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Biogas user perceptions of biogas development in Urutsewu Village, Ampel District, Boyolali Regency Solikah, Anisa Rahmawati; Rifo Nur Laksana Restu; Indriani, Vivi
Jurnal Peternakan Integratif Vol. 13 No. 01 (2025): Jurnal Peternakan Integratif
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpi.v13i01.20760

Biogas is an innovation that is already known among livestock farmers. Urutsewu Village uses biogas in an effort to meet energy needs derived from cow dung, chicken dung, tofu liquid waste, and kitchen waste. The purpose of this study was to analyze the perceptions of biogas users towards the installation, economic impact, environmental impact, and social impact of biogas installation in Urutsewu Village. This research was a descriptive research with data collection conducted through direct interviews with biogas users. The source of information data was obtained from 48 respondents consisting of households that own biogas digesters and households that use non-owners of biogas digesters. The results of the study showed that 67% of biogas users knew about biogas before using it and 33% after using biogas. Respondents tended to say that biogas technology is easy to implement, easy and simple maintenance. The perception of biogas users regarding environmental impacts is that biogas technology can reduce pollution, reduce sources of disease and improve environmental quality. Biogas technology can relatively save fuel costs and is cheaper than other fuels but is not sufficient as cooking fuel. The community agrees to process waste into biogas and supports the government in biogas processing

Biogas user perceptions of biogas development in Urutsewu Village, Ampel District, Boyolali Regency Solikah, Anisa Rahmawati; Rifo Nur Laksana Restu; Indriani, Vivi
Jurnal Peternakan Integratif Vol. 13 No. 01 (2025): Jurnal Peternakan Integratif
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpi.v13i01.20760

Biogas is an innovation that is already known among livestock farmers. Urutsewu Village uses biogas in an effort to meet energy needs derived from cow dung, chicken dung, tofu liquid waste, and kitchen waste. The purpose of this study was to analyze the perceptions of biogas users towards the installation, economic impact, environmental impact, and social impact of biogas installation in Urutsewu Village. This research was a descriptive research with data collection conducted through direct interviews with biogas users. The source of information data was obtained from 48 respondents consisting of households that own biogas digesters and households that use non-owners of biogas digesters. The results of the study showed that 67% of biogas users knew about biogas before using it and 33% after using biogas. Respondents tended to say that biogas technology is easy to implement, easy and simple maintenance. The perception of biogas users regarding environmental impacts is that biogas technology can reduce pollution, reduce sources of disease and improve environmental quality. Biogas technology can relatively save fuel costs and is cheaper than other fuels but is not sufficient as cooking fuel. The community agrees to process waste into biogas and supports the government in biogas processing

3D Model Autocad Of The Piston Displacer Cup For A Gamma Stirling Engine Using The API Method Rahmat, Rahmat; Dean Anggara Putra; Rifo Nurlaksana Restu; Jefri Imron; Marhaendra Natawibawa; Hery Sumardiyanto; Khairil Munawar; Thomas Junaedi
Elkom: Jurnal Elektronika dan Komputer Vol. 18 No. 1 (2025): Juli : Jurnal Elektronika dan Komputer
Publisher : STEKOM PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/129bk828

When producing a perfect product, design process namely 2D modeling and 3D drawing, are closely related. The purpose of this study is to design a 3D model of a gun mastering machine product as a fan drive using CAD applications. The method of this study is decision data on API production (analytical product inspection). Measurement of sterling machine degradation using CPK (deviation) received results of -0.97, -0.22, 0.86, 0.11, 0.11 between zero and what indicates this specification. On average, the results of the stirling fluid fluorescent agent measurement are red numbers indicating that the survey dimensions are absent, especially from the basic dimensions of point 4, with samples 2, 3, and 5 exceeding the specified tolerance limits.

Project control using S Curve in provision of pedestal crane at PT. Medco E&P Natuna - West Belut Platform Rahmat, Rahmat; Putra, Dean Anggara; Restu, Rifo Nurlaksana; Imron, Jefri; Natawibawa, Marhaendra; Sumardiyanto, Hery; Munawar, Khairil; Junaedi, Thomas
Priviet Social Sciences Journal Vol. 5 No. 8 (2025): August 2025
Publisher : Privietlab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55942/pssj.v5i8.489

In the implementation of a project, three main aspects are indicators of the success of the project: cost, schedule, and quality. If the cost and time of project implementation are in accordance with the planning and quality requirements, then the project can be said to be successful. Time plays a significant role in construction management projects, where time is also a management function. With good and proper time control, obstacles to delays in project implementation can be avoided as much as possible. The purpose of this study was to determine the cause of the achievement or deviation of work between the realization in the field and the planned time schedule for the procurement of a pedestal crane unit for a new platform in the operational area of block-B-Natuna.

Rancang Bangun Mesin Penggulung Lilitan Kawat Transformator Otomatis Berbasis Arduino Uno Dean Anggara Putra; Rahmat Rahmat; Rifo Nurlaksana Restu; Jefri Imron; Marhaendra Natawibawa; Hery Sumardiyanto
Jurnal Manajemen Informatika & Teknologi Vol. 5 No. 1 (2025): Mei : Jurnal Manajemen Informatika & Teknologi
Publisher : LPPM Sekolah Tinggi Ilmu Ekonomi - Studi Ekonomi Modern

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/zwj24c08

Transformator merupakan komponen penting dalam sistem kelistrikan, namun proses pembuatan transformator secara manual masih memiliki keterbatasan dari sisi efisiensi dan akurasi jumlah lilitan. Penelitian ini merancang dan membangun mesin penggulung lilitan kawat transformator otomatis berbasis Arduino Uno dengan kontrol motor stepper melalui driver L298N, serta antarmuka LCD 16x2 untuk menampilkan jumlah lilitan. Sistem ini dilengkapi push button sebagai penentu jumlah lilitan dan potensiometer untuk mengatur kecepatan putaran motor. Hasil pengujian menunjukkan bahwa mesin ini mampu bekerja dengan tingkat presisi tinggi, dengan selisih jumlah lilitan hanya 1–3 lilitan pada setiap pengulangan dan perbedaan kecepatan motor stepper sebesar 2–3 RPM. Dengan demikian, mesin ini dapat meningkatkan efisiensi produksi transformator serta mengurangi potensi kesalahan manual. Penelitian selanjutnya disarankan untuk menambahkan mekanisme penggerak kawat otomatis agar distribusi lilitan lebih merata.

Kaji Experimental AC Residensial Inverter Untuk Menjadi Solusi AC Hemat Energi Natawibawa, Marhaendra; Rahmat, Rahmat; Imron, Jefri; Putra, Dean Anggara; Restu, Rifo Nurlaksana
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v10i8.61120

Penggunaan Unit AC sudah puluhan tahun digunakan dan semakin banyak dimanfaatkan di Indonesia untuk mensiasati kondisi udara yang panas dengan kelembaban relatif tinggi untuk mendapatkan kenyamanan udara. Yang jadi pertanyaan terlepas dari merk unit AC, teknologi AC Inverter yang banyak ditawarkan pramuniaga di berbagai tempat termasuk pasar modern sebagai AC hemat energi sehingga juga makin banyak dibeli dan digunakan terutama di kota-kota apakah memang memberikan dampak operasional yang hemat ? Hasil suatu pengujian lapangan dengan pengukuran sesaat menggunakan alat ukur berupa manifold gauge dan tang amper terhadap AC Inverter berkapasitas 1 PK faktanya menunjukkan kerja amper yang bahkan lebih tinggi dari amper nominal yang dituliskan pada nameplate-nya. Hal ini menunjukkan bahwa penggunaan AC hemat energi tidak selalu sejalan dengan sebutannya tapi masih dipengaruhi oleh faktor-faktor lainnya.

Project control using S Curve in provision of pedestal crane at PT. Medco E&P Natuna - West Belut Platform Rahmat Rahmat; Dean Anggara Putra; Rifo Nurlaksana Restu; Jefri Imron; Marhaendra Natawibawa; Hery Sumardiyanto; Khairil Munawar; Thomas Junaedi
Priviet Social Sciences Journal Vol. 5 No. 8 (2025): August 2025
Publisher : Privietlab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55942/pssj.v5i8.489

In the implementation of a project, three main aspects are indicators of the success of the project: cost, schedule, and quality. If the cost and time of project implementation are in accordance with the planning and quality requirements, then the project can be said to be successful. Time plays a significant role in construction management projects, where time is also a management function. With good and proper time control, obstacles to delays in project implementation can be avoided as much as possible. The purpose of this study was to determine the cause of the achievement or deviation of work between the realization in the field and the planned time schedule for the procurement of a pedestal crane unit for a new platform in the operational area of block-B-Natuna.

RANCANG BANGUN MESIN AUTO BAGGING BOTOL OLI UNTUK MENINGKATKAN EFISIENSI PENGEMASAN DI PT. KPI Listyantomo Budhi Prastiwi; Nugroho, Oktavianus Ardhian; Rahmat; Jefri Imron; Rifo Nur Laksana Restu; Dean Anggara Putra
Jurnal Ekselenta - Jurnal Ilmiah Fakultas Teknik Vol. 2 No. 2 (2026): Jurnal Ekselenta - Jurnal Ilmiah Fakultas Teknik
Publisher : Jurnal Ekselenta - Jurnal Ilmiah Fakultas Teknik

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

PT. KPI adalah sebuah perusahaan yang bergerak di bidang produksi plastik. Salah satu proses produksi uang ada di PT. KPI adalah proses pengemasan botol oli, akan tetapi proses ini di PT. KPI masih dilakukan secara manual. Hal ini mengakibatkan waktu proses yang relatif lama, sehingga menimbulkan ketidakkonsistenan hasil pengemasan, hal lain seperti tingginya ketergantungan kepada operator berpotensi menurunkan produktivitas dan efisiensi produksi saat terjadi peningkatan permintaan. Pada penelitian ini bertujuan untuk merancang mesin auto bagging botol oli guna mengotomatisasi proses pengemasan, sehingga dapat meningkatkan efisiensi kerja serta meminimalkan keterlibatan operator. Dalam penelitian ini telah dilakukan proses perancangan teknik yang mencakup identifikasi kebutuhan, pembuatan konsep, pembuatan desain 3D, pemilihan komponen, dan analisis perhitungan teknik (beban kerja, tekanan dan daya pneumatik, kekuatan rangka, perancangan poros, serta daya motor). Hasil dari penelitian ini adalah menghasilkan sebuah rancangan sistem pengemasan otomatis berbasis conveyor yang digunakan sebagai media pemindah botol, sistem ini dilengkapi oleh sensor sebagai pendeteksi jumlah botol, serta double air cylinder pneumatic yang berfungsi mengelompokkan dan mendorong botol ke dalam kantong plastik secara otomatis

Comparison of prototype designs of wavy solar roof tiles and flat solar roof tiles for BIPV applications Dean Anggara Putra; Rahmat Rahmat; Rifo Nurlaksana Restu; Jefri Imron; Marhaendra Natawibawa; Hery Sumardiyanto
Journal of Engineering and High Technology Vol. 1 No. 1 (2025): November
Publisher : Privietlab

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

This study compares the design efficiencies of two types of solar roof tile prototypes—flat and curved—in converting solar energy into electrical energy. Both types of solar tiles were tested under similar environmental conditions, including the light intensity, temperature, and roof tilt angle. The key parameters analyzed included output power, energy conversion efficiency, and performance stability over a defined period. The experimental results indicate that the flat solar roof tile exhibits a slightly higher conversion efficiency under optimal irradiation conditions. However, the curved solar roof tile demonstrated better performance in capturing light at varying incident angles, particularly during the morning and late afternoon, owing to its curved shape, which enables more uniform light absorption throughout the day. The study concludes that the selection of a solar roof tile type should be tailored to geographical conditions and specific user needs, as each design offers distinct advantages in terms of efficiency and installation flexibility.

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