dari hasil pengujian dynotest menunjukkan camshaft standar menghasilkan daya maksimal sebesar 13,6 HP dan torsi maksimal sebesar 13,7 N.m. camshaft modifikasi menghasilkan daya maksimal sebesar 13,8 HP dan torsi maksimal 11,59 N.m. camshaft modifikasi + roller rocker arm menghasilkan daya maksimal sebesar 14,6 HP dan torsi maksimal sebesar 12,75 N.m.Camshaft standar menghasilkan nilai sfc terendah sebesar 0,16141 kg/kW.jam. Camshaft modifikasi sebesar 0,20088 kg/kW.jam. Camshaft modifikasi + roller rocker arm sebesar 0,18098 kg/kW.jam.Pada pengujian emisi gas buang menunjukkan camshaft modifikasi + roller rocker arm menghasilkan kadar emisi yang paling ramah lingkungan.Kata kunci: Camshaft, Lift, Lobe Separation Angle, Roller Rocker Arm, Valve
EFFECT OF OPERATING PARAMETER ON THERMAL CONVERSION OF GASIFICATION OF PONGAMIA PINNATA SHELLS Susastriawan, Anak Agung Putu
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 5 No 1 Agustus 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v5i1.505

Abstract

Typically, composition of producer gas from biomass gasification are combustible gas (CO, H2, and CH4), and noncombustible gas (CO2 and N2). A composition of combustible gas affects a calorific value of producer gas from biomass gasification. Composition of CO, H2, CH4, CO2 and N2 in producer gas is affected by producer gas flow rate and equivalence ratio. This experimental work aims to study an effect of producer gas flow rate and equivalence ratio on composition and calorific value of producer gas from gasification of Pongamia pinnata shells. Gasification of these shells is carried out in a 20 kWe downdraft wood gasifier. Original conical grate of gasifier reactor has been replaced with smaller diameter to encounter a blocking problem in grate section of reactor. Air flow rate into a gasifier reactor is controlled using different number of air nozzle opening. Globe valve is used to control producer gas flow rate. Sample of producer gas is measured using Gas Chromatograph for different flow rate and air nozzle opening. Calorific value of producer gas is calculated from percentage of combustible gas present in producer gas. Equivalence ratio is a ratio of air/biomass theoretical to ratio of air/biomass actual. Optimum calorific value of producer gas from Pongamia pinnata shells gasification is obtained at producer gas flow rate of 9.9 g/s and at equivalence ratio of 0.5.
Co-Authors Aziz, M H N Gulo, Fitono Muhajir, H K Rompas, P T D Sabdulah, Mursid Syafriyudin