Jurnal Teknik Terapan

Penerapan Energi Surya Sebagai Sumber Energi Penggerak Pompa Air Tanaman Hidroponik NFT (Nutrient Film Technique)

2024-02-17T05:38:27+00:00

Energi merupakan kebutuhan vital untuk menunjang kebutuhan hidup yang meliputi sektor industri, transportasi, pertanian dan kebutuhan rumah tangga. Kebutuhan energi yang paling krusial adalah kebutuhan energi listrik dimana setiap kegiatan sehari hari menggunakan energi listrik Pemanfaatan energi terbarukan (renewable energy) dirasa sangat tepat untuk menggantikan penggunaan listrik konvensional, disamping untuk mengurangi pengeluaran biaya listrik, energi terbarukan juga dapat mendukung terciptanya green energy dan mengurangi penggunaan listrik energi fosil yang semakin menipis. Penggunaan energi matahari (solar panel) merupakan pilihan yang tepat dikarenakan penyinaran matahari yang berlangsung antara 7 sampai 8 jam sehari merupakan potensi yang baik. Tujuan dari penelitian ini adalah untuk merancang dan membuat PLTS sebagai sumber energi penggerak pompa pada tanaman hidroponik NFT (Nutrient Film Technique) dan menganalisis energi rata- rata yang dihasilkan dari sistem konversi energi cahaya matahari menjadi listrik pada panel surya untuk sistem hidroponik NFT. Dari hasil perancangan yang telah dilakukan menunjukkan bahwa energi yang dihasilkan panel surya belum mencukupi kebutuhan beban harian. Total energi tertinggi yang dihasilkan panel surya adalah 330,1 W/ hari.

Minimasi Biaya Perawatan Mesin VIS Pulper Pengupasan Biji Kopi dengan Menggunakan Metode Preventive Maintenance Di PTPN XII Ngrangkah Pawon

2023-06-22T05:13:06+00:00

The development of industrial technology requires companies to be able to use existing resources. The most important thing in the production process is the machine. PTPN XII Ngrangkah Pawon is a limited liability company owned by the Republic of Indonesia and PT Perkebunan Nusantara III (Persero). The use of machines is also used in the PTPN production process. The purpose of this research is to find out whether it is possible to minimize the cost of maintaining the vis pulper machine through preventive maintenance and repair maintenance methods. This type of research is carried out quantitatively by observing and studying the material obtained during the production process for three years (2020-2022). This research was conducted offline for 1 month starting from early July to August. Data analysis was carried out using two methods, namely repair policies and preventive policies. maintenance using repair maintenance with a period of 3 years, namely in the production process by repair calculation in May 2020 the results were Rp. 497,354/week while calculating maintenance cost preventive maintenance results obtained Rp. 708,817/week by scheduling every 4 weeks. For the results of treatment repair calculation maintenance in May 2021 the production process obtained a result of Rp. 6,797,131/week while on preventive maintenance get the calculation results of Rp. 8,508,950/week with scheduling once a week. Finally, in 2022, in May, the calculation results were obtained using repair maintenance Rp. 373,089/week while on preventive maintenance Rp. 524,366/week with a schedule of 4 weeks. Based on the results of the calculations it is explained that minimizing costs using the method of preventive maintenance can be applied, but to get a cheaper fee it is better to use a repair policy maintenance because the estimated results of spending calculations are cheaper compared to using maintenance expenses for preventive maintenance.

Pembuatan Bodi Prototype Mobil Hemat Energi Berbahan Fiberglass di Politeknik Negeri Jember

2023-06-07T07:20:19+00:00

The use of fiberglass in Indonesia is still limited for manufacturing. That only vehicle body components for mini buses and buses, there are still not many domestically assembled custom car vehicles that include their original specifications as bodies made of fiberglass. This study aims to: Determine the right type of body material to be used in Energy Saving cars” Jember State Polytechnic, Knowing the design of the KMHE Polije car body with fiberglass as the main material. This study used the Research and Development (R & D) method with the research object taken was the design of the KMHE Polije car. Data collection methods were carried out in making the body, namely the literature method, the observation method and the interview method. After determining the desired method, then the manufacture of the car body is carried out. In its manufacture, several preparations are required, namely making designs, making molds, and making bodies using fiberglass media. Making the body adjusted to the dimensions of the length. The conclusion of this research is that the body of the Energy Saving Car prototype can be attached to the frame properly after the car is used or driven and the Energy Saving Car prototype body made of fiberglass material is very appropriate because it has a light character, easy to shape. This research was conducted from the feasibility stage with design validation to making the product and testing it. Based on the validation results by design experts, an average score of 85% is obtained with the "Valid" criteria so that the product is feasible to use.

Analisis Tekno Ekonomi Pemasangan PLTS Rooftop On Grid 120 Kw (Studi Kasus PLTS di PT Santinilestari Energi Indonesia)

2024-02-17T05:35:29+00:00

Pembangkit Listrik Tenaga Surya (PLTS) merupakan salah satu sistem pemanfaatan sumber energi baru terbarukan (EBT) untuk menghasilkan energi listrik. Penerapan PLTS di Indonesia terbilang cukup baik dengan dukungan rata-rata intensitas radiasi matahari sebesar 4,8 kWh/m² per harinya. Untuk meminimalisir kerugian investasi PLTS akibat modal awal yang cukup besar, diperlukan sebuah analisis kelayakan atau yang disebut sebagai analisis tekno ekonomi. Tujuan penelitian ini adalah untuk melakukan analisis tekno ekonomi terhadap pemasangan PLTS rooftop On Grid System dengan kapasitas 120 kW di PT Santinilestari Energi Indonesia. Metode yang digunakan adalah kuantitatif prediktif dengan mengambil data perolehan energi pada tahun pertama beroperasi, yaitu sepanjang tahun 2020, untuk memprediksikan perolehan energi selama usia proyek dengan asumsi adanya degradasi kapasitas panel surya sebesar 0,5% per tahun. Parameter yang digunakan adalah Net Present Value (NPV), Internal Rate of Return (IRR), Profitability Index (PI), dan Discounted Payback Period (DPP). Suku bunga acuan menggunakan nilai suku bunga di awal berjalannya proyek, yaitu sebesar 4,75%. Berdasarkan analisis yang dilakukan, diperoleh nilai NPV sebesar Rp 457.542.400,57; nilai IRR sebesar 8,17% atau lebih besar daripada MARR; nilai PI sebesar 1,32; dan DPP tercapai pada tahun ke-17, sehingga menunjukkan investasi PLTS rooftop On Grid System 120 kW ini layak untuk dilakukan.

Efesiensi Penggunaan Bahan Bakar Pertamax (Octan 92) Pada Kendaraan Hemat Energi Di Politeknik Negeri Jember

2023-06-07T08:40:58+00:00

At this time motorcycle users are increasing, the need for this means of transportation is very helpful for daily activities. With the importance of this means of transportation, people will choose motorbikes that have great power, are fuel efficient and are environmentally friendly. Many automotive fields are modifying or changing components such as standard coils replaced by racing coils so that the resulting combustion is greater and produces spark plugs larger and aims to get better performance. With better combustion, it is expected that the performance of an engine will definitely increase, one of which is from fuel consumption. The purpose of this study is to determine fuel efficiency on engine performance and then analyze specific fuel consumption on 4 stroke motorbikes. In this experiment, performance was tested to analyze the specific fuel consumption used in Pertamina's fuel production, namely Pertamax. This type of gasoline was tested on a Honda revo fit 110 cc motorbike using experimental. calculation of fuel consumption on the Argopuro vehicle car, namely 0.21 L/H