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All Journal JREC (Journal of Electrical and Electronics) JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Jurnal Teknovasi : Jurnal Teknik dan Inovasi Mesin Otomotif, Komputer, Industri dan Elektronika JTTM: Jurnal Terapan Teknik Mesin Jurnal Pengabdian Kepada Masyarakat IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Jurnal Ilmiah Teknik Informatika & Elektro (JITEK)
Indra Hermawan
Universitas Medan Area
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Public Health Social Sciences Veterinary Other

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RANCANG BANGUN KETEL UAP PADA RUMAH SAKIT DENGAN KAPASITAS 400 TEMPAT TIDUR Edy Syahputra; Riky Wardhana; Indra Hermawan
Jurnal Teknovasi : Jurnal Teknik dan Inovasi Vol 3, No 1 (2016): Teknovasi April 2016
Publisher : LPPM Politeknik LP3I Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55445/teknovasi.v3i1.78

Abstract

Ketel merupakan suatu bejana yang bertekanan tertutup yang diberikan kalor untuk menaikkan temperatur air hingga menjadi uap. Uap pemanas digunakan untuk sistem pembangkit daya, proses produksi, rumah sakit dan sebagainya. Salah satu pendukung rumah sakit yang peranannya cukup penting adalah ketel uap, dimana penggunaan ketel uap bertujuan untuk meningkatkan pelayanan di rumah sakit. Uap yang dihasilkan berupa uap jenuh dimanfaatkan untuk keperluan laundry dan dapur. Ketel uap mendapat suplai kalor dari pembakaran bahan bakar. Tujuan dari penelitian adalah merancang sebuah ketel uap pipa api untuk kebutuhan uap rumah sakit dengan kapasitas 400 tempat tidur. Perencanaan dilakukan untuk menghitung kebutuhan uap untuk tiap – tiap unit pengguna, perhitungan kapasitas serta tekanan kerja ketel uap yang akan digunakan. Dilakukan juga analisa pembakaran bahan bakar serta perhitungan ukuran–ukuran utama ketel. Berdasarkan hasil peneltian maka dapat disimpulkan jenis ketel uap adalah ketel uap pipa api dengan kapasitas 22265 kg/jam, tekanan uap 7 bar, temperatur uap 164,65oC dan effisiensi 80%. Jenis bahan bakar yang digunakan solar dengan konsumsi 151,14 kg/jam, LHV 43.870,68 kJ/kg, HHV 46.453,08 kJ/kg, kebutuhan udara pembakaran 2.557,29 kg udara/jam, produksi gas asap 2.707,36 kg/jam dan kelembaban gas asap 9,978%. Lorong api (ruang bakar) yang digunakan berdiameter dalam 1.010 mm, diameter luar 1.038 mm, tebal dinding 14 mm dan panjang 3.950 mm. Pipa api yang digunakan ukuran 2 in, No. skedul 40, diameter luar 60,3 mm, diamater dalam 52,5 mm, tebal 309 mm, panjang 3.950 mm, jumlah 67 buah dan bahan adalah Baja Karbon Seambless (Seambless carbon steel) A53, A106. Ukuran drum ketel, diamter dalam 1.830 mm, diameter luar 1.850 mm, tebal 10 mm, panjang 4.250 mm dan bahan baja karbon SA 515-65. Cerobong asap, diameter 440 mm, tinggi 12.190 mm.
ANALISIS KOMPOSISI KOMPOSIT POLIPROPILEN/KARBON AKTIF TERHADAP KEKUATAN BENDING UNTUK APLIKASI PLAT DWIKUTUP FUEL CELL Iswandi Iswandi; Muhammad Idris; Indra Hermawan; Yopan Rahmad Aldori; Muhammad Irwanto
Jurnal Teknovasi : Jurnal Teknik dan Inovasi Vol 9, No 1 (2022): TEKNOVASI APRIL 2022
Publisher : LPPM Politeknik LP3I Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55445/teknovasi.v9i1.661

Abstract

Carbon-based material is one of the main filler materials for the manufacture of polymer composite bipolar plates for fuel cell applications. Some variation materials filler based carbon used on manufacture bipolar plate white high cost.  Determine of low cost filler materials is one of special issue for manufacture bipolar plate. Activated carbon is a alternative for suitable filler material base carbon at polymer composite and easy to find in Indonesia. This study investigates the effect of activated carbon composition in polymer composites on bending strength with a composition of 10, 20, 30, 40 (percent by weight) activated carbon (AC) with a polypropylene (PP) matrix. The sample has fabricated used hot press mouding with mix process at 220o­­­ C temperatures with 320 Psi pressure in 20 minutes. The bending test results with the standard three point bending test ASTM D790-03, The best value was found at a composition of 10% by weight of activated carbon of 26.9 MPa. This achievement has been obtained the Department of Energy, United State Of America (DOE USA) standard is 25 Mpa. This condition due to the polymer's composition of 10% KA to 90% PP, which makes it easier for the polymer to yield higher bonding and hence boost bending strength.
PENGARUH MODEL PRAKTEK KERJA INDUSTRI (BLOCK WEEK RELEASE DAN BLOCK MONTH RELEASE ) TERHADAP KOMPETENSI MEMBUBUT SISWA SEKOLAH MENENGAH KEJURUAN (STUDI KASUS: SMK N 2 MEDAN) Edy Syahputra; Syamsun Nahri; Indra Hermawan
Jurnal Teknovasi : Jurnal Teknik dan Inovasi Vol 3, No 2 (2016): Teknovasi Oktober 2016
Publisher : LPPM Politeknik LP3I Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55445/teknovasi.v3i2.66

Abstract

Kegiatan Praktek kerja industri (prakerin) yang dilaksanakan diharapkan mampu meningkatkan kompetensi siswa, ternyata sebahagian dari nilai mata Diklat kejuruan siswa yang telah melakukan prakerin tetap rendah terutama nilai mata Diklat kompetensi membubut. Untuk mengatasi hambatan-hambatan tersebut, dalam pengelolaan pendidikan dan pengajaran dapat dibuat berbagai kebijaksanaan, antara lain melaksanakan Prakerin dengan model block week release atau model block month release. Tujuan dari penelitian ini secara umum adalah mengetahui Pengaruh Model Praktek Kerja Industri (Block Week Release Dan Block Month Release) Terhadap Kompetensi Membubut Siswa SMK. Sedangkan tujuan khususnya adalah mengetahui keunggulan Prakerin model block week release dalam kompetensi membubut dibandingkan dengan model block month release. Metode penelitian ini adalah quasi eksperimen dengan rancangan faktorial 2 x 2 dan teknik analisis data menggunakan ANAVA. Tes perbedaan antar sel digunakan dengan menggunakan uji Tuckey. Hasil analisis data mengungkapkan bahwa siswa yang melakukan Prakerin dengan model block month release memperoleh kompetensi membubut yang lebih tinggi daripada model block week release yaitu Fhitung = 5,32 > Ftabel = 4,08. Siswa yang memiliki bakat teknik tinggi memperoleh kompetensi membubut yang lebih tinggi dibandingkan dengan siswa yang memiliki bakat teknik rendah yaitu Fhitung = 27,44 > Ftabel = 4,08. Selanjutnya ada interaksi antara model Prakerin dengan bakat teknik dalam mempengaruhi kompetensi membubut siswa, hal ini ditunjukkan dengan nilai Fhitung = 8,59 > Ftabel = 4,08. Berdasarkan hasil penelitian disimpulkan bahwa kompetensi membubut siswa kelas III SMK Negeri 2 Medan yang mengikuti model Prakerin block month release lebih unggul dibandingkan dengan model block week release. Siswa yang memiliki bakat teknik rendah lebih sesuai digunakan model block month release, sedangkan bagi siswa yang memiliki bakat teknik tinggi dapat menggunakan model Prakerin block week release maupun block month release.
Optimalisasi Sistem Teknologi Hybrid Pada Rancangan PV-Grid-Baterai Untuk Kebutuhan Skala Rumah Tangga Syah Rinal Efendi; Arya Chandra Buana Lubis; Habib Satria; Indra Hermawan
JREC (Journal of Electrical and Electronics) Vol 10 No 1 (2022): JREC (Journal of Electrical and Electronics)
Publisher : Program Studi Teknik Elektro Fakultas Teknik Universitas Islam 45 Bekasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/jrec.v10i1.3160

Abstract

The use of electricity that has covered every area of ​​the earth is a valid fact. This makes electricity a primary need that must be continuously provided to meet the needs of the community. Based on these known facts, as much as 50% of this electricity user is in the form of a household scale. Therefore, a research was conducted on the analysis of the technology system conversion in the PV-grid-battery design at a household scale. This study aims to determine the level of technology conversion in the pv-grid-battery design at a household scale so that electric customers can utilize solar panel technology more optimally and well. The method used in this activity is to use a direct observation and data collection system. Based on the results obtained, it can be concluded that the use of solar panels with a capacity of 120 Wp x 2 can help in backing up loads on a household scale. The household load power which is the parameter in this research activity is 450 VA (based on the power of the household kWhmeter).
Analisisi Unjuk Mesin Genset Kerja dengan Bahan Bakar Kombinasi Biogas dan LPG Tino Hermanto; Muhammad Idris; Indra Hermawan; Akhiruddin Akhiruddin
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 3 (2022): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v1i3.30

Abstract

Energy has a very important role in supporting sustainable development because increasing development growth results in an increase in the need for fuel. In the performance of the generator engine, there are several important parameters in data collection such as effective power, torque, specific fuel consumption, and thermal efficiency. In this research, several types of fuels such as LPG and biogas are used, which are expected to be used as alternative fuels that are more environmentally friendly. This research was carried out experimentally on a 4-stroke generator engine which has made changes to the oil-fueled carburetor to use gas fuel so that it can be used using LPG or biogas fuel and added additional components to the fuel inlet line such as a flow meter so that it can be used as fuel. varying the amount of fuel that enters the combustion chamber. In addition, this study also compares the effect of LPG fuel and a mixture of biogas with LPG on the performance of the resulting engine. The best overall test results were obtained using LPG fuel with an increase in Ne: 27.31%, Torque: 0.05%, SFC: 0.34%, and Thermal Efficiency: 4.09% compared to using a combination of Biogas and LPG fuel.
Analisis PLTS Sebagai Sumber Daya Sistem Pakan Ikan Otomatis Muhammad Idris; Indra Hermawan; Iswandi Iswandi; Felix Darwin Jaya Waruwu
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 3 (2022): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v1i3.35

Abstract

The purpose of this study was to determine the angle of inclination of the 10 WP solar panel so that the maximum amount of sunlight that falls on the surface area of the solar cell, analyze the performance of the solar cell, calculate the duration of charging the battery using a 10 WP solar panel. The method used is an experiment by recording every 10 minutes the output current and voltage of a 10 WP solar panel and battery, the current and voltage entering the battery and recording the intensity of sunlight using a solar meter. The overall results, based on theory and experiment, are that the angle of inclination of the solar panel is 10 WP so that the maximum amount of sunlight that falls on the surface area of the solar cell is at an angle of 9.3620 at 12.00 WIB facing south where the instantaneous intensity of sunlight hitting the solar panel at is 1049 W/m2, the performance of the solar cell is obtained by an average output current of solar panels 0.1295 A, the average output voltage of solar panels is 14.3162 V, the average output power of solar panels is 1.8798 W, the average the power that hits the solar panel is 59.3811 W, and the average panel efficiency is 3.1707%, the duration of charging the battery using a 10 WP solar panel is approximately 29 hours 8 minutes so that the battery is fully charged or approximately 2 days 5 hours 8 minutes.  
Pengaruh Variasi Fluida Pendingin Terhadap Laju Pendinginan Engine Yamaha Nmax Ade Wahyu Nugroho; Muhammad Idris; Indra Hermawan; Iswandi Iswandi
Jurnal Ilmiah Teknik Informatika & Elektro (JITEK) Vol 1, No 2 (2022): Jurnal Ilmiah Teknik Informatika & Elektro (JITEK)
Publisher : Jurnal Ilmiah Teknik Informatika & Elektro (JITEK)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jitek.v1i2.1473

Abstract

Radiator is a cooling system using fluid as a heat exchanger. How the radiator works by channeling the heat released by the motor engine is then absorbed by the radiator coolant fluid. The radiator device consists of a coolant inlet and engine outlet, a cooling fan mounted in front or behind the radiator, and coolant. Coolant in the radiator has a very important role in dissipating engine heat to the environment. In this study, I will analyze the different types of coolant variations, namely water, prestone antifreeze, Seiken, premix coolant DCK, and yamacoolant. on the cooling rate and radiator effectiveness using rotation variations of 1600, 3000,5000 rpm and measurement times of 1, 5, and 10 minutes on the Yamaha Nmax engine. The results of the research that have been carried out are the average heat transfer rate and the highest radiator effectiveness occur in the Yamacoolant type cooling fluid of 1.992kW and 0.726, the second highest occurs in the Prestone cooling fluid where the heat transfer rate value is 1.918kW and the radiator effectiveness is 0.652, then followed by Seiken where the heat transfer rate is 1.901kW and the radiator effectiveness is 0.634, then followed by DCK the heat transfer rate is 1.702kW and the radiator effectiveness is 0.592 and the smallest is experienced by mineral water where the heat transfer rate is 1.542kW and the radiator effectiveness is 0.501.
Water flow simulation in a pelton turbine bucket with variable bucket dimensions using computational fluid dynamic Muhammad Idris; Weriono Weriono; M Dalil; Indra Hermawan; Joko Joko; Achmad Jusuf Zulfikar; M.Y. Yuhazri
JTTM : Jurnal Terapan Teknik Mesin Vol 4 No 2 (2023): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v4i2.633

Abstract

Today, especially among industrialized and developing nations, the usage of renewable energy sources is growing in popularity as a means of supplying energy needs. One of the renewable energy sources that is now being heavily exploited in Indonesia is the potential of water that may be used as a source of electrical energy by establishing a hydroelectric power plant (PLTA). One of the turbines that is frequently used in hydropower plants as a part that may transform water's kinetic energy into mechanical energy is the Pelton turbine. There is not a lot of literature on the design of Pelton turbine buckets. In order to determine the most ideal bucket dimensions that can be used with Pelton turbines, this study presents the conceptual and experimental components of the design and analysis of Pelton turbines based on bucket variations. AutoCAD was used to model the bucket and Pelton turbine, and ANSYS Fluent was used to perform the simulation so that results could be analyzed later. By comparing the simulated data of the blade variants 1 and 2, the ideal blade dimension variation is identified by the blade simulation of variant 1. The blade variation 2 with average torque of 5.859 Nm, average angular velocity of 40.822 rad/s, and average power of 242,970 watts is the most ideal blade. With an average torque of 4,735 Nm, an average corner speed of 40,404 rad/s, and an average power of 196,794 W, the blade 3 model has lower values
Co-Authors Achmad Jusuf Zulfikar Ade Wahyu Nugroho Agnita Yolanda Akhiruddin Akhiruddin amirsyam nasution Anggih Prasetyo Wibisono Arya Chandra Buana Lubis Darianto Darianto Dian Noviandri Edy Syahputra Fahmi Sulaiman Felix Darwin Jaya Waruwu Habib Satria Ibrahim Ibrahim Ibrahim, Husin Iswandi idris Iswandi Iswandi Joko Joko M. Dalil M. Yusuf R Siahaan M.Y. Yuhazri Muhammad Idris Muhammad Irwanto Mulia Mulia Riky Wardhana SUSI YANTI Syah Rinal Efendi Syamsun Nahri Tino Hermanto Uun Novalia Harahap Weriono Wikrama Jaya Sitepu Yopan Rahmad Aldori