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All Journal LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Turbo : Jurnal Program Studi Teknik Mesin SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Fisika : Fisika Sains dan Aplikasinya Jurnal Lembaga Pengabdian Kepada Masyarakat Undana
Tobe, Adi Yermia
Program Studi Teknik Mesin, Fakultas Sains Dan Teknik Universitas Nusa Cendana
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Analisis Tinggi dan Temperatur Api pada Pembakaran Premixed Campuran Minyak Solar Murni dan Fame (Fatty Acid Methyl Ester) Defmit B.N. Riwu; Jack C. A. Pah; Adi Y. Tobe; Wagimin Wagimin
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 7 No 01 (2020): April 2020
Publisher : Jurusan Teknik Mesin, Fakultas Sains dan Teknik, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.1234/ljtmu.v7i01.3378

Abstract

Penelitian ini dilakukan dengan membakar campuran minyak solar murni dan minyak FAME (Fatty Acid Methyl Ester) dengan prosentase campuran solar murni (80%, 90%, dan 95%) dan minyak FAME (20%, 10%, dan 5%) secara premixed. Berdasarkan hasil penelitian didapatkan bahwa semakin besar prosentase minyak FAME yang ditambahkan maka tinggi api dan temperatur api menurun, meski penurunannya tidak terlalu signifikan. Pada prosentase minyak solar murni dan FAME (Solar 95% - FAME 5%) Pada debit udara 350 ml/min dengan equivalence ratio 1.571 pada prosentase minyak solar 95% - FAME 5%, 1.535 pada prosentase minyak solar 90% - FAME 10% dan 1.462 pada prosentase minyak solar 80% - FAME 20%. Hubungan prosentase minyak solar dan FAME terhadap temperatur pada dua titik pengambilan temperatur yaitu bagian ujung api dan bagian tengah dekat ujung burner. Terlihat bahwa semakin besar prosentase minyak FAME maka semakin kecil temperatur apinya.
Karakteristik Pembakaran Difusi Campuran Solar Murni dengan Minyak Kelapa Jack C.A. Pah; Defmit B.N. Riwu; Adi Y. Tobe; Suprianto Siagian
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 7 No 01 (2020): April 2020
Publisher : Jurusan Teknik Mesin, Fakultas Sains dan Teknik, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.1234/ljtmu.v7i01.3379

Abstract

This research was conducted to determine the effect of adding coconut oil to pure diesel oil on the characteristics of diesel oil steam diffusion combustion. The characteristics observed are flame height and fire temperature. The combustion process is carried out on a circular tube burner. The steam mass flow of fuel in this study is 0.0895 grams / second. From the results of the study the biggest results were obtained in the mixture of 90% diesel oil with 10% coconut oil, fire height of 94.51 mm and a temperature of 967˚C and the lowest yield was found in a mixture of 70% diesel oil and 30% coconut oil, namely temperature amounting to 796˚C and fire height of 68.85 mm. From this, it can be concluded that the greater the percentage of diesel oil added to the combustion process, the higher and the flame temperature will increase. This is due to the characteristics of different fuels, where diesel oil has a lower viscosity than coconut oil and has a heating value greater than coconut oil.
Pengaruh Penambahan Solar Murni terhadap Karakteristik Pembakaran Difusi Uap Minyak Kelapa Adi Tobe; Defmit B.N. Riwu; Jack Pah; Kyven G. Hoke Liba
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 7 No 02 (2020): Oktober 2020
Publisher : Jurusan Teknik Mesin, Fakultas Sains dan Teknik, Universitas Nusa Cendana

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

Abstract

Minyak kelapa merupakan minyak nabati yang ramah lingkungan dan sangat mudah didapatkan di Indonesia, selain itu minyak kelapa dapat digunakan sebagai energi alternatif. Penelitian ini dilakukan untuk mengetahui pengaruh penambahan solar murni terhadap karakteristik pembakaran difusi uap minyak kelapa. Metode yang digunakan dalam penelitian ini adalah metode eksperimen. Dari penelitian ini didapatkan bahwa pada campuran 90% minyak kelapa + 10% solar murni tinggi api hasil pembakaran 6,83 mm dengan suhu 328 ° C, sedangkan pada campuran minyak kelapa 80% + solar murni 20%, hasil pembakaran 12,86 mm dengan suhu 389 ° C dan pada variasi campuran minyak kelapa 70% + solar murni 30% menghasilkan hasil pembakaran 23,15 mm dengan suhu 423 ° C. Perbedaan ketinggian nyala api dan suhu disebabkan oleh perbedaan viskositas dan nilai kalor dari kedua oli tersebut. Oleh karena itu dari penelitian ini dapat disimpulkan bahwa setiap penambahan solar murni suhu dan ketinggian api akan meningkat
Waktu Gesek Terhadap Kekuatan Tarik Sambungan AA6061-Baja Karbon Pada Pengelasan Gesek Continuous Drive Jack C.A. Pah; Defmit B.N. Riwu; Dominggus Adoe; Adi Y. Tobe
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 8 No 02 (2021): Oktober 2021
Publisher : Jurusan Teknik Mesin, Fakultas Sains dan Teknik, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.1234/ljtmu.v8i02.5940

Abstract

The objective of this research was to get the effect of friction time on the tensile strength of the joining of aluminum alloy AA6061 and carbon steel, with continuous drive friction welding process. Variations of friction time of this research were 5 seconds, 7 seconds, 9 seconds, and 11 seconds. Other friction welding variables were friction pressure 24 MPa, forging pressure 79 MPa, forging time 60 seconds, and friction rotation speed 1600 rpm. The independent variable was the ultimate tensile strength of the welded joint. The results showed that the relationship between friction time and ultimate tensile strength is not linear, with the increase in friction time. The increasing of friction time, caused the ultimate tensile strength increase to a maximum value and then the ultimate tensile strength of the joint will decrease sharply. The greatest ultimate tensile strength is obtained at a friction time 9 seconds, with ultimate tensile strength 111.89 MPa
Analisis Pengaruh Variasi Tekanan Dan Dimensi Briket Sekam Padi Terhadap Temperatur Dan Lama Nyala Api Melvani E. D. Tana; Defmit B.N. Riwu; Adi Y. Tobe
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 8 No 02 (2021): Oktober 2021
Publisher : Jurusan Teknik Mesin, Fakultas Sains dan Teknik, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.1234/ljtmu.v8i02.5943

Abstract

This research was conducted to determine the effect of variations in pressure and dimensions of rice husk briquettes on the temperature and duration of the flame. The mashed husk charcoal is mixed with 50 ml of water, 160 grams of starch and 450 grams of rice husk charcoal, stirred until evenly distributed. The process of molding charcoal briquettes that have been mixed and then printed, uses molds with diameters of 1 in, 1.5 in and 2 in, with different briquette pressure variations, pressure variations using sizes 0.1 MPa, 0.2 MPa, 0, 3 MPa, 0.4 MPa. The briquettes are then dried in the sun for three days to dry. From the research, it was found that the variation of pressing pressure affects the characteristics of the flame and the dimensions of the burning of rice husk briquettes. The highest temperature was recorded at 749 0C at 1.5 In briquette size and the pressing pressure was 0.2 MPa. At this size, the longest flame is 18 minutes
UPAYA MENCIPTAKAN LINGKUNGAN YANG SEHAT MELALUI PEMBUATAN MCK BAGI WARGA KAMP PENGUNGSI TIMOR BARAT Kristomus Boimau; Rima Nindia Selan; Adi Yermia Tobe; Jack C. Pah
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 4, No 1 (2020): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (597.321 KB) | DOI: 10.31764/jpmb.v4i1.3387

Abstract

ABSTRAKKamp pengungsi Dilor Tuapukan adalah salah satu contoh kamp pengungsi di Timor Barat yang masih dihuni oleh pengungsi sejak tahun 1999.  Kamp pengungsi seluas ± 2,25 ha (150 m x 150 m) ini dihuni oleh 111 KK dengan jumlah jiwa sebanyak 275 orang. Seluruh KK tinggal di rumah darurat yang tidak layak huni sesuai standar rumah sehat dengan kondisi ALADIN (atap, lantai, dinding) seadanya yakni atap dari daun gewang, dinding dari bebak/pelepah dan lantai tanah. Selain itu, ketersediaan MCK pun sangat kurang, bahkan mayoritas KK (± 85%) di kamp ini tidak memilik MCK sendiri, sehingga mereka memanfaatkan kebun di sekitar kamp untuk buang air besar (BAB). Dari hasil pantauan di wilayah kamp pengungsi Dilor terlihat ada sebuah MCK permanen, 12 MCK darurat berdinding daun gewang tanpa closet. Saluran pembuangan air dari MCK pun macet sehingga air tergenang disepanjang saluran. Hal ini tentu menciptakan lingkungan yang tidak sehat. Tidak tersedianya MCK yang layak sesuai standar kesehatan disebabkan karena keterbatasan dana untuk membangun MCK serta ketidakpahaman warga akan pentingnya kesehatan lingkungan. Tujuan dari kegiatan ini adalah untuk mengatasi ketidaktersediaan MCK dengan membuatkan MCK umum bagi warga. Kegiatan ini dilaksanakan selama 2 bulan dan menghasilkan 2 unit MCK permanen dengan masing-masing MCK memiliki 3 kamar. Setelah MCK selesai dibuat dan digunakan, selanjutnya tim pelaksana melakukan monitoring ke lokasi setiap 2 minggu sekali untuk memantau aktifitas warga dalam menggunakan MCK. Hasilnya menunjukkan bahwa warga tidak buang air besar (BAB) sembarangan. Kata kunci: kamp pengungsi; lingkungan; MCK. ABSTRACTThe DilorTuapukan refugee camp, is one of the refugee camps in West Timor that has been inhabited by refugees since 1999. The area of this camp is approximately 2.25 hectares (150 m x 150 m).This refugee camp is inhabited by 111 families with a total of 275 people.The whole family lives at emergency houses. The houses are not suitable for habitation (viewed from the Healthy Home Standard).  The condition of the houses that they live in, especially in terms of ALADIN (roof, floor, walls) conditions is very unhealthy and very simple. The roof of the houses are made of Gewang Leaves, the walls are made of Bebak / Midrib and the floor are made of land only. In addition, the availability of facilities for bathing, washing clothes, and defecating (MCK) are very lacking. The majority of families (± 85%) in this camp do not have their own toilet. To carry out the MCK activities, they used the garden around the camp. For example, to defecate (BAB) is stiffened in the garden area. From the results of monitoring in the area of the Dilor refugee camp, it can be seen that there is a permanent toilet only, 12 emergency toilets with Gewang leaf walls without watercloset. The drainage channel from the toilets was jammed, so that the water was stagnant along the channel. This certainly creates an unhealthy environment. The unavailability of proper toilets according to health standards, are due to limited funds to build toilets, and residents' lack of understanding of the importance of environmental health. Therefore, to overcome the unavailability of toilets, the implementation team will make public toilets for residents. This activity was carried out for 2 months, and has succeeded build 2 permanent MCK units with each MCK having 3 rooms. Keywords: refugee camp; environment; MCK.
KKN TEMATIK DESA FATUSENE-KECAMATAN MIOMAFO TIMUR KABUPATEN TIMUR TENGAH UTARA Dominggus G.H. Adoe; Jack C.A. Pah; Adi Y. Tobe
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 4, No 2 (2021): April
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.566 KB) | DOI: 10.31764/jpmb.v4i2.3949

Abstract

ABSTRAKKegiatan pengabdian pada masyarakat melalui Program Kuliah Kerja Nyata bertujuan untuk meningkatkan laju geraknya pembangunan masyarakat dengan menumbuh kembangkan motivasi pada masyarakat Desa Fatusene. Adapun target yang diharapkan dapat tercapai, yaitu : kebutuhan air bersih bagi masyarakat dapat terpenuhi, pembuatan kebun percontohan bagi masyarakat, mencegah hewan ternak terkena penyakit, mengajak anak-anak dan pemuda untuk menabung sejak dini, serta membuka pemahaman kepada masyarakat desa untuk melihat peluang usaha sehingga mereka tidak hanya bekerja sebagai petani tetapi juga mengelola hasil tani mereka menjadi produk jadi melalui usaha kecil maupun menengah. Metode pelaksanaan kegiatan ini adalah sosialisasi dan pelatihan dengan melibatkan masyarakat Desa Fatusene secara langsung. Beberapa hasil yang dicapai dalam kegiatan ini adalah tersedianya air bersih, hewan ternak yang tidak terkena penyakit, kebun percontohan yang dapat diikuti oleh masyarakat, terutama anak-anak dan remaja pada masyarakat Desa Fatusene, yang mulai menabung dan tumbuhnya jiwa kewirausahaannya. Kata kunci: pengabdian masyarakat, KKN, pelatihan, sosialisasi ABSTRACTCommunity service activities through the Community Service Program aim to increase the pace of community development by fostering and developing motivation in the people of Fatusene Village. The targets are expected to be achieved, namely: the need for clean water for the community can be met, making demonstration gardens for the community, preventing livestock from getting sick, inviting children and youth to save from an early age, and opening understanding to the village community to see business opportunities. So they not only work as farmers but also manage their agricultural products into finished products through small and medium enterprises. The method of implementing this activity is socialization and training by directly involving the Fatusene Village community. Some of the results achieved in this activity are the availability of clean water, livestock that are not affected by disease, demonstration gardens that can be followed by the community, especially children and adolescents in the community of Fatusene Village, who are starting to save and grow an entrepreneurial spirit. Keywords: community service program, KKN, training, outreach
PENGARUH UKURAN TABUNG UDARA DENGAN TINGGI PIPA KELUARAN 7 METER TERHADAP EFISIENSI POMPA HIDRAM DOUBLE KATUP LIMBAH Robin Diyener Takain; Defmit B. N. Riwu; Adi Y. Tobe; Dominggus G. H. Adoe
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 6 No 1 (2021): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v6i1.2724

Abstract

AbstrakTujuan dari penelitian ini dilakukan untuk mengetahui pengaruh ukuran tabung udara terhadap efisiensi pompa hidram PVC double katup limbah. Pompa hidram yang digunakan dalam penelitian ini memiliki diameter pipa masukan 2 inchi dan diameter pipa keluaran ½ inchi. Variasi tinggi tabung udara yang dilakukan adalah 100 cm, 120 cm dan 140 cm. Sedangkan tinggi pipa keluaran yang dilakukan adalah 7 m. Hasil penelitian ini menunjukkan efisiensi tertinggi yang diperoleh terdapat pada tinggi tabung udara 140 cm dengan tinggi pipa keluaran 7 m yaitu 81,9 % dan efisiensi terendah yang diperoleh terdapat pada tinggi tabung udara 100 cm yaitu 70,24 %. Pernambahan tinggi ukuran tabung udara dapat meningkatkan efisiensi pompa hidram. Hal ini terjadi karena rongga udara yang besar menambah tekanan air melalui pipa keluaran.Kata kunci Pompa Hidram PVC Double Katup limbah; Tinggi Tabung Udara; Efisiensi AbstractTthe purpose of this study was carried out toknow the effect of air tube sizeon the efficiency of PVC hydram pumps double waste valve.The hydram pumpused in this study has a 2 inch diameter input pipe and½ inch diameter output pipe. The height variation of the air tube is carried out100 cm, 120 cm and 140 cm. While the height of the output pipe made is 7 m.The results of this study showed the highest efficiency obtained in the height of the air tube 140 cm with a high output pipe 7m that is 81,9% and the lowest efficiency obtained is in the height of the tubeair 100 cm is 70,24%. Increasing the height of the air tube size can increase the efficiency of the hydram pump. This happened because the large air cavity increases the water pressure through the outlet pipe.Key word :PVC hydram pump double waste valve; height of the air tub; efficiency
Studi Kinerja Teoritis Pengkondisian Udara Menggunakan R32, R290 Dan R410a Sengge, James Roland; Dwinanto, Matheus M.; Tobe, Adi Y.
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 9 No 01 (2022): April 2022
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v9i01.7890

Abstract

The use of more environmentally friendly refrigerants in air conditioning systems has become a central demand and issue in the future. This article presents the simulation results of the comparison of the use of R32 (difluoromethane), R290 (propane) and R410A (difluoromethane+pentafluoroethane) on the performance of air conditioning systems. The thermodynamic analysis of the system using the two refrigerants used the CoolTools version 1.0 software at several variations of the evaporation temperature, with the condensation temperature held constant. The important quantities analyzed are heat release in the condenser, compressor power, and coefficient of performance. The results of this study indicate that the performance of air conditioning using R290 is higher than the use of R32 and R410A while the lowest coefficient of performance is owned by air conditioning using R410A. In addition, R290 is more environmentally friendly than R32 and R410A, so the use of R290 is highly recommended
Karakteristik Pembakaran Premixed Campuran Bioetanol Dan Premium (Gasoline) Riwu, Defmit B.N.; Tobe, Adi Y.; Adoe, Dominggus G. H.; Pah, Jack C.A.; Baria, Metrisno
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 9 No 01 (2022): April 2022
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v9i01.8061

Abstract

Bioethanol is one of the renewable energies that can be used as fuel. Ethanol produced from palm sap can be used to mix fuel oil (BBM) into gasohol (energy mixed) which marks green fuels era begin. This research was conducted by burning a mixture of Bioethanol (105 ml, 120 ml, 135 ml, 143 ml) and Premium (45 ml, 30 ml, 15 ml, 7 ml), to determine the effect of adding Premium into bioethanol on temperature and flame color. The combustion process is carried out by premixed, in which a mixture of bioethanol and premium is heated to produce steam. This steam will be given a spark to produce combustion of the mixture. After the steam burns and produces a fire, then the air flow rate is regulated until the fire is blow-off. The results of the study indicate that, if the composition of bioethanol in the fuel is increasing, the flame looks bluer and the equivalence ratio value becomes smaller. In addition, the temperature reached at point 1 is higher than point 2. This indicates that point 1 is the final combustion zone, which is where the fuel has been burned completely
Co-Authors Baitanu, Rivanto Baria, Metrisno Defmit B.N. Riwu Dominggus Godlief Heryson Adoe Erich Maliwemu, Erich Gama, Ronaldo Luis Ishak Limbong Jack C. A. Pah Jack C. Pah Jack C.A. Pah Jack C.A. Pah Jack Pah Jahirwan Ut Jasron Jefri Semuel Bale Kristomus Boimau Kyven G. Hoke Liba M. Dwinanto, Matheus M. Mangesa, Daud P. Matheus M. Dwinanto Melvani E. D. Tana Nafie, Andri Nuban, Jondri K. A. Pah, Jack C. A Pah, Jack C.A. Pah, Jack Carol Adolf PUAY, FERDINAN Rima Nindia Selan Robin Diyener Takain Sengge, James Roland Sonbaifeto, Dodi Alfredo Suprianto Siagian Talo, Piter Verdy A. Koehuan Wagimin Wagimin Wenseslaus Bunganaen