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All Journal Transmisi Rekayasa Mesin Info-Teknik JOURNAL OF EARTH ENERGY ENGINEERING Dinamisia: Jurnal Pengabdian Kepada Masyarakat G-Tech : Jurnal Teknologi Terapan Jurnal Pembelajaran Pemberdayaan Masyarakat (JP2M) JTM Automotive Experiences RING Mechanical Engineering Book of Open Source
Ena Marlina
Universitas Islam Malang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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PENGARUH JARAK SEMPROT NOZZLE TERHADAP PUTARAN POROS TURBIN DAN DAYA LISTRIK YANGDIHASILKAN PADA PROTOTYPE TURBIN PELTON Mulyadi Mulyadi; Margianto Margianto; Ena Marlina
Jurnal Teknik Mesin Vol 6, No 02 (2016): Jurnal Teknik Mesin
Publisher : UNIVERSITAS ISLAM MALANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (547.526 KB)

Abstract

Pelton turbineis animpulseturbine, the turbineis driven by the kinetic energy ofthe water. Spray(jet) on thehigh-speed waterbucketandrunnerafterrunnermovesthe waterat low speed, which meansmost ofthe energyis notabsorbedbythe runner. The water pressurein and outof the bladeisatmosfir.Turbinpressurepeltonisthe best exampleof theimpulseturbine. Theturbineis operatedbyoneormorejets(nozzle) of waterinto thebucketat thecenteraround theparameterof therunner. Power comesfrom theforceof waterfromhigh-pressure impingementimpulseturbinebucketsso named turbin pelton. One of themost importantcomponents of pelton turbin is nozzle, the distancebetween thenozzleand the bladecanaffect the bladeturbinerotating speed. In addition, the distance between thenozzleof therunnerdeterminesthe point offallingwater, because thenozzlemusthavea proper distanceso thatturbine bladescan receivea goodimpulse. From the test results influence the distance the spray nozzle to the rotation runner and the electric power generated in the prototype turbine Pelton, with a distance of spray 50 mm, 60 mm, 70 mm valve opening is 30?, 60? and 90?, it can be concluded as follows: Acquisition rate of rotation runner Pelton turbine prototype that is highest at a distance of 50 mm spray nozzle when the valve opening 90 with a rotation rate of 428.67 rpm runner, generating electric power of 10.57 watts, with the fluid flow rate (Q) generated as much as 0.00082 m /s, while for the lowest round at a distance of 70 mm when the spray valve opening 30? with 381.00 rpm rotation speed, generating electrical power 9.84 Watt, the fluid flow rate (Q) generated as much as 0.00074 m/s. fluid flow velocity higher acquisition prices are at a distance of 50 mm semprotm nozzle when the valve opening is 13.93 m/s 90. With the mass flow rate of 0.82 m/s. In the case of fluid mass flow rate the greater the valve opening, the greater the mass flow rate of the fluid and the fluid flow generated. The highest result of the mass flow rate of fluid that is at a distance of 50 mm when the spray valve opening 90 obtain fluid mass flow rate of 0.82 kg/s and produce a flow rate (Q) as much as 0.00082 m/s.
PENGARUH PENAMBAHAN BROWNS GAS TERHADAP KINERJA MOTOR BENSIN YAMAHA VEGA ZR 115 CC Nurrosidin Nurrosidin; Abdul Wahab; Ena Marlina
Jurnal Teknik Mesin Vol 7, No 02 (2016): Jurnal Teknik Mesin
Publisher : UNIVERSITAS ISLAM MALANG

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Abstract

Brown's gas (HHO) is a mixture of H gas (Hydrogen) and O gas (Oxygen) in the ratio of 2:1 is generally produced from the electrolysis process. Electrolysis is the process of molecular breakdown HO (water) into Hand O the influence of electrical energy. HHO gas has a high energy when burned up to three times the energy of premium fuel per unit of weight and has excellent combustion properties that can be used to improve the performance of combustion and exhaust emissions from gasoline engines. research on HHO gas is already quite a lot. This paper is a study of experimental behavior for HHO effect on gasoline four-stroke engine twowheeler (motorcycle). HHO gas is injected into the combustion chamber through the intake manifold by varying the flow-rate of HHO by varying the revolution shaft engine. HHO injection varies at 0 ml/s, 1 ml/s, 2 ml / s, and 3 ml/s. Rotation of the motor also varies from 3000, 3500 rpm to 4200rpm performance. observation from this study is the engine performance (output power, sfc,), emissions (CO and HC). With the addition of HHO gas to gasoline motor can improve performance four-stroke enginePowerHHOgasincreaseson the addition of3ml/sby 27,6% with amotor rotationof 4000rpm, SFCdecreasedapproximately31.4% at 4000rpm. The addition ofHHOalsoimprove the quality ofthe exhaust gasof about20% COandHCcontentdecreases to27.6%.
PENGGUNAAN GENERATOR HHO TIPE DRY CELL UNTUK MEMPRODUKSI BROWNS GAS DENGAN KATALIS NaCl Hadi Mutakkim; Abdul Wahab; Ena Marlina
Jurnal Teknik Mesin Vol 8, No 01 (2017): Jurnal Teknik Mesin
Publisher : UNIVERSITAS ISLAM MALANG

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Abstract

Menurunnya produksi minyak mentah di Indonesia menjadi beban bagi bangsa Indonesia. Oleh karena, itu dibutuhkan energi alternatif atau suatu inovasi baru yang bertujuan untuk penghemat pemakaian bahan bakar minyak pada kendaraan. Salah satu alternatif tersebut adalh penggunaan bahan bakar hidrogen (H2). Untuk memperoleh gas hidrogen dapat dilakukan dengan cara memecah senyawa air (H2O) menjadi gas hidrogen hidrogen oksigen (HHO) atau browns gas yaitu melalui proses elektrolisis dengan bantuan arus listrik searah. Pada penelitian ini menggunakan generator HHO tipe dry cell dengan elektroda yang berupa plat stainless steel 304 dan menggunakan katalis NaCl (Natrium Klorida) dengan variasi prosentase 4; 5; dan 6 % yang masing masing dilarutkan pada aquades sebanyak 500 ml. Karakteristik yang diketahui meliputi konsumsi daya yang digunakan oleh generator, laju produksi browns gas, dan efisiensi generator HHO. Hasil penelitian dan pengujian generator tipe dry cell ini diperoleh generator terbaik dengan prosentase katalis 6 % diperoleh data hasil pengujian dengan daya yang digunakan sebesar 66 Watt, laju produksi browns gas yang dihasilkan sebanyak 0,0034 l/s dan efisiensi generator HHO sebesar 33,59 %.
Jabung Village Dairy Farmers: Milk Education Center: Peternak Sapi Perah Desa Jabung: Sentra Wahana Eduwisata Susu Ifit Novita Sari; Otto Fajarianto; Citra Kurniawan; Tri Candra Wulandari; Ena Marlina
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 1 (2023): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v7i1.12217

Abstract

Jabung village has a fairly high number of dairy farmers compared to other livelihoods, such as employees, farmers and laborers. This is a great potential for the village to become a special tourism village on dairy farmer edutourism. Currently, the village government is taking inventory of various potential villages that are developed to become tourist villages. The inventory is carried out in stages in line with the activities of the Regrestrasi Awal Sosial Ekonomi (regrosek) specifically for the economy in 2022. The purpose of this service activity is based on the village government's desire to empower a number of dairy farmers to become learning centers for other farmers outside Jabung Village. Preparation is carried out by fixing various supports for the maintenance of dairy cattle. Starting from feeding to milking. Stimulation in the form of animal feed chopping tools, electric cow milking, and the creation of a website following e-learning about dairy cattle
Analisis Sifat Mekanik Fe2O3 Undoping dan Doping Graphene sebagai Material Penguat pada Paduan Al-Si Cepi Yazirin; Ena Marlina
G-Tech: Jurnal Teknologi Terapan Vol 7 No 3 (2023): G-Tech, Vol. 7 No. 3 Juli 2023
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v7i3.2550

Abstract

Aluminium memiliki berbagai aplikasi komersial karena memiliki ketahanan korosi yang baik, ringan, sifat mekanik yang baik, dan  kemudahan fabrikasi. Paduan Aluminium-Silikon memiliki kemampuan cor dan las yang baik, konduktivitas termal yang baik, dan ketahanan korosi yang sangat baik. Semakin berkembangnya zaman, maka dunia industri saat ini dituntut untuk meningkatkan kualitas hasil  produksinya. Tujuan dari penelitian ini adalah untuk mengetahui sifat mekanik paduan Al-Si setelah ditambahkan material lain. Metode penguatan pada paduan Al-Si menggunakan metode stir casting. Hasilnya  Penambahan Fe2O3 undoping dan doping graphene tidak dapat meningkatkan kekuatan tarik dari paduan Al-Si dan sebaliknya penambahan Fe2O3 undoping dan doping graphene menurunkan kekuatan tarik dari paduan Al-Si. Penambahan material Fe2O3 undoping graphene dan Fe2O3 doping graphene pada paduan Al-Si memiliki pengaruh terhadap kekerasan paduan Al-Si yaitu terjadi peningkatan nilai kekerasan dari Al-Si raw 108,83 HV setelah ditambah material Fe2O3 undoping graphene menjadi 111 HV dan menjadi 134,83 HV setelah ditambah material Fe2O3 doping graphene.
Characterization of Voltage Generation Obtained from Water Droplets on a Taro Leaf (Colocasia esculenta L) Surface Ena Marlina; Akhmad Faruq Alhikami; Metty Trisna Negara; Sekar Rahima Sahwahita; Mochammad Basjir
Journal of Earth Energy Engineering Vol. 12 No. 2 (2023)
Publisher : Universitas Islam Riau (UIR) Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jeee.2023.12916

Abstract

Voltage generation was obtained using a water droplet characterization on a taro (Colocasia esculenta L) leaf surface. This method relies on the superhydrophobic effect from the contact angle between the water droplet and the taro leaf’s surface allowing electron jumping and voltage generation. Water droplets were dropped on the top of taro leaf surface equipped with aluminum foil underneath as an electrode. The voltage was measured at various slope angles of 20°, 40° and 60° in a real-time basis. A digital camera was used to capture the droplet movement and characterization. It is found that the taro leaf has a surface morphology of nano-sized pointed pillars which created a superhydrophobic field. The energy generation was primarily obtained from the electron jump which was caused by the surface tension of the nano-stalagmite structure assisted by the minerals contained in the taro leaf surface. The results reported that the smaller the droplet radius (the smaller the droplet surface area), the greater the droplet surface tension and the greater the voltage generation. Furthermore, the highest voltage generation was obtained 321.2 mV at 20°-degree angle of slopes.
PENGARUH PIEZOELECTRIC TERHADAP MICROBIAL FUEL CELL DENGAN SUBSTRAT LIMBAH CAIR TAHU DAN NASI BASI Sumartono, Agus Tri; Marlina, Ena; Margianto, Margianto
RING ME Vol 2 No 1 (2022)
Publisher : Universitas Islam Malang

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Abstract

Kebutuhan energi saat ini sebagian besar memanfaatkan energi fosil, untuk mengurangi  penggunaan energi fosil salah satu teknologi penghasil energi alternatif sebagai pengganti energi fosil adalah teknologi Microbial Fuel Cell. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan piezoelectric terhadap kinerja Microbial Fuel Cell dengan menggunakan metode eksperimental sehingga nanti dilakukan pengamatan secara langsung terhadap reaktor Microbial Fuel Cell. Substrat yang digunakan dalam penelitian ini menggunakan limbah cair tahu dan nasi basi yang didiamkan selama 7 hari sebelum digunakan. Pengambilan data dilakukan dengan 2 variasi yaitu menggunakan piezoelectric dan tanpa piezoelectric. Dalam penelitian ini yang akan diuji tegangan yang dihasilkan reaktor MFC, selanjutnya hasil tegangan tersebut digunakan untuk mencari parameter hitung lain seperti rapat arus, efisiensi sel dan daya sel. Hasil penelitian menunjukkan bahwa penggunaan piezoelectric pada reaktor Microbial Fuel Cell meningkatkan produksi tegangan, dimana tegangan maksimum yang dihasilkan reaktor dengan menggunakan piezoelectric sebesar 132,52 mV pada jam ke-72. Tegangan yang dihasilkan mempengaruhi parameter hitung yang lain, sehingga pada jam yang sama arus masimum yang dihasilkan  sebesar 0,133 mA, Efisiensi sel masimum sebesar 8,95 % dan Daya sel maksimum sebesar 11276,20 mW. Kata Kunci: Energi Alternatif ; Microbial Fuel Cell ; Piezoelectric ; Limbah Cair Tahu dan Nasi Basi
PENGARUH PENCAMPURAN TERPENTIN dengan CPO (CRUDE PALM OIL) terhadap PEMBAKARAN DOUBLE DROPLET Khalim, M. Nur; Marlina, Ena; Robbi, Nur
RING ME Vol 2 No 1 (2022)
Publisher : Universitas Islam Malang

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Abstract

ABSTRACTCrude Palm Oil (CPO) is a vegetable oil that has the potential to be developed into biodiesel, but if applied directly CPO can damage the engine due to its high viscosity. Turpentine is one of the bio additives that can be used to lower the viscosity of vegetable oils. In this study, CPO was mixed with turpentine to reflect its viscosity. The method used in this study is  true experimental research using double droplet combustion. In this study, there were three samples used, namely 100% CPO (pure CPO), 90% CPO (90% CPO + 10% turpentine), and 85% CPO (85% CPO + 15% turpentine). From this study, the highest temperature at 85% CPO was obtained at 674.1 oC.  The fastest burning rate at CPO is 90% with a burning rate of 0 – 0.966 s on chanel 1 and 0 – 0.966 s on chanel 2.  Meanwhile, the highest height in CPO is 85% with 21.41 mm and the highest fire width in CPO is 85% at 6.1 mm. from the research data, it can be concluded that the addition of terpenti is proven to reduce and improve the combustion quality of CPO droplets. Keywords : Biodiesel, CPO, Bio additive, Turpentine ABSTRAKCrude Palm Oil (CPO) merupakan minyak nabati yang sangat potensial untuk dikembangkan menjadi biodiesel, tapi jika diterapkan secara langsung  CPO  dapat merusak mesin karena viskositasnya yang tinggi. Terpentin merupakan salah satu bio aditif yang dapat digunakan menurunkan viskositas dari minyak nabati. Dalam penelitian ini CPO dicampur dengan terpentin untuk menerunkan viskositasnya. Metode yang digunakan dalam penelitian ini adalah eksperimental nyata (true experimental research) dengan menggunakan pembakaran double droplet. Dalam penilitian ini terdapat tiga sampel yang digunakan yaitu CPO 100% (CPO murni), CPO 90% (90% CPO + 10% terpentin), dan CPO 85% (85% CPO + 15% terpentin). Dari penelitian ini diperoleh temperatur tertinggi pada CPO 85% sebesar 674,1 oC. Burning rate tercepat pada CPO 90% dengan laju pembakaran selama 0 – 0,966 s pada chanel 1 dan 0 – 0,966 s pada chanel 2. Sedangkan tinggi tertinggi pada CPO 85% dengan 21,41 mm dan lebar api tertinggi pada CPO 85% denag 6,1 mm. dari data penelitian tersebut dapat disimpulkan bahwa penambahan terpenti terbukti dapat menurunkan dan memperbaiki kualitas pembakaran droplet CPO. Kata Kunci: Biodiesel, CPO, Bio aditif, Terpentin 
PENGARUH PENAMBAHAN MINYAK TERPENTIN terhadap KARAKTERISTIK PEMBAKARAN DROPLET MINYAK KELAPA sebagai BAHAN BAKAR BIODIESEL Silvia, Linda; Marlina, Ena; Robbi, Nur
RING ME Vol 2 No 1 (2022)
Publisher : Universitas Islam Malang

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Abstract

ABSTRAKBiodieselminyak nabati yang ramah lingkungan dapat menggantikan permintaan bahan bakar diesel yang terus meningkat. Salah satu minyak nabati yang dapat digunakan sebagai bahan bakar alternatif adalah minyak kelapa (CCO). Titik nyala pada CCO lebih rendah daripada solar dan nilai kalor biodiesel CCO setara dengan nilai kalor solar. Viskositas minyak nabati yang tinggi mengakibatkan proses penguapan lama dan kerusakan pada mesin. Pencampuran CCO dan minyak terpentin adalah kombinasi bahan bakar dengan viskositas rendah dengan nilai kalor yang sebanding dengan solar. Beberapa campuran yang diteliti yaitu, CCO 100%, CCO 90% dan CCO 85%. Metode penelitian ini yaitu pengujian tetesan double droplet di dalam ruang bakar. Hasil penelitian menunjukkan penambahan minyak terpentin pada CCO mempengaruhi karakteristik pembakaran yang meliputi temperatur yang meningkat, laju pembakaran yang lebih cepat dan memperbesar dimensi api yaitu tinggi api dan lebar api. Terdapat microexplosion yang mengakibatkan pembakaran lebih sempurna karena pada saat proses pembakaran droplet dapat habis terbakar.  Kata Kunci: Biodiesel; double droplet; CCO; minyak terpentin ABSTRACTEco-friendly vegetable oil biodiesel can replace the increasing demand for diesel fuel. One of the vegetable oils that can be used as an alternative fuel is coconut oil (CCO). The flash point of CCO is lower than that of diesel and the calorific value of CCO biodiesel is equivalent to the calorific value of diesel. Viscosity high vegetable oil results in a long evaporation process and damage to the engine. Blending CCO and turpentine oil is a combination of low-viscosity fuels with calorific value comparable to that of diesel. Some of the mixtures studied were 100% CCO, 90% CCO and 85% CCO. The method of this research is the double droplet test in the combustion chamber. The results showed that the addition of turpentine oil to CCO affected the combustion characteristics which included an increased temperature, a faster combustion rate and an increase in the dimensions of the fire, namely flame height and flame width. There is a microexplosion which results in more complete combustion because during the combustion process the droplets can burn out. Keywords: Biodiesel; double droplet; CCO; turpentine oil
Optimization of Iron Oxide (Fe2O3) Addition Parameters on the Physical Properties of Al-Si Alloys as an Advanced Material Innovation Yazirin, Cepi; Marlina, Ena; Tsamroh, Dewi Izzatus
TRANSMISI Vol. 20 No. 2 (2024): September (2024)
Publisher : Universitas Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jtmt.v20i2.13908

Abstract

Aluminum-silicon alloys are widely used in the industrial world, one of which is because they have high wear resistance. The aim of this research is to determine the physical and mechanical properties of the Al-Si alloy after strengthening by mixing reinforcing materials. The research method uses Taguchi optimization and analysis of the physical properties of the Al-Si alloy test results. The results showed that the highest hardness value was obtained in the 7th experiment, namely with a rotation variation of 2000 rpm, temperature of 6000C, and holding time of 60 seconds. This result is in line with the results of the tensile strength test, where the highest tensile strength was also obtained in the 7th experiment. This result is supported by the results of other researchers, which show that the higher the rotation in the casting results in higher hardness. The results of the microphotographs show that all alloy materials have an even distribution of grains, the grain size appears small, and the dendrites in the raw Al-Si alloy appear small compared to other materials. The macro photo results show that all alloy materials have fractures that appear brittle, as evidenced by the fact that these fractures provide light reflection.
Co-Authors Abd. Wahab Abdul Karim Abdul Wahab Aghitsnillah, Nuro Qolbi Agung Rahmat Hidayatullah Akhmad Faruq Alhikami Al Farrosi, Faisholul Umam Alfiah Ekariani Amaria R., Ellen Annas Nuur Fadhillahtur Rochman Aruhi, Nasarudin As'at Nursalim Ma'as Hamzah Ashari, Apri Assauri, Sufyan Basjir, Mochammad Citra Kurniawan Dewi Izzatus Tsamroh Eka Wahyu Sri Wilujeng Ekariani, Alfiah Ellen Amaria R. Fahmi Husaini Mastur Faisholul Umam Al Farrosi Farni Mudakir Febriana Sari, Wiwik Dyah Fikki Bisma Setia Effendi Firman Hidayat Firman Hidayat Gabriel Jeremy Gotama Galang Jalu Tanaya Gotama, Gabriel Jeremy Hadi Mutakkim Hidayatullah, Agung Rahmat Ichiyanagi, Mitsuhisa Ifit Novita Sari Khalim, M. Nur Khovadli Ocvando Lilis Yuliati Linda Silvia, Linda Lulut Ernin Maharani M. Syamsul Arif Ma'as Hamzah, As'at Nursalim Machfudz, Masyuri Maharani, Lulut Ernin Margianto Margianto Mastur, Fahmi Husaini Metty Trisna Negara Mitsuhisa Ichiyanagi Mohammad Ulinnuha Mudakir, Farni Mulyadi Mulyadi Naily Zulfa Nanda Ayu Pawestri Nasarudin Aruhi Novan Yoga Prasetya Nur Muhammad Rosyid Nur Robbi Nuro Qolbi Aghitsnillah Nurrosidin Nurrosidin Ocvando, Khovadli Otto Fajarianto Pawestri, Nanda Ayu Prasetyono, Bayu Priyagung Hartono Priyagung, Priyagung Rachman, Rifqi Mahaputra Rahayu Kurniati, Rini Rochman, Annas Nuur Fadhillahtur Rosyid, Nur Muhammad Rully Dyah Purwati Sekar Rahima Sahwahita Setia Effendi, Fikki Bisma Siti Asmaniyah Mardiyani Siti Nurlaila Siti Nurlaila, Siti Slamet Wahyudi Sri Wilujeng, Eka Wahyu Suhatta, Jefri Sumartono, Agus Tri Susanto, Taufiq Heri Takashi Suzuki Takashi Suzuki, Takashi Tanaya, Galang Jalu Taufik, M.Taufik Tri Candra Wulandari Trismawati, Trismawati Wahab, Abd. Walid Najibullah Willyanto Anggono Willyanto Anggono Wiwik Dyah Febriana Sari Yazirin, Cepi Zulfa, Naily