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All Journal Jurnal Dinamis Rekayasa Mesin ROTOR: JURNAL ILMIAH TEKNIK MESIN Journal of Mechanical Engineering Science and Technology Jurnal Voering Jurnal Rekayasa Material, Manufaktur & Energi CARADDE: Jurnal Pengabdian Kepada Masyarakat Infotekmesin Jurnal Dinamis Community Empowerment Jurnal Ilmiah Wahana Pendidikan Jurnal Pengabdian Masyarakat untuk Negeri (UN-PENMAS) Automotive Experiences Abdimas Dinamis Jurnal Medika: Medika
Helen Riupassa
Universitas Sains Dan Teknologi Jayapura, Jayapura, Indonesia
Religion Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Gasohol Engine Performance with Various Ignition Timing Hendry Y. Nanlohy; Suyatno Arief; Helen Riupassa; Martina Mini; Trismawati Trismawati; Mebin Samuel Panithasan
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 6, No 1 (2022)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v6i12022p048

Abstract

Experimental research has been conducted on the effect of ignition timings on the characteristics and performance of gasohol engines such as power, torque, specific fuel consumption, and thermal efficiency. The fuel used in this research is pure gasoline and a mixture of 50% bioethanol (BE50). The results show that the ignition timing that gives the maximum effect occurs at the top and bottom dead points of 9 degrees for gasoline and 12 degrees for BE50 fuel. Furthermore, the maximum power is obtained at 6,500 rpm, and at an ignition time of 12 degrees BTDC the maximum power generated is 4.63 hp, while for an ignition time of 9 degrees BTDC the power generated is 3.38 hp which occurs at 6500 rpm. These results indicate that there is an increase in power of 6.4%. Moreover, the results also show that for optimal gasoline conditions, the amount of energy consumed at an engine speed of 7000 rpm is around 15705.78 kcal/hour, and for BE-50 it is around 12582.03 kcal/hour, where there is a reduction of about 25.44 %. However, in general, it can be seen that during optimal ignition, there is a saving in fuel consumption in the gasoline-BE50 mixture, while at the same time producing a fairly large thermal efficiency. These results indicate that BE50 has the potential to be used as an alternative fuel in small gasoline engines.
Utilization of wood waste into briquettes as an alternative fuel substitute for kerosene in Skouw Yambe Village, Jayapura City Hendry Y. Nanlohy; Helen Riupassa; Jusuf Haurissa; Susi Marianingsih; Syamsudin Usman
Community Empowerment Vol 7 No 10 (2022)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.7118

Abstract

The existence of wood waste along the coast of Skouw Yambe is an abundant natural potential that has not been utilized properly. This Community Service activity aims to utilize the waste into briquettes as an alternative fuel to replace kerosene. The method used in this activity is the socialization, practice and training of making briquettes starting from collecting and drying raw materials, making wood charcoal, refining wood charcoal, mixing wood charcoal with adhesives, printing briquettes, drying briquettes, and cooking trials using briquettes. The result from this community service program is that the people of Skouw Yambe village can have excellent skills and abilities in producing household-scale briquettes from wood waste.
Effects of Eugenol and Cineol Compound on Diffusion Burning Rate Characteristics of Crude Coconut Oil Droplet Helen Riupassa; Suyatno Suyatno; Hendry Y. Nanlohy; Andi Sanata; Trismawati Trismawati; Rachmat Subagyo; Satworo Adiwidodo; Muhammad Akhlis Rizza; Masaki Yamaguchi; Takuya Tomidokoro; Selcuk Sarikoc
Automotive Experiences Vol 6 No 1 (2023)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.8150

Abstract

The burning rate of coconut oil droplets has been investigated experimentally by adding bio-additives of clove oil and eucalyptus oil. Tests were carried out with single droplets suspended on thermocouples at room atmospheric pressure, and room temperature and ignited with a hot wire. The addition of clove oil and eucalyptus oil as bio-additives into coconut oil was 100 ppm and 300 ppm, respectively. The droplet combustion method was chosen to increase the contact area between the air and fuel so that the reactivity of the fuel molecules increases. The results showed that the eugenol compounds contained in clove oil and cineol compounds in eucalyptus oil were both aromatic, and had an unsymmetrical carbon chain geometry structure. Furthermore, this factor can potentially accelerate the occurrence of effective collisions between fuel molecules. Therefore the fuel is combustible, as evidenced by the increased burning rate, where the results show that without bio-additives, the burning rate of crude coconut oil (CCO) is about 0.7 seconds. These results are 0.15 to 0.2 seconds slower than CCO with bio-additive, which is around 0.55 to 0.6 seconds. Moreover, from the observations, it was found that the highest burning rate was achieved in both bio-additives with a concentration of 300 ppm.
ENHANCE THE HEAT AND FLAME CHARACTERISTICS OF SAGO BRIQUETTES WITH AND WITHOUT ADJUSTERS Suyatno Suyatno; Helen Riupassa
ROTOR Vol 16 No 1 (2023)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v16i1.41117

Abstract

Experimental investigations were conducted to assess the impact of an adjuster on the heating efficiency and flame stability of sago waste briquettes. The adjuster was introduced to maintain a consistent burning distance, thereby enhancing the combustion heat of the fuel. Infrared thermometry was employed to monitor the temperature evolution within the briquette and the combustion load, represented by water in a pan. The findings demonstrate that adding an effective adjuster significantly improves the performance of both the briquettes and the stove, resulting in enhanced effectiveness and efficiency. This is evident from the observed increase in combustion temperature and faster boiling time of the water. The consistent burning distance ensures a stable and uniform heat supply to the briquettes, facilitating more efficient fuel utilization as all parts of the fuel can undergo complete combustion and transfer heat to the pan. Molecular analysis reveals that the stability of the burning distance weakens the Van der Waals bonds within the carbon chain, thereby increasing the reactivity of the fuel molecules. Consequently, the fuel exhibits improved heat absorption capability and becomes highly combustible.
Analisa Unjuk Kerja Internal Combustion Engine Tipe T113d Terhadap Emisi Gas Buang Suyatno Suyatno; Helen Riupassa; Marthina Mini
Jurnal Ilmiah Wahana Pendidikan Vol 9 No 18 (2023): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8365395

Abstract

This research aims to determine the performance of the Internal Combustion Engine Type T113D on carbon monoxide (CO) and hydrocarbon (HC) exhaust emissions, engine efficiency and rotation, to obtain efficient CO and HC. The research process was carried out by: testing rotation variations of motor power, torque, thermal efficiency, average effective direct fuel consumption, carbon monoxide and hydrocarbons. The research results showed that at 1000 rpm the highest CO was 10.00% and the lowest CO at 3000 rpm was 8.59%. What then influences the increase and decrease in CO is the reduction in fuel and air which is less homogeneous or does not burn completely in the combustion chamber. So it makes CO become high. High carbon monoxide is influenced by a poor mixture of air and fuel so that it can affect combustion in the combustion chamber, causing low engine speed. The lower the rotation, the higher the hydrocarbons (HC), this is because the mixture of air and fuel is less homogeneous which can affect the level of hydrocarbons.
Community empowerment through the utilization of coconut sap into bioethanol in Sabron Sari Village, Jayapura Regency Hendry Y. Nanlohy; Helen Riupassa; Bonefasius Bao; Susi Marianingsih
Community Empowerment Vol 8 No 7 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.9589

Abstract

The negative impact that can arise with the increase in the population of Papua and limited land for jobs in rural areas, and the use of natural resources that have not been maximized is the occurrence of unemployment. The existence of abundant coconut plants in the Sabron Sari Village, Jayapura Regency, has vast natural potential. However, the reality is that it has not been appropriately utilized so far, especially as an energy source. This community service aims to utilize coconut sap into bioethanol as an alternative fuel to replace kerosene. The method used in this program is socialization and training on the benefits and potential of coconut plants as an alternative fuel source, the process of making bioethanol, and its use on stoves. The results obtained from this program show that the people of Sabron Sari village have a new perspective on the potential of coconut plants and can have excellent skills and abilities in producing household-scale bioethanol from coconut sap.
Utilization of market waste as organic fertilizer for the people of Hinekombe Village, Jayapura Regency Suyatno Suyatno; Bambang Suhartawan; Syamsudin Usman; Helen Riupassa; Susi Marianingsih; Hendry Y. Nanlohy
Community Empowerment Vol 8 No 10 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.10320

Abstract

Pharaa Market is the main market in Hinekombe Village, Sentani District, Jayapura Regency. High market activity has a direct impact on the production of quite a lot of waste, and if it is not handled well, it has the potential to make Pharaa Market a dirty place and reduce consumers' interest in shopping. This will hinder the circulation of the economy and people's income. Therefore, the aim of this community service activity is to increase the village community's understanding and skills in utilizing waste to create organic fertilizer. The methods used are socialization and training. The results obtained indicate that the community has gained a new perspective on the potential of waste and has developed excellent skills in managing waste to produce organic fertilizer.
PEMBUATAN SUMUR BOR UNTUK PENGADAAN AIR BERSIH DI KAMPUNG KOYA TENGAH DISTRIK MUARA TAMI KOTA JAYAPURA PROVINSI PAPUA Rolling Gasperzs; Helen Riupassa; Marthina Mini
JURNAL ABDIMAS DINAMIS : JURNAL PENGABDIAN KEPADA MASYARAKAT Vol 1 No 1 (2020): Jurnal Abdimas Dinamis
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat USTJ

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kampung Koya Tengah merupakan salah satu kampung dari 7 kampung lainnya yang berada di Distrik Muara Tami. Kampung Koya Tengah sejak tanggal 20 Oktober 1987 menjadi bagian RW 12 dari desa Koya Timur sampai dengan 1999. Kemudian pada tahun 2000 sampai 2002 menjadi desa persiapan. Akhirnya pada tanggal 27 November 2002 menjadi desa definitif yang dipimpin oleh kepala kampung pertama “Bapak Deki Mikhael Oksan”. Beliau menjabat dari tahun 2000 sampai 2007. Kemudian pada tahun 2007 sampai januari 2010 jabatan kepala kampung untuk sementara dipercayakan kepada karateker “Bapak Maskun”. Kemudian pada tanggal 26 Februari 2010 bapak Kristianus Ayoka terpilih sebagai kepala kampung untuk periode tahun 2010 sampai 2015. Tahun 2016 kampung Koya Tengah dipimpim oleh bapak Demianus Wenggo yang dipilih langsung oleh masyarakat dan ditetapkan menjadi kepala kampung sejak tanggal 17 Mei 2016 hingga saat ini. Salah satu permasalahan yang dihadapi oleh masyarakat di kampung Koya Tengah adalah ketersediaan air bersih yang terbatas. Hal ini dapat diketahui dari hasil wawancara dengan masyarakat setempat dan juga berdasarkan hasil penyelidikan awal tentang kandungan kapur di dalam air yang dikonsumsi masyarakat setempat. Sumber air yang digunakan oleh masyarakat setempat berasal dari sumur gorong-gorong dengan kedalam air dari permukaan tanah antara 1m – 1,5m dengan kondisi sumur yang tidak tertutup rapat sehingga mudah untuk dimasuki bakteri yang berasal dari permukaan. Oleh sebab itu perlu adanya kegiatan pengabdian kepada masyarakat untuk membantu pengelolaan air bersih yang baik sehingga dapat dimanfaatkan oleh masyarakat. Pelaksanaan kegiatan pengabdian kepada masyarakat dengan menggunakan metode pembuatan sumur bor. Kegiatan pengabdian kepada masyarakat ini menghasilkan satu unit sumur bor yang mana berhasil memproduksi air bersih dengan kadar kapur yang rendah dan lebih higienis untuk dikonsumsi.
PEMBUATAN WASTAFEL PENCUCI TANGAN MECHANICAL UNTUK PENCEGAHAN PENULARAN COVID-19 DI JEMAAT GKI SION PADANG BULAN KECAMATAN HEDAM KOTA JAYAPURA Helen Riupassa; Jusuf Haurissa; Hendry Y. Nanlohy
JURNAL ABDIMAS DINAMIS : JURNAL PENGABDIAN KEPADA MASYARAKAT Vol 1 No 2 (2020): ABDIMAS DINAMIS
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat USTJ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58839/jad.v1i2.764

Abstract

Untuk membantu pemerintah dalam memutus mata rantai pencebaran virus corona, Tim PKM USTJ melaksankan program pengabdian masyarakat untuk melaksanakan protokol pencegahan COVID-19 di lingkungan Gereja GKI Sion Padang Bulan dengan membuat tempat cuci tangan dan membersihkan lingkungan gereja sebagai solusi untuk mencegah penyebaran COVID-19 dengan tema “Bersama, Bersatu Melawan Covid-19 Kita Pasti Bisa yang dilaksanakan selama 2 bulan. Pelaksanaan Pengabdian juga melibatkan mahasiswa. Luaran dari pengabdian yang telah dihasilkan adalah wastafel pencuci tangan mechanical yang pengoprasiaannya tanpa sentuhan tangan melainkan dengan pijakan kaki yang dapat digunakan oleh Jemaat Gereja GKI Sion Padang Bulan. Wastafel pencuci tangan mechanical sangat membantu jemaat mencuci tangan sebelum dan sesudah beraktifitas disaat pemberlakuan new normal yang dilakukan oleh pemerintah dalam upaya memutus mata rantai penularan covid-19. Tim PKM juga mensosialisasi program pemerintah yaitu menjaga jarak, selalu menggunakan masker saat beraktifitas, menghindari menyentuh area wajah sebelum mencuci tangan dan menghindari kontak fisik secara langsung seperti berjabat tangan.
PENGARUH PENAMBAHAN ADJUSTER PADA KOMPOR BRIKET TERHADAP JARAK PEMBAKARAN DAN LAJU PERPINDAHAN PANAS KONDUKSI Haurissa, Jusuf; Riupassa, Helen; Nanlohy, Hendry; Suyatno, Suyatno
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1373

Abstract

The effective and efficient use of biomass briquettes is strongly influenced by the type of stove used and the way it is used. This study aims to design a briquette stove by adding an adjuster: the test fuel used honeycomb briquettes and forest fern charcoal. The heat transfer from burning honeycomb briquettes to a pot of water needs to be maintained so that the heat (temperature) remains constant during the combustion process. In the current use of briquettes, the distance between the briquette flame and the pot of water is unstable because the space is getting further away from the pool of cooking water. The combustion distance is getting farther because the bottom of the initial honeycomb briquettes burns out, causing the surface of the briquettes to decrease and move away from the surface of the water pot. Thus the heat given to the pool of water will reduce. The briquette stove needs to be added with an adjuster to overcome this problem. This adjuster serves to raise the honeycomb briquettes if the surface of the briquettes decreases. With the addition of an adjuster, it will be analyzed how much the heat transfer rate and the stability of the burning distance of the honeycomb briquettes will be. In this study, 2 test models will be used: a stove with an adjuster and a stove without an adjuster, using 14 holes in honeycomb briquettes made from forest ferns using starch (tapioca) adhesive. The distance between the surface of the briquettes and the pot of boiled water is 5 cm. The results showed that the briquette stove using an adjuster could maintain the stability of the combustion distance between the surface of the briquette and the pot of water being cooked with an average temperature t = 567.83 0C and conduction heat transfer q = 5285.699 Watt.
Co-Authors Alfons, Alfred Benjamin Andi Sanata Andika Prasetya Bambang Suhartawan Basri Katjo Bonefasius Bao Bosta Sihombing Calvin R. Rumansara Fairuddin, Fairuddin Harsanta, Bagus E. Haurissa, Jusuf Hendry Y. Nanlohy Herman Hi. Tjolleng Taba Herman Tjolleng Taba Hotnida Nainggolan I Made Rasta Ikhwansyah Isranuri Iriyanto, Santje M Iriyanto, Santje Magdalena Kenny H Marianingsih, susi Marthina Mini Marthina Mini Marthina Mini Marthina Mini Marthina Mini, Marthina Martina Mini Masaki Yamaguchi Masaki Yamaguchi Mebin Samuel Panithasan Muhammad Akhlis Rizza Muji Setiyo Nevada M.J. Nanulaitta Nurwijayanti Rachmat Subagyo Raehan, Muhammad Alif Ribut Jayanto Rolling Gasperzs Satworo Adiwidodo Selcuk Sarikoc Susi Marianingsih Suyatno Suyatno Suyatno Suyatno Syamsudin Usman T. Ahri Bahriun Takuya Tomidokoro THOMAS KBAREK Thomas Kbarek Timang, Rison Sando Trismawati Trismawati Trismawati Trismawati Trismawati, Trismawati Tugiman Tugiman Ulwan, Abdullah Usman, Syamsudin Walintukan, Akbar Vicky V Yamaguchi, Masaki