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Utilization of Cassava Peel (Manihot utilissima) Waste as an Adhesive in the Manufacture of Coconut Shell (Cocos nucifera) Charcoal Briquettes Bayu Rudiyanto; Intan Rida Agustina; Zeni Ulma; Dafit Ari Prasetyo; Miftah Hijriawan; Bambang Piluharto; Totok Prasetyo
International Journal of Renewable Energy Development Vol 12, No 2 (2023): March 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.48432

Abstract

Coconut shells and waste cassava peels could be used as the main raw material for biomass briquettes for alternative energy sources in Indonesia. This study aims to analyze the quality of briquettes based on a coconut shell and cassava peel adhesive through proximate analysis with three treatment ratio variations. The ratio of coconut shell to cassava peel used varied from V1 (75%:25%), V2 (70%:30%), and V3 (65%:35%). Based on the result, the charcoal briquettes produced have a density of 0.61 gram/cm³-0.66 gram/cm³, water content of 5.51%-7.85%, ash content of 1.50%-2.86%, combustion rate of 0.021 gram/s-0.026 gram/s, and the calorific value of 6,161 cal/gram-6,266 cal/gram. However, all the treatment variations appropriate the SNI 01-6235-2000, the national standard of Indonesia for the quality of charcoal briquette, which includes the calorific value (>5,000 cal/gram), moisture content (<8%), and ash content (<8%). Briquettes with the best quality were generated by V1 with a density of 0.66 gram/cm³, water content of 5.51%, ash content of 1.50%, combustion rate of 0.026 gram/s, and calorific value of 6,266 cal/gram. Furthermore, briquette material from the coconut shell waste with natural cassava peel adhesive can be feasible as an alternative fuel.
PENGGUNAAN TEKNIK IMMERSION COOLING PADA PENDINGINAN PANEL SURYA Bayu Rudiyanto; Deva Tri Febiana; Risse Entikaria Rachmanita; Dedy Eko Rahmanto
Journal of Engineering Science and Technology Vol. 1 No. 2 (2023): May
Publisher : Indonesian Journal Publisher

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

Abstract

Renewable energy that is now widely loved is solar energy, which can be converted into electrical energy with the help of solar panels. Solar panels are made of semiconductor silicon which absorbs photons from the sun's energy. However, the sun does not only produce photons which can be converted into electrical energy, but there is also heat energy which can increase the temperature of the solar panels which can reduce the performance of the solar panels. Therefor researchers conducted research to reduce the temperature of solar panels by using the monocrystalline solar panel cooling method using mineral oil with the immersion cooling technique. However, from the experimental data in the field, it was found that the results were not good where solar panels without cooling were more than solar panels with cooling. The anova analysis test which was continued with the Tukey method confirmed that the voltage and current of the uncooled solar panels were superior, namely 4.48 V and 0.94 A. Solar panels with a 3cm cooling liquid variation produced a power of 3.93 W while non-liquid solar panels The cooler produces a power of 4.81 W, so research on cooling solar panels using liquid mineral oil with immersion cooling techniques has not succeeded in increasing the performance of solar panels and cannot be applied to PLTS.
UJI PERFORMA TURBIN ANGIN SAVONIUS TIPE U BERDASARKAN VARIASI SUDUT GUIDE VANE Irani, Cahya; Rudiyanto, Bayu; Rachmanita, Risse Entikaria
JST (Jurnal Sains Terapan) Vol 9, No 1 (2023): JST (Jurnal Sains Terapan)
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat, Politeknik Negeri Balikpapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jst.v9i1.1567

Abstract

The purpose of this study was to determine the effect of adding a guide vane or deflector on the performance of the Savonius Type U wind turbine as an effort to improve the performance of the Savonius Type U wind turbine. This research is a type of experimental research, including the addition of a guide vane or wind direction consisting of 3 variations of the pitch angle on the guide vane, including 30 °, 60 ° and 80 ° with variations in wind speed using a variation of the distance of 150 cm, 180 cm and 200 cm from the source. wind in the form of a blower to the Savonius Type U wind turbine by testing using a generator and without a generator and comparisons with the data without using a guide vane on the Savonius Type U wind turbine. The observed and measured factors are wind speed, power, rpm (rotation per minute), torque and Cp (coefficient of power). The results of the experimental research carried out obtained maximum data results on the Savonius Type U wind turbine on the variation of the addition of a 40 ° pitch angle guide vane with a distance of 150 cm, an average wind speed of 7.6 m / s to 7.9 m / s with a turbine rotation. equal to 218.1 rpm the power generated is 61.70 Watt with a Cp of 0.88%, torque of 3.46 Nm using a load of 12 Watt LED lights. 
Analisa Aerodinamika Airfoil NACA 4412 Bentuk SemiInverse-Tapper Tipe HAWT (Horizontal Axis Wind Turbine) Rachmanita, Risse Entikaria; Rudiyanto, Bayu
JST (Jurnal Sains Terapan) Vol 8, No 1 (2022): JST (Jurnal Sains Terapan)
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat, Politeknik Negeri Balikpapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jst.v8i1.1428

Abstract

Wind turbine blades are using to drive generator, in the blades there are airfoils that can produce lift force. One that affects the airfoil performance is angle of attack (AOA). This study was conducted to analyze the aerodynamics of the NACA 4412 semi inverse-tapper airfoil. The material is using PVC with an airfoil size (length 20 cm, a base chord 13.26 cm and a tip chord 12 cm) at wind speed 3 m/s, 5 m/s, 7 m/s, 9 m/s and 12 m/s. The test was performed by experimental method by using wind tunnel and simulation with solidwork application, the results of two methods are compared for analysis. The results of research show that more fast the wind speed that strikes the airfoil, more greater the value of lift force and drag force, this is directly proportional to the value of lift coefficient and drag coefficient, the best angle of attack for airfoil type NACA 4412 semi inverse-tapper form angular position angle of attack 5 ° at wind speed 3 m/s. Keywords : angel of attack, HAWT, NACA 4412, semi inverse-tapper
Pengaruh Flow Rate pada Sistem Pendinginan Panel Surya Monocrystalline 20 Wp Nisa', Sa'adatun; Rudiyanto, Bayu; Nuruddin, Mochammad; Fahriannur, Ahmad
Jurnal Energi Baru dan Terbarukan Vol 4, No 3 (2023): Oktober 2023
Publisher : Program Studi Magister Energi, Sekolah Pascasarjana, Universitas Diponegoro, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jebt.2023.18127

Abstract

Indonesia merupakan negara astronomi yang memiliki 2 musin yaitu hujan dan panas sehingga sinar matahari terpancar sepanjang tahun. Pembangunan PLTS menjadi potensi EBT terbesar yaitu 3,295 GW. Panel surya bekerja optimal pada suhu 25°C sedangkan suhu di Indonesai sekitar <35°C maka dibutuhkan pendinginan untuk menjaga kestabilan suhu permuakan panel surya. berdasarkan 2 perlakuan yang telah diuji dengan 3 variasi flow yang berbeda didapatkan rata-rata daya keluaran panel surya tanpa pendinginan sebesar 5.56 Watt dan panel surya dengan pendinginan sebesar 5.55 Watt pada variasi flow 4 LPM. Hal ini terjadi karena adanya endapan pada permukaan panel surya dengan pendinginan serta laju aliran mempengaruhi daya serap panel surya terhadap iradiasi matahari.
Solar-powered seawater desalination: A contribution to provide energy-efficient clean water Widjonarko, Widjonarko; Aditya Rahardi, Gamma; Rudiyanto, Bayu; Ishamul Ayady Akma, Ahmad; Ahmed Mohammed Ate, Abdelrahim
Borobudur Engineering Review Vol 3 No 1 (2023): Industrial Technology Support
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/benr.9042

Abstract

This study focuses on developing a prototype for a seawater desalination system powered by solarpanel. The desalination process is heated by a solar collector and 150 WP solar panel. The primaryobjective is to design, develop, and evaluate the prototype's efficacy, affordability, and scalability.The efficiency was measured by the quantity of freshwater produced per unit of solar energy. Ofthe three distillation tests, it was determined that the addition of a heater enhanced theperformance of the system. However, the overall efficiency was limited due to the solar panel andcollector's low heat output. A positive correlation was observed between irradiance andtemperature, but incomplete evaporation indicated the need for additional research to optimizethe process. The system consisted of a solar collector, a heater, and a distillation apparatus. Threedistillation tests revealed that the addition of a heater improved the system's performance,resulting in a maximum achievable efficiency of 0.99% and the production of 16 ml of fresh water.This study demonstrates the potential for renewable energy sources to power seawaterdesalination and lays the groundwork for future sustainable desalination technologies despite itslimitations.
PEMBERDAYAAN RUMAH PANGAN LESTARI MELALUI PENGEMBANGAN AGRIBISNIS SAYURAN DAN PEMASARAN SOSIAL MEDIA DI KAMPUNG SDGs BANGSALSARI, JEMBER Sundari, Sri; Nurhidayat, Suci Cita Eka; Rudiyanto, Bayu; Kusuma, Ahmad Ahsin
INTEGRITAS : Jurnal Pengabdian Vol 6 No 2 (2022): AGUSTUS - DESEMBER
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat - Universitas Abdurachman Saleh Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36841/integritas.v6i2.1494

Abstract

Rumah Pangan Lestari (RPL) sebagai Kampung SDGs. terletak di Kecamatan Bangsalsari merupakan salah satu binaan BAZNAS (Badan Amil Zakat Nasional) Jember, beraktivitas melakukan program pemberdayaan masyarakat dengan pengembangan agribisnis sayuran yang dipasarkan secara offline maupun online. Permasalahan yang dihadapi adalah masih banyak lahan kosong belum dimanfaatkan; masih rendahnya kesadaran pengembangan agribisnis sayuran; belum memanfaatkan strategi pemasaran online di Rumah Pangan Lestari Kampung SDGs Bangsalsari. Program ini bertujuan untuk pemberdayaan masyarakat tanaman hortikultura; pemecahan masalah dibidang pengembangan agribisnis sayuran dan pemasaran sayuran secara online. Hasil program pengabdian adalah melakukan kegiatan penanaman sayuran di Rumah Pangan Lestari Kampung SDGs Bangsalsari dengan melibatkan langsung masyarakat sekitar Kawasan Rumah Pangan Lestari, dengan menanam sayur selada. selanjutnya melakukan promosi secara online melalui social media sehingga komoditas sayuran dapat dikenal luas oleh masyarakat. Hasil nyata yang didapatkan adalah termanfaatkannya lahan kosong sebagai sarana pemberdayaan masyarakat di kawasan Rumah Pangan Lestari.
STUDI PENAMBAHAN GRID DAN REFLEKTOR TERHADAP EFISIENSI KOMPOR Agustina, Dewi; Ulma, Zeni; Nuruddin, Mochammad; Rudiyanto, Bayu
Eksergi Vol. 18 No. 1 (2022): JANUARI 2022
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1583.315 KB) | DOI: 10.32497/eksergi.v18i1.3218

Abstract

Permasalahan krisis energi BBM dan Gas Bumi menjadi perbincangan dibelahan dunia, adanya penambahan populasi penduduk menyebabkan permintaan kebutuhan energi semakin meningkat. Jenis kompor gas sangat beragam, perlu adanya kajian mengenai efisiensi termal kompor gas. Penambahan material grid dengan ketebalan 3 mm memiliki 3 variasi yakni variasi 1 dengan diameter lubang 0.4 cm dan 60 lubang, variasi 2 dengan diameter lubang 0.6 cm dan 50 lubang, serta variasi 3 dengan diameter lubang 0.8 cm dan 40 lubang. Penambahan material tersebut berfungsi memfokuskan nyala api dan meminimalisir losses. Pembuatan alat meliputi persiapan alat dan bahan, modifikasi dudukan kompor, pembuatan material grid dan reflektor, serta pengujian. Metode yang digunakan dalam pengujian adalah metode Water Boiling Test (WBT). Parameter dalam pengujian yaitu waktu start up, total waktu operasi, waktu pendidihan, panas sensibel, panas laten, dan efisiensi termal. Rata rata hasil penelitian menunjukkan bahwa waktu didih yang dihasilkan oleh grid variasi 1 dan reflektor 1 baris sirip sebesar 18.06 menit dibandingkan tanpa penambahan material grid dan reflektor sebesar 22.02 menit. Konsumsi bahan bakar terjadi peningkatan pada grid variasi 3 dan reflektor 1 baris sirip sebesar 19,44 gr dibandingkan grid variasi 1 dan reflektor 1 baris sirip sebesar 18,56 gr, sedangkan untuk efisiensi tertinggi dihasilkan grid variasi 1 dan reflektor 1 baris sirip sebesar 57.73% dan efisiensi terendah tanpa menggunakan grid dan reflektor sebesar 49.54%.
Manufacturing Non Adhesive Biobriquettes With Main Ingredients From Cow Manure Waste at Dairy Cows Teaching Factory Rachmanita, Risse Entikaria; Aminullah, Muhammad; Susmiati, Yuana; Febriani, Siti Diah Ayu; Rudiyanto, Bayu
International Journal of Technology, Food and Agriculture Vol. 1 No. 1 (2024): February
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/tefa.v1i1.4511

Abstract

Biobriquettes are solid energy source that comes from biomass that is compressed under a certain pressure. The development of non-adhesive biobriquettes has not been widely carried out. Teaching factory (TEFA) Dairy Cows Politeknik Negeri Jember have 51 cows and products ± 18-20 kg/day of cow manure which have not managed optimally. On the other side of district Jember produces 1,945 tons of coconut shell waste per year which is pill up, thrown away and used as stove fiel or simply burned. This research was conducted with an experimental method using composition variations of raws material and mixed material to obtain the best mixture ratio for biobriquettes, 4KS6AR (40% : 60%), 5KS5AR (50% : 50%), 6KS4AR (60% : 40%). The raw material for cow dung is cleaned from grass fibers. The coconut shells raw material that has been dried in the sun, then pyrolyzed at a temperature of approximately 200-250ºC for 6-7 hours, then ground to size of 40, 60 and 100 mesh. From the tests that have been carried out, the most optimal value to quality standards of National Standard of Indonesia (SNI) 01-6235-2000 is with a water content of 2,382 %, calorific value of 6.650 cal/g.
Analisis Karakteristik Pasta Bio-Baterai Berbahan Baku Musa Paradisiaca dan Citrus Sinensis Faizin, Nur; Arif, M. Farhan; Rudiyanto, Bayu; Qanitah, Qanitah
TEKNIKA Vol. 20 No. 1 (2026): Teknika Januari 2026 (In Progress)
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.17866764

Abstract

Limbah kulit pisang dan jeruk mengandung bahan organik seperti kalium, magnesium, dan asam sitrat, yang dapat berfungsi sebagai sumber bio-baterai ramah lingkungan. Tujuan dari penelitian ini adalah untuk mengevaluasi bagaimana perbedaan dalam komposisi kulit pisang tanduk (Musa paradisiaca) dan kulit jeruk peras (Citrus sinensis) memengaruhi karakteristik listrik bio-baterai seperti tegangan, arus, dan daya tahan. Sebanyak 11 sampel dengan komposisi berbeda (0–100%) dibuat dalam bentuk pasta, diisi ke wadah baterai bekas AA, lalu diuji menggunakan multimeter dan pH meter selama 6 jam. Hasil menunjukkan bahwa kulit pisang kaya kalium (77,33%) dan magnesium (7,59%), sedangkan kulit jeruk mengandung kalsium (39,22%) dan magnesium (19,8%). pH cenderung lebih asam seiring meningkatnya proporsi kulit jeruk. Sampel B1 yang mengandung kadar jeruk tinggi menghasilkan tegangan dan arus awal tertinggi, namun cepat menurun, sedangkan sampel dengan kandungan pisang tinggi (B11) memiliki daya tahan lebih lama (hingga 18 jam 2 menit). Bio-baterai mencapai hingga 53,65% tegangan dan 44,40% arus baterai AA konvensional. Kesimpulannya, campuran kulit jeruk meningkatkan daya listrik sementara kulit pisang memperpanjang durasi kerja. Bio-baterai ini menunjukkan potensi sebagai solusi energi alternatif berbasis limbah organik meskipun masih memerlukan pengembangan lebih lanjut.