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All Journal Jurnal Edukasi Elektro KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Scientific Journal of Mechanical Engineering Kinematika Jurnal Abdi Masyarakat Indonesia Journal of Mechanical Design and Testing (JMDT) AMMA : Jurnal Pengabdian Masyarakat Journal of Sciencce Technology and Visual Culture
Arirohman, Ilham Dwi
Institut Teknologi Sumatera
Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health

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Comparative Analysis of Taper and Taperless Blade Design for Ocean Wind Turbines in Ciheras Coastline, West Java Madi, Madi; Tuswan, Tuswan; Arirohman, Ilham Dwi; Ismail, Abdi
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 1 (2021): February
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v18i1.32486

Abstract

The blade is the most critical part of turbine design because it is used to convert kinetic to mechanical energy. In general, the blade types used for ocean wind turbines are taper and taperless blades, like those operated at Ciheras Coastline. Previous research has been analyzed the type of airfoil used in designing taper blades for ocean wind turbines using NACA 4412, which was selected as the optimal foil configuration at sea wind speeds of 12 m/s. In this study, the comparison of taper and taperless blade designs using NACA 4412 at a wind speed of 12 m/s is analyzed. The comparative study with previous research has been carried out and resulted in the same graphical patterns and performance results. In this study, the focus is on investigating the performance coefficient of power, mechanical power, and electrical power. The final result shows that taper blade designs are highly recommended for use in ocean wind turbines compared to taperless blades. In general, the performance produced by taper blades is more significant than taperless blades at relatively high wind speeds. The maximum performance coefficient of power, mechanical power, and electrical power generated by the taper blades in sequent are 0.47, 1535 watts, and 786 watts, while the taperless blades have 0.44, 1437 watts, and 736 watts.
Perilaku Aliran Stratified Ditinjau dari Karakteristik Visual dan Tebal Film Cairan pada Pipa Horizontal Ilham Dwi Arirohman; Akhmad Zidni Hudaya; D Deendarlianto; I Indarto
Journal of Mechanical Design and Testing Vol 1, No 2 (2019): Articles
Publisher : Departemen Teknik Mesin dan Industri, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2535.509 KB) | DOI: 10.22146/jmdt.52810

Abstract

Perilaku aliran stratified searah horizontal diteliti secara eksperimental dengan menggunakan metode parallel wire dan visual. Eksperimen dilakukan pada pipa akrilik berdiameter 26 mm dan panjang 9,5 m. Beberapa sub pola aliran stratified yang telah dilaporkan oleh peneliti-peneliti sebelumnya dapat teramati dengan melakukan variasi kecepatan superfisial udara (JG) dari 4 – 20  m/s dan kecepatan superfisial air (JL) dari 0,01 – 0,1 m/s. Ketebalan film cairan diukur dengan menggunakan sensor parallel wire, sementara kecepatan gelombang dihitung berdasarkan waktu delay yang diperoleh dari teknik cross correlation. Dari hasil penelitian disimpulkan bahwa ketebalan rerata film cairan menurun seiring meningkatnya JG, sementara kecepatan gelombang secara umum meningkat dengan meningkatnya JG dan JL.
Pemanfaatan Panel Surya sebagai Penerangan Jalan Umum (PJU) di Kampung Wisata Agrowidya, Rajabasa Jaya, Lampung Ilham Dwi Arirohman; Putty Yunesti; Rihardian Maulana Wicaksono; Al Barra Harahap; Afit Miranto; Devy Arysandi; Yulianti Fatmawati; Rahmat Ramadhan Wahab
Jurnal Abdi Masyarakat Indonesia Vol 1 No 2 (2021): JAMSI - November 2021
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.043 KB) | DOI: 10.54082/jamsi.131

Abstract

Kampung Agrowidya adalah salah satu kampung percontohan untuk wisata agro berbasis pertanian dan perikanan. Kampung Agrowidya yang terletak di Rajabasa Jaya memiliki sistem bertanam hidroponik dan budidaya ikan tawar pada kolam terpal. Namun, kondisi pencahayaan Kampung Agrowidya khususnya pada malam hari masih sangat minim. Berdasarkan fakta ini dan hasil audiensi dengan masyarakat, maka dilakukan upaya pemenuhan kebutuhan pencahayaan jalan umum di Kampung Agrowidya dengan memanfaatkan tenaga surya. Tahapan kegiatan dimulai dengan pengukuran dan analisis tingkat iluminansi dan dimensi jalan. Hasil analisis menunjukkan bahwa kondisi pencahayaan di jalan utama Kampung Agrowidya masih berada di bawah batas yang direkomendasikan SNI 7391:2008. Dilanjutkan pemodelan menggunakan DIALux dengan tiga jenis lampu LED Philips BRP130, BRP052, dan BRP042. Hasil opsi pemodelan yang paling sesuai dan memenuhi SNI 7391:2008 adalah lampu LED Philips BRP130 dengan tinggi tiang 5 meter dan sudut kemiringan 15o dengan menggunakan suplai listrik dari solar panel 210 Wp dan media penyimpanan energi 140 Ah. Penyuluhan tentang penenarangan jalan umum tenaga surya dilakukan untuk membentuk kader masyarakat yang mampu memanfaatkan energi terbarukan khususnya energi surya. Hasil kegiatan pengabdian pada masyarakat ini memberikan hasil berupa instalasi penerangan jalan umum tenaga surya dan peningkatan pemahaman masyarakat Kampung Agrowidya tentang manfaat penerangan jalan umum tenaga surya.
Produksi dan Manajemen Energi Biogas dari Kotoran Sapi sebagai Pengganti LPG di Kampung Totokaton, Lampung Tengah Khoirun Naimah; M. Rizky Zen; Ilham Arirohman; Achmad Gus Fahmi; Kiki Yuli Handayani; Muhammad Khanafi; Fahmi Sapta Hadi; Apriansyah Julio; Hotdimas Simanjuntak; Siti Muslimah
Jurnal Abdi Masyarakat Indonesia Vol 2 No 6 (2022): JAMSI - November 2022
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54082/jamsi.562

Abstract

Kampung Totokaton merupakan salah satu dari 9 Kampung yang berada di wilayah kecamatan Punggur, kabupaten Lampung Tengah, Provinsi Lampung yang termasuk dalam wilayah menengah kebawah yang sulit mendapatkan akses bahan bakar LPG. Kampung Totokaton mempunyai potensi biomassa yaitu limbah kotoran ternak sapi yang cukup banyak yang dapat dimanfaatkan sebagai sumber energi bahan bakar biogas. Limbah kotoran sapi tersebut selama ini belum dapat termanfaatkan dengan maksimal. Oleh karena itu, tim pengabdian masyarakat ITERA melakukan pembangunan instalasi teknologi reaktor biogas berukuran 4 m3 yang digunakan untuk mengkonversi kotoran sapi menjadi sumber energi terbarukan pengganti LPG yang lebih ekonomis dan ramah lingkungan. Adapun pelaksanaan pengabdian yang dilakukan adalah observasi/survei lokasi, kerjasama dengan mitra, pembangunan instalasi biogas, monitoring/evaluasi, dan pelaporan. Hasil dari program pengabdian masyarakat ini adalah reaktor biogas dengan warna nyala api yang dihasilkan berwarna biru yang menandakan kualitas biogas yang dihasilkan secara visual tidak berbeda dengan gas LPG yang selama ini digunakan. Kandang sapi juga terlihat menjadi lebih bersih. Hal ini berarti dengan adanya penerapan teknologi tepat guna biogas sangat membantu warga dan selangkah lebih maju dalam hal kemandirian energi. Hasil analisis survei kepuasaan masyarakat menunjukkan hampir 95% yang menyatakan sangat puas dan merasa sangat terbantu dengan kehadiran Tim pengabdian masyarakat ITERA.
ANALISIS UNJUK KERJA AGITATOR BLADE HELICAL RIBBON UNTUK PENGADUKAN BAHAN BAKU BIOGAS Ilham Dwi Arirohman; Shintha Sarmila A.S Yahya; Lathifa Putri Afisna
Scientific Journal of Mechanical Engineering Kinematika Vol 7 No 2 (2022): SJME Kinematika Desember 2022
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v7i2.239

Abstract

Biogas adalah sumber energi alternatif yang sangat terjangkau. Untuk meningkatkan hasil produksi biogas, beberapa penelitian menerapkan proses pengadukan, salah satunya adalah proses pengadukan secara mekanis. Penelitian ini bertujuan untuk merancang, membangun dan menguji efektivitas dari agitator blade helical ribbon terhadap homogenitas bahan baku biogas. Parameter desain yang diperhatikan antara lain torsi, gaya, dan daya untuk menggerakkan agitator. Parameter unjuk kerja agitator adalah kestabilan kecepatan putaran dan total dissolved solid (TDS) dari campuran kotoran sapi dan air (slurry). Agitator yang telah dirancang memiliki torsi 8,203 N.m, gaya pengadukan 372,849 N, dan daya yang diperlukan untuk menggerakkan agitator adalah sebesar 143,491 watt atau 0,192 HP. Nilai rasio TDS rerata pada kecepatan putaran 10 rpm adalah 1,35 dengan simpangan baku 0,20; pada kecepatan putaran 30 rpm nilai rasio TDS rerata adalah 1,37 dengan simpangan baku 0,07; dan pada kecepatan putaran 50 rpm nilai rasio TDS rerata adalah 1,80 dengan simpangan baku 0,04. Semakin tinggi kecepatan putaran agitator maka rasio TDS slurry juga akan semakin tinggi. Semakin tinggi nilai rasio TDS, maka semakin efektif proses pengadukan. Semakin kecil simpangan baku nilai rasio TDS, maka semakin homogen slurry di dalam biodigester.
Implementasi Teknologi Microbubble Generator pada Pengolahan Limbah Cair Kotoran Sapi Devia Gahana Cindi Alfian; Lathifa Putri Afisna; Muhammad Syaukani; Ilham Dwi Arirohman; Harmiansyah Harmiansyah
AMMA : Jurnal Pengabdian Masyarakat Vol. 1 No. 09 (2022): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Abstract

Along with the development of the cattle farming industry in Indonesia, many problems arise in terms of waste management. Cow dung waste processing becomes a challenge for the cattle farm industries, especially in handling the liquid waste. Liquid waste produced by cattle farming may pose a negative impact on the health of the people living around the cattle farm if it is not managed properly. One of the efforts to reduce environmental damage due to liquid waste from the farm is by utilizing microbubble generator (MBG) technology to decompose cow dung liquid waste into environmentally friendly waste. The aeration process that occurs in cow dung liquid waste helps aerobic microorganisms to better decompose liquid waste through the addition of dissolved oxygen produced by the microbubble generator in the water. As one of our community service programs, our team came up with an initiative to transfer the know-how of the MBG-based wastewater processing system to a local cattle farm, CV Sanjaya Farm. The program implementation method is by providing training and assistance in the application of MBG technology in the processing of cow dung liquid waste. With an active participation of both our team and partner sides, the MBG technology has been installed at our partner’s locations. As a result of the training and mentoring that we delivered at the partner farm, we observed an increase in the knowledge and skills of both leadership and staff of the partner farm in overcoming the problem of liquid waste management. In addition, a tangible solution has also been built for handling liquid waste to be disposed of into the surrounding environment in a safe and non-polluting manner.
Analysis of Electrical Energy Consumption in Office Buildings of the Institute Technology of Sumatra in Energy Conservation and Efficiency Efforts Khoirun Naimah; Ilham Dwi Arirohman; Muhammad Rizky Zen; Rihardian Maulana Wicaksono; F.X. Nugroho Soelami; Abri Rahmatullah; Leonardo D. Purba; Javeni Eysama L. Gaol
Jurnal Edukasi Elektro Vol 7, No 2 (2023): Jurnal Edukasi Elektro, Volume 7, Nomor 2, 2023
Publisher : JPTE FT UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jee.v7i2.65003

Abstract

Electrical energy is one of the basic human needs in carrying out various activities or daily activities, especially in office buildings such as office buildings of state higher education institutions, namely the Sumatra Institute of Technology (ITERA). Office buildings are the third highest consumer of electrical energy after shopping centers and hotels. The high demand for electrical energy requires the user sector to make efficiency in energy use. Before making efficiency, it is necessary to know the profile of electrical energy consumption including energy consumption intensity (ECI) and significant energy users. Therefore, in this study, an analysis of electrical energy consumption in each ITERA office building was carried out, through observation and interviews according to SNI / ISO 50002: 2018 energy audit procedures. The results obtained show that the total energy use of the 6 largest buildings (A, B, C, D, E, and F) in May 2023 is 144768 kWh and from the calculation of the ECI value is in the very efficient category (7.44 kWh/m2/month). From 6 existing buildings, there are 3 buildings that are very efficient, 1 building is efficient, and 2 buildings are quite efficient. Then, significant energy users were found by 83% in building C AC. Recommendations for saving energy in the effort of energy conservation and efficiency that can be done include, making changes in habits / patterns of use of electrical energy user equipment, especially in air conditioners and dispensers, so as to save electricity 2-21%, and retrofitting refrigerant AC types of split ducts and cassettes that still use R-22 with MC-22 which can save electricity 15-25%.
Program Sosialisasi Pengolahan Kotoran Sapi Menjadi Biogas Di Sanjaya Farm, Lampung Lathifa Putri Afisna; Devia Gahana Cindi Alfian; Ilham Dwi Arirohman; Muhammad Syaukani; Achmad Gus Fahmi
AMMA : Jurnal Pengabdian Masyarakat Vol. 2 No. 10 : November (2023): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Abstract

Unmitigated cow dung waste possesses the capacity to induce pollution and environmental degradation, hence potentially compromising air quality and the well-being of the neighboring population. The objective of this Community Service initiative is to enhance community understanding and promote the adoption of biogas technology as a sustainable energy alternative within livestock communities in the Sukabumi district of Lampung Province. The approach of socialization and direct instruction employed in this study involves educating farmers and local populations on the effective treatment of cow dung waste, thereby mitigating environmental degradation and harnessing waste as a valuable energy resource. Pretest and posttest questionnaires were administered to assess participants' comprehension levels and evaluate the outcomes of the socialization process. According to the responses obtained from the questionnaires completed by the participants, a significant majority (90%) acknowledged the existence of environmental consequences associated with untreated cow dung. Furthermore, an overwhelming majority (99%) expressed agreement with the idea of converting cow dung into biogas. Additionally, a substantial proportion (90%) of the participants reported an enhanced comprehension of the process involved in converting cow dung into biogas. This phenomenon demonstrates that the community's view necessitates the integration of technology in order to address their issues. Hence, the utilization of suitable technology is imperative for the community, particularly cattle farmers, to effectively manage the disposal of cow dung waste, which significantly affects the environment. The utilization of biogas technology has the potential to mitigate this impact and offer alternative energy alternatives that are more ecologically sustainable for the local community.
Sampul Depan dan Daftar Isi Ilham Dwi Arirohman
Journal of Science, Technology, and Visual Culture Vol 2 No 2 (2022): Juli 2022
Publisher : Jurusan Teknologi Produksi dan Industri, Institut Teknologi Sumatera

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Abstract

Sampul Depan dan Daftar Isi Ilham Dwi Arirohman
Journal of Science, Technology, and Visual Culture Vol 1 No 2 (2021): Oktober 2021
Publisher : Jurusan Teknologi Produksi dan Industri, Institut Teknologi Sumatera

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Abstract

Co-Authors Abri Rahmatullah Achmad Gus Fahmi Achmad Gus Fahmi Afit Miranto Akhmad Zidni Hudaya Al Barra Harahap Apriansyah Julio Deendarlianto Devia Gahana Cindi Alfian Devia Gahana Cindi Alfian Devy Arysandi F.X. Nugroho Soelami Fahmi Sapta Hadi Harmiansyah Hotdimas Simanjuntak I Indarto Ismail, Abdi Javeni Eysama L. Gaol Khoirun Naimah Kiki Yuli Handayani Lathifa Putri Afisna Leonardo D. Purba M. Rizky Zen Madi Madi Muhammad Khanafi Muhammad Rizky Zen Muhammad Syaukani Muhammad Syaukani Putty Yunesti Rahmat Ramadhan Wahab Rihardian Maulana Wicaksono Rihardian Maulana Wicaksono Shintha Sarmila A.S Yahya Siti Muslimah Tuswan Tuswan Yulianti Fatmawati