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All Journal International Journal of Applied Power Engineering (IJAPE) INTEK: Jurnal Penelitian Jurnal JEETech Jurnal Teknik Mesin Sinergi International Journal of Innovation in Mechanical Engineering and Advanced Materials
Lewi Lewi
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Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengembangan Prototipe Kandang Ayam Cerdas Menggunakan Solar Panel Berbasis Internet of Things Firman Hamzah; A. Chaerul Aksha Pratama; Raehanah A. Yusri; Lewi Lewi; Abdul Kadir Muhammad; Imran Habriansyah; Akhmad Taufik
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.3697

Abstract

Peternakan adalah kegiatan mengembangbiakkan dan membudidayakan hewan ternak untuk mendapatkan manfaat dan hasil dari kegiatan tersebut. Sebagian besar peternak di Indonesia masih menggunakan cara tradisional/ konvensional dalam beternak. Bagi peternak berskala besar hal tersebut tentunya menjadi tugas yang sulit untuk menjaga hewan ternak sepanjang waktu. Pemberian pakan, minum, desinfektan, dan pembersih kotoran masih dilakukan secara manual sehingga menyita banyak tenaga dari para peternak. Penelitian ini bertujuan untuk memodifikasi sistem kandang ayam cerdas sebelumnya agar dapat memberikan pakan, minum, disinfektan, dan pembersih kotoran secara otomatis sehingga peternak tidak perlu datang ke kandang secara langsung. Sistem tersebut memerlukan komponen-komponen yang menggunakan sumber daya listrik yang besar sehingga penggunaan Solar Panel (Tenaga Surya) sebagai sumber daya listrik dapat menghemat penggunaan listrik pada alat kontrol yang dibuat. Hasil penelitian menunjukkan bahwa penggunaan Solar System sebagai sumber daya listrik utama pada kandang ayam cerdas yang dibuat berhasil diaplikasikan untuk menyalakan serta menjalankan semua aktivitas yang telah dijadwalkan pada alat. Mekanisme pembersih kotoran kandang yang telah dibuat dapat bekerja sesuai dengan jadwal yang telah ditentukan. Pemberian pakan, minum, disinfektan, dan pembersih kotoran dapat dipantau melalui aplikasi monitoring.
Design and performance test of series underwater Savonius rotors with horizontal axis Buana, Chandra; Tangko, Jumadi; Djalal, Muhammad Ruswandi; Lewi, Lewi; Ardaniah, Ardaniah; Mukhtaram, Nurrafii Al
International Journal of Applied Power Engineering (IJAPE) Vol 12, No 4: December 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v12.i4.pp399-407

Abstract

The energy of river water flow or irrigation canals can be utilized by using a horizontal axis Savonius turbine, which converts low-speed river flow into electrical power with good design. The design of this turbine needs to pay attention to several parameters, namely, the deflector angle, the number of blades, the diameter and thickness of the blades, and the diameter and thickness of the end plates. However, the problem usually encountered is imperfect turbine construction due to the large drag force that occurs so that the power generated is low. Based on this background, it is proposed to manufacture and test the performance of a series Savonius underwater rotors with a horizontal axis. The research results found that the generator voltage without load was 25.6 V when the turbine only rotated at 47.2 rpm, whereas when under load, the average power produced was 8.5 watts with an average turbine speed of 31 rpm. The highest efficiency value on the rotor is 86.73%, with a torque value of 3.36 at a turbine speed of 29.9 rpm. This indicates that the tool can generate large torque at low speeds.
Rancang Bangun Body Kursi Dental Unit Ka’ka , Simon; Lewi, Lewi; Bara', Yamar; Abadi Palinggi, Elvys
Jurnal Teknik Mesin Sinergi Vol 22 No 1 (2024): April 2024
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v22i1.4968

Abstract

Pemeriksaan gigi dan mulut bagi para pasien dengan tindakan tertentu seperti eksodonsi, scaling, dan restorasi dapat dilakukan menggunakan kursi dental ini. Akan tetapi, prinsip ergonomik sering ditinggalkan dikarenakan keterbatasan dari alat dan kenyamanan merupakan faktor utama yang ditinggalkan, baik operator maupun pasien akan mengalami ketidaknyamanan ketika dihadapkan dengan pemakaian kursi atau bangku konvensional yang selama ini masih digunakan oleh kebanyakan operator dalam pelaksanaan bakti sosial. Penelitian ini dilakukan untuk merancang bangun konstruksi Body Kursi Dental Unit agar dokter dan pasien tidak mengalami keluhan seperti yang sudah dijelaskan di atas. Sehubungan dengan itu, penelitian ini diawali dengan mempelajari struktur kursi dental unit, menghitung kecepatan naik turun kursi dan maju mundur sandaran punggung, Kemudian menghitung kekuatan sambungan pada body kursi dental unit. Adapun waktu pelaksanaan perancangan yang dimulai dari bulan Maret-September 2022 bertempat di Bengkel Mekanik dan Poliklinik Politeknik Negeri Ujung Pandang. Berdasarkan hasil penelitian dan pembahasan dapat disimpulkan bahwa Body kursi dental unit ini mampu bergerak naik turun dengan beban pasien maksimum 150 kg.
Rancang Bangun Prototipe Solar Home System Menggunakan Baterai Lithium Sebagai Penyimpan Energi Marhatang, Marhatang; Yusuf Yunus, Muhammad; Sonong, Sonong; Lewi, Lewi; Tandioga, Remigius; Ruswandi Djalal, Muhammad
Jurnal JEETech Vol. 5 No. 1 (2024): Nomor 1 May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v5i1.5106

Abstract

Utilizing the Solar Home System requires a battery as an energy storage medium produced from photovoltaic modules. Today's batteries are lead-carbon Valve Regulated Lead Acid (VRLA) batteries. This type of battery has a 90-95% round-trip efficiency and a deep discharge (DOD) level of 80%. This type of battery is not environmentally friendly because it produces lead acid. Therefore, the development of batteries in the SHS system from lithium battery technology is carried out. Besides being environmentally friendly, its round-trip efficiency is quite good compared to lead-carbon, which is 92-96% with a DOD level of 100%. In this study, it is proposed to apply lithium batteries on a lab scale so that they can assist students in developing scientific fields, especially lithium battery-based energy storage. In addition, this research will describe the process of making and prototyping lithium batteries in solar practicum learning media. From the test results obtained, a laboratory-scale Solar Home System prototype for solar power system practicum using Lithium batteries as Energy Storage. The average effect of charging the battery is 21.09 watts. With the highest battery charging voltage set at 14.08 Vdc. And the highest charging current rate is 1.37 A, with the highest battery charging efficiency rate of 12%. The characteristics of the Lithium battery itself, the DoD shown is also good when the capacity read on the battery meter is 0%. The battery can still supply 15 watts of load for 20 minutes
Pengembangan Sistem Monitoring Rubber Tyred Gantry Crane Berbasis Long Range di PT Pelindo Terminal Petikemas New Makassar Terminal 2 AKbar, Muhammad Fajri; Heryanto, Heryanto; Lewi, Lewi; Mukhtar, Mukhtar
Jurnal Teknik Mesin Sinergi Vol 22 No 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v22i2.5400

Abstract

Penelitian ini mengembangkan sistem monitoring jarak jauh untuk Rubber Tyred Gantry (RTG) Crane di PT Pelindo Terminal Petikemas New Makassar Terminal 2, dengan mengganti komunikasi dari WiFi ke LoRa guna mengatasi blindspot jaringan yang menghambat pemantauan optimal. Sistem baru juga dilengkapi dengan sensor RFID dan Lidar untuk memantau jumlah dan kondisi kontainer secara real-time di lapangan penumpukan. Data dari PLC RTG ditarik menggunakan program Python dan ditampilkan melalui website monitoring yang dapat diakses dari kantor. Proses penelitian melibatkan pengumpulan data, studi literatur, perancangan sistem elektronik, pemrograman, pengujian sensor, instalasi perangkat pada E-Room, hingga implementasi sistem monitoring. Hasil pengujian menunjukkan sistem berhasil menampilkan kondisi kerusakan RTG serta informasi kontainer secara realtime, dengan delay data selama 3 detik melalui modul LoRa. Teknologi ini memungkinkan staf dan engineer untuk memantau kerusakan maupun operasional RTG tanpa harus turun langsung ke lapangan, sehingga meningkatkan efisiensi dan keamanan proses bongkar muat peti kemas. Crane Monitoring System (CMS) berbasis website terbukti efektif dan responsif dalam mendukung kelancaran operasional terminal petikemas.
Pengembangan Sistem Kontrol Penyangga Kaki pada Dental Unit Habriansyah, Imran; Kadir Muhammad, Abdul; Paisal, Paisal; Mukhtar, Mukhtar; Lewi, Lewi; Abdal, Abdal; Nasrullah, Nasrullah
Jurnal Teknik Mesin Sinergi Vol 23 No 1 (2025): April 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i1.5402

Abstract

Dental unit adalah suatu alat yang dipakai oleh dokter gigi untuk melakukan pemeriksaan serta perawatan gigi dan mulut (pengeboran, penambalan, dan pembersihan). Pada perangkat dental unit terdapat bagian kursi dental unit yang digunakan pasien dalam proses perawatannya. Pengembangan sistem kontrol penyangga kaki pada dental unit dilatar belakangi dental unit yang ada pada saat ini belum memiliki kemampuan untuk menyesuaikan posisi ergonomi pada kursi dan pengontrolan pada penyangga kaki secara otomatis maka diharapkan setelah pengembangan yang telah dilakukan, kenyamanan dan keamanan pada dental unit semakin meningkat. Dental unit tipe mobile terdiri dari beberapa bagian seperti lengan, meja, sistem roda, body, sistem kelistrikan, dan sistem kontrol. Pada penelitian ini penulis secara khusus telah mengembangkan rancangan sistem kontrol sebelumya dengan mengaplikasikan Mikrokontroller Arduino ATMega sebagai pusat kendali yang mampu mengontrol semua gerakan dental chair dan instrumen pada dental unit. Berdasarkan hasil penelitian, diketahui bahwa alat kendali berupa foot controller dan panel kontrol yang telah dibuat mampu mengendalikan gerakan naik, turun, rebah, dan tegak dental chair serta mengontrol instrumen dental unit yang meliputi dental light, sistem penyaluran air, LCD, handpiece.
Pengaruh Kelengkungan Sudu Terhadap Kinerja Turbin Angin Savonius Jamal, Jamal; Yunus, A. M. Shiddiq; Lewi, Lewi
INTEK: Jurnal Penelitian Vol 6 No 2 (2019): October 2019
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (515.19 KB) | DOI: 10.31963/intek.v6i2.1578

Abstract

Savonius wind turbine is one of the wind turbines that is more widely used for low energy needs, with more energy needs, this turbine type is very feasible to be developed. This research aims to improve the performance of Savonius wind turbines with variations in turbine blade curvature and variations in wind speed. The research method is a laboratory experiment on the fan test, the blade curvature test variation is 1R; 1.5R and 2R, another variation is the wind speed which are 4.0; 5.5; 7.0 and 8.5 m/s. The experiement results shows that the greater the wind speed, the input power, air mass flow velocity, power output, and efficiency will be even greater; the greater the load force on the turbine shaft, the torque on the turbine shaft will also be greater; the relationship of force loads to power output and turbine efficiency is to construct a parabolic curve; for the same wind speed, the 2R turbine has the lowest rotation, power output and efficiency compared to the 1R and 1.5R turbines; at the same wind speed the 1R turbine produces a higher rotation but requires lower torque than the 1.5R turbine; at low wind speeds (4 m / s) the 1.5R turbine has better efficiency than the 1R turbine, whereas at the high wind speed (8.5 m/s) the 1R turbine has a better efficiency than the 1.5R turbine; The maximum efficiency is obtained at 89.56% in the 1R curvature turbine with a wind speed of 8.5 m / s.
PLANNING STUDY OF HYBRID POWER PLANT SOLAR PV-DIESEL GENERATOR ON KODINGARE ISLAND, SINJAI REGENCY Yunus, Muhammad Yusuf; Lewi, Lewi; Rijal, Andi Saiful; Huda, Nur; Ikram, Ahmad
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 5, No 2 (2023)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v5i2.23245

Abstract

Kodingare Island is located in Pulau Sembilan District, Sinjai Regency, one of nine islands. Currently, most people still rely on conventional energy from diesel power plants. The reason is that this island does not yet receive an electricity supply from the electricity grid due to the geographical limitations of the archipelago. It is known that the most potential renewable energy source on Kodingare Island is solar energy, with a potential for solar radiation reaching 5.86 kWh/m2/day. This research aims to analyze an innovation that combines PV and solar, where PV acts as the main electricity generator, while solar functions as a backup and additional energy source. The method used in this research uses simulation methods, layout modeling, and financial analysis using HOMER Pro simulation software to determine the potential and performance of hybrid power plants and SketchUp Pro software to produce three-dimensional layouts and economic and feasibility values obtained through financial analysis. Technical aspects include producing an electrical energy system of 37,029 Wh/year, consisting of PV of 32,981 Wh/year and solar of 4,048 Wh/year with energy consumption of 33,850 Wh/year. The required fuel consumption is 2,086 L/year, with excess electricity of 931 kWh/year and renewable energy penetration of 89.1%. From an economic perspective, planning this hybrid power system requires an investment of 258.290.000 IDR, O&M costs of 19.350.600 IDR, and the cost of energy value of 1,352/kWh IDR. In contrast, from the feasibility aspect of planning a hybrid electric power system, it is said to be feasible because it produces a Net Present Value of 9,870,151 IDR, is more significant than zero, the Profitability Index is 1.03 greater than one, the Internal Rate of Return is 8.90% greater than the credit interest rate of 8.43% and the Payback Period required for return of capital is nine years nine months.
Co-Authors A. Chaerul Aksha Pratama A. M. Shiddiq Yunus A.M Shiddiq Yunus Abadi Palinggi, Elvys Abdal, Abdal Abdul Rahman Akbar, Muhammad Fajri Akhmad Taufik Akmal Setiawan Andareas Pangkung Ardaniah, Ardaniah Aris Saputra Bara', Yamar Buana, Chandra Fikri Fatahillah Firdaus Firdaus Firman Hamzah Fitriani Fitriani Habriansyah, Imran Heryanto Heryanto Ibnu Nur Hidayat Ikram, Ahmad Imran Habriansyah Jamal Jamal Jamal Jamal Kadir Muhammad, Abdul Lifia Nur Ismayani Marhatang Marhatang Muh Yusuf Yunus Muhammad Abdul Kadir Muhammad Irwan Muhammad Ruswandi Djalal Muhammad Yusuf Yunus Mukhtar Mukhtar Mukhtaram, Nurrafii Al Nasrullah Nasrullah Paniman Palengai Peri Pitriadi Peyembonan, Yerin Raehanah A. Yusri Remigius Tandioga Rijal, Andi Saiful Simon Ka’ka Simon Ka’ka Sonong Syamsiar, Syamsiar Tangko, Jumadi Tri Randi Uetama Yerin Peyembonan Yusuf Yunus, Muhammad Zein Rahimul Iman Zulfiadi Zulfiadi Zulfiadi, Zulfiadi