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All Journal Majalah Forum Teknik UGM Jurnal technoscientia Jurnal Teknologi Rekayasa Mesin Jurnal Rekayasa Mesin JURNAL TEKNOLOGI TECHNOSCIENTIA Jurnal Teknologi dan Rekayasa Alat Berat (JTRAB)
Soeadgihardo Siswantoro
Departemen Teknik Mesin, Sekolah Vokasi, Universitas Gadjah Mada
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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UNJUK KERJA ALAT PENGERING GULA SEMUT DUA BELAS SUSUN MENGGUNAKAN BAHAN BAKAR LPG Johanes, Susanto; G., Sukartono,; S., Soeadgihardo
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 2 Februari 2015
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (215.788 KB) | DOI: 10.34151/technoscientia.v7i2.205

Abstract

Modified dryer is used as an alternative methodfor drying the production of coconut sugars (gula semut / gula merah) or coconutcrystal sugars for farmers or micro entrepreneurs, especially when production is increased or in the rainyseason. This study aims to determine the performance of drier gula semut own design, with LPG fuel. Construction drier consists of a framework to support stainless steel pans as the container of sugars, measuring 78 cm x 74 cm x 4 cm, which is composed of twelve level, with a gap distance of 5 cm. The pans arranged vertically, so that the bottom of the pan gets hot either by radiation, conduction, and convection by the flow of hot air that is exhaled by the blower, while the pans that is above it also will get heat by conduction and convection by hot air which flows through it. The tests of dryers are conducted in two methods: with load and without load. The weather conditions are dry bulb temperature of 30°C and 27°C wet bulb. In the no-loaded testing, to achieve a working temperature of the drying chamber at 60 °C, it takes approximately 40 minutes. While testing with load is drying 8 kg / pan and 10 kg / pan sugars. On this burden, to reduce the water content of about 6% to between 2-3%, required 5.5-7 hoursdrying time, and required the consumption of fuel (LPG) between 1.15 to 1.35 kg. The rate of the average water content decreasedis 0.66% per hour, and the total efficiency of the dryer (ηT) is 23%.
PEMANFAATAN PANAS PADA KOMPOR GAS LPG UNTUK PEMBANGKITAN ENERGI LISTRIK MENGGUNAKAN GENERATOR THERMOELEKTRIK Sugiyanto, Sugiyanto; Siswantoro, Soeadgihardo
Jurnal Teknologi Vol 7 No 2 (2014): Jurnal Teknologi
Publisher : Jurnal Teknologi, Fakultas Teknologi Industri, Institut Sains & Teknologi AKPRIND Yogyakarta

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Abstract

Pemerintah Indonesia meluncurkan program konversi minyak tanah ke LPG pada tahun 2007 menyebabkan jumlah kompor Gas LPG di masyarakat semakin banyak. Kompor LPG memiliki efisiensi thermal yang tinggi sehingga memanfaatkan sebagian panas dari kompor ini akan memberi nilai tambah ekonomis. Salah satu teknlogi yang sangat dimungkinkan untuk diaplikasikan dalam penkonversian panas menjadi energi listrik pada kompor gas LPG tersebut adalah teknologi thermoelektrik. Penelitian ini memanfaatkan panas dari kompor gas LPG RI-511A dan RI-300HP dengan menggunakan thermoelectric generator tipe TEG 127-40A dan TEG 126-40A. Panas ini dikonversi menjadi energi listrik mengunakan efek Seebeck yang ada pada thermoelektrik. Dari pengujian dan analisa data TEG 126-40A lebih baik dalam pembangkitan tegangan dan arus dibandingkan TEG 127-40A. Pengujian dengan kompor RI-551A, nilai tegangan dan arus mencapai 2.69 V, 0.12 A lebih kecil dibandingkan menggunakan TEG 126-40A yang mencapai 3.59 V dan 0.34 A. Sedangkan nilai tegangan dan arus yang dibangkitkan TEG 127-40A pada kompor RI-300HP mencapai 3.77 V dan 0,39 A, masih lebih kecil dibandingkan menggunakan TEG126-40A yang mencapai 4.17 V dan 0.48 A. Kata kunci : , , , .
UNJUK KERJA ALAT PENGERING GULA SEMUT DUA BELAS SUSUN MENGGUNAKAN BAHAN BAKAR LPG Johanes, Susanto; G., Sukartono,; S., Soeadgihardo
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 2 Februari 2015
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v7i2.205

Abstract

Modified dryer is used as an alternative methodfor drying the production of coconut sugars (gula semut / gula merah) or coconutcrystal sugars for farmers or micro entrepreneurs, especially when production is increased or in the rainyseason. This study aims to determine the performance of drier gula semut own design, with LPG fuel. Construction drier consists of a framework to support stainless steel pans as the container of sugars, measuring 78 cm x 74 cm x 4 cm, which is composed of twelve level, with a gap distance of 5 cm. The pans arranged vertically, so that the bottom of the pan gets hot either by radiation, conduction, and convection by the flow of hot air that is exhaled by the blower, while the pans that is above it also will get heat by conduction and convection by hot air which flows through it. The tests of dryers are conducted in two methods: with load and without load. The weather conditions are dry bulb temperature of 30°C and 27°C wet bulb. In the no-loaded testing, to achieve a working temperature of the drying chamber at 60 °C, it takes approximately 40 minutes. While testing with load is drying 8 kg / pan and 10 kg / pan sugars. On this burden, to reduce the water content of about 6% to between 2-3%, required 5.5-7 hoursdrying time, and required the consumption of fuel (LPG) between 1.15 to 1.35 kg. The rate of the average water content decreasedis 0.66% per hour, and the total efficiency of the dryer (ηT) is 23%.
Turbin Hibrid Bi-Directional Sebagai Pemanen Energi pada Thermoacoustic Engine Winarto, Eko Wismo; Sugiyanto, Sugiyanto; Siswantoro, Soeadgihardo; Djati, Isworo
Jurnal Rekayasa Mesin Vol 12, No 1 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.01.3

Abstract

Bi-directional turbines that are commonly applied to convert wave energy into motion energy are the types of Impulse turbines and Wells turbines. Both types of turbines each have advantages and disadvantages. In this research, hybrid turbine type is designed and made to bridge the weaknesses in impulse turbine and turbine wells. Hybrid turbines are made by placing impulse turbines on the outside while turbine wells placed on the inside. In this research, the variation of hybrid bi-directional turbine design aims to find out the most optimal design of this turbine type. Six variations were carried out including a hub to tip ratio of 0.5 with 4 and 5 Wells blades, a hub to tip ratio of 0.6 with 4 and 5 Wells blades, and a hub to tip ratio of 0.7 with 4 and 5 Wells blades. From the test results on thermoacoustic engine media, based on the hub to tip ratio, the most optimal hub to tip ratio is in the order of 0.7 then 0.6, and 0.5. Whereas based on the number of Wells blade, obtained the number of Wells blade 5 is more optimal than the number of Wells blade 4.
Optimasi Kinerja Pompa Sentrifugal Produk Lokal dengan Modifikasi Impeler dan Analisis visualisasi Aliran Soeadgihardo Siswantoro; S Sutrisno
Forum Teknik Vol 27, No 2&3 (2003)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

A preliminary  efort to  inrprove  an impeller  design for domestic  centrifugal  pump  with  165 mm  outlet  diameter, semi open impeller  has been  initiated  implementing flow visualization method. The  study was focused on  several  impellers  having  different inlet  and  outlet angles, each of  them  has  the  same blade  thickness.A facitity has  been constructed  to  measure  the  performance for those  impellers  at similar speed,  200b  rpm.  The visualization  technique  applied  in  the  study  was  wet paint  method applying  point  on the  surface  of the  impellers  with several  layers  of dffirent  colors  and wetness.Impellers  hwing  optimum  inlet  ond  outlet angles  have been  identified.Keywords :  impeller, flow visualization
Rancang Bangun Alat Pengering Produk Pertanian Tipe Tray Berputar Susanto Johanes; Soeadgihardo Siswantoro; Irfan Bahiuddin
Jurnal Rekayasa Mesin Vol 15, No 2 (2020): Volume 15, Nomor 2, Agustus 2020
Publisher : Jurusan Teknik Mesin - Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v15i2.1861

Abstract

Indonesia adalah salah satu negara tropis sehingga banyak sumber energi yang dapat dimanfaatkan untuk keperluan pertanian, termasuk sebagai sumber energi alat pengering hasil panen. Dengan demikian, di berbagai negara tropis, banyak dijumpai alat-alat pengering produk pertanian dengan memanfaatkan berbagai sumber energi, salah satunya adalah pengering dengan energi surya sebagai sumber panas. Namun, alat-alat seperti ini sulit untuk digunakan oleh para petani yang berdomisili di beberapa tipe lokasi, seperti lereng pegunungan yang cukup terjal. Sinar matahari yang optimal sulit diperoleh karena tertutup oleh pepohonan dan tebing. Oleh karena itu, makalah ini bertujuan untuk menyampaikan hasil rancangan alat pengering berbahan bakar kayu bakar dengan desain yang efektif dan efisien. Alat pengering ini adalah jenis tak kontak langsung, tipe tray bertingkat yang berputar serta mempunyai kelebihan dari sisi kepraktisan dan meminimalkan energi panas yang terbuang. Produk pertanian yang dikeringkan ditaruh secara merata di atas tray-tray lima tingkat, selanjutnya udara panas mengalir dari bawah memanasi produk pertanian mulai dari tingkat satu sampai dengan tingkat lima. Produk pertanian tersebut dapat direlokasi dengan cara memutar tuas masing-masing tray secara berurutan, sehingga produk pertanian jatuh dengan sendirinya ke tingkat tray dibawahnya. Dengan cara demikian, harapannya produk pertanian memperoleh kalor pengeringan yang sama atau hampir sama dan merata. Alat pengering telah diujicoba untuk mengeringkan biji kakao yang difermentasi dan hasil pengeringannya baik dengan pengurangan kadar air sampai hampir 50%.
Perancangan Sistem Hidrolik Mesin Press Sampah Plastik Tipe Vertikal Kapasitas 1000 Kg Sanjaya, Antonius David; Sugiyanto, Sugiyanto; Siswantoro, Soeadgihardo; Wibowo, Setyawan Bekti
Jurnal Teknologi dan Rekayasa Alat Berat Vol 1 No 2 (2024): JTRAB Volume 1, No 2, 2024
Publisher : Department of Mechanical Engineering, Vocational College, Gadjah Mada University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtrab.v1i2.11792

Abstract

Waste is an ongoing environmental issue, escalating with the increasing human population on Earth. Plastic waste, commonly found in Temporary Storage Places (TPS) for waste, poses a significant concern. In the Condongcatur area, one TPS produces waste with a daily volume of 1022 m3, consisting of 52% plastic waste. The percentage of plastic waste can be calculated using the density of PET at 1.35 gr/cm3, resulting in a daily mass of approximately 717 kg. To solve this problem, a vertical hydraulic press machine with a capacity of 1000 kg has been designed. The 1000 kg capacity press machine utilizes a hydraulic cylinder with CHSG (SMC) specifications, featuring a bore diameter of 40 mm, rod diameter of 22 mm, and an 800 mm stroke. The calculated working pressure is 93 bar, necessitating a hydraulic pump with a capacity of 6.62 CC/REV, a hydraulic motor with a power capacity of 1.5 KW or 2 HP, and a full load speed of 1400 rpm. The required hydraulic tank capacity is a minimum of 8 liters, ensuring the smooth operation of the entire system. This press machine effectively compacts plastic waste, saving space, and facilitating the recycling process.
Co-Authors Bahiuddin, Irfan Djati, Isworo G., Sukartono, G., Sukartono, S Sutrisno Sanjaya, Antonius David Setyawan Bekti Wibowo Sugiyanto - Sugiyanto Sugiyanto Susanto Johanes Susanto Johanes Winarto, Eko Wismo