Semakin banyak populasi, maka semakin banyak krisis yang terjadi. Seiring berjalannya waktu dan pertambahan jumlah manusia maka peningkatan kebutuhan semakin tinggi ditambah lagi semakin tipis kebutuhan bahan baku. Jika krisis energi tidak segera ditanggulangi maka akan berdampak besar di kemudian hari. Maka dari itu penanggulangan energi terbarukan yang efisien harus menggantikan peran energi fosil salah satunya diperlukan peranan solar cell. Penelitian ini merupakan penelitian kuantitatif dan merupakan penelitian eksperimen. Ketika terdapat data dari penelitian sebelumnya yang relevan maka dapat dianalisis data dengan persamaan-persamaan terkait dan disesuaikan dengan spesifikasi dari produk yang telah ada. Kemudian, hasil penelitian sudah didapat analisis perhitungan data maka sesuaikan hasil penelitian dengan spesifikasi yang ada. Untuk aplikasi panel surya berdasarkan penelitian ini maka bisa digunakan jenis panel surya tipe polycrystalline sesuai dengan nilai tegangan, kuat arus dan daya pada penelitian.Kata kunci: Panel Surya, Energi, EfisienThe more population there is, the more the crisis. As time goes by, and the number of people increases, the demand for raw materials is getting higher and supply for raw materials is getting thinner. If the energy crisis is not addressed immediately, it will have a big impact in the future. Therefore, efficient management of renewable energy must replace the role of fossil energy, one of which is the role of solar cells. This research is quantitative research and experimental research. When there is data from relevant previous studies, the data can be analyzed with related equations and adapted to the specifications of existing products. When the results of the research have been obtained, the analysis of data calculations is then adjusted to the results of the study with the existing specifications. For solar panel applications based on this research, polycrystalline types of solar panels can be used according to the voltage, current and power values in the study.Keywords: Solar Panels, Energy, Efficient
Nowadays modern computer GPU (Graphic Processing Unit) became widely used to improve the performance of a computer, which is basically for the GPU graphics calculations, are now used not only for the purposes of calculating the graphics but also for other application. In addition, Graphics Processing Unit (GPU) has high computation and low price. This device can be treat as an array of SIMD processor using CUDA software. This paper talks about GPU application, CUDA memory and efficient CUDA memory using Reduction kernel. High-performance GPU application requires reuse of data inside the streaming multiprocessor (SM). The reason is that onboard global memory is simply not fast enough to meet the needs of all the streaming multiprocessor on the GPU. In addition, CUDA exposes the memory space within the SM and provides configurable caches to give the developer the greatest opportunity of data reuse.
This research analyses v-bending results using galvanized SGCC (JIS G 3302) sheet steel. The accuracy of the angle and dimensions of the bending results are the significant elements of the bending process that must be achieved. The bending spring-back/spring-go phenomenon has an impact on bending angle accuracy. If proper parameters are chosen, the spring-tub/spring-go angle should be minimized. This study aimed to see how the proposed v-bending process affected the spring-tub/spring-go angle value. An experimental approach was selected in this study. V-die bending opening, V-die punch angle, V-die punch speed, and bending force are all input parameters for the v-bending process. Meanwhile, in this study, galvanized steel with a thickness of 1.2 mm was used. The results of the ANOVA evaluation showed that the v-die punch speed and bending force are two parameters that affect the response of the variable, with a percentage contribution of 31.0% each. The minimum spring-back angle was found in the second sample, while the minimum spring-go angle was found in the fourth sample
Penduduk Indonesia belum sepenuhnya mendapat layanan penerangan listrik, terutama yang berada di daerah terpencil dan berada di lereng-lereng bukit, sementara di lokasi tersebut terdapat potensi energi yang cukup untuk mengerakkan turbin air sebagai penggerak generator listrik. Turbin pelton adalah salah satu jenis turbin impuls yang performancenya dipengaruhi oleh debit air, nosel, dan jumlah sudu, atas dasar tersebut penulis menyajikan artikel yang menerapkan metode quality function deployment (QFD) dan pengujian eksperimental terhadap prototipe turbin pelton di laboratorium Universitas Buana Perjuangan Karawang. Langkah-langkah dalam penelitian ini meliputi studi literatur dan lapangan, perancangan, pembuatan alat uji, pengujian, analisis data, dan kesimpulan. Variasi pengujian berdasarkan pada diameter, posisi dan jumlah nosel terhadap sudu turbin yang berjumlah 12 buah dan berdiameter150 mm, sedangkan untuk pembangkit listriknya menggunakan generator mini berdaya 350 watt. Hasil pengujian yang diperoleh adalah daya input (Pin) terbesar dengan nilai 73,6 watt terdapat pada dn 9 mm dengan posisi nozel atas dan bawah dan jumlah nozel 2 buah. Daya turbin (Pt) ) terbesar dengan nilai 70,1 watt terdapat pada dn= 6 mm, posisi nosel di atas dan jumlah nozel 1 buah, efisiensi turbin (ηt) terbesar dengan nilai 95,4 % terjadi pada dn = 9 mm dengan jumlah nosel 1 buah dengan posisi nosel di atas, daya generator (Pgen) terbesar 11,7 watt terjadi pada dn = 9 mm dengan jumlah nosel 1 buah dengan posisi nosel di atas, effisiensi generator (ηgen) terbesar dengan nilai 17,9 % terjadi pada dn = 9 mm dengan jumlah nosel 1 buah dengan posisi nosel di atas dan efisiensi sistem terbesar (ηsis) 17,1% terjadi pada dn = 9 mm dengan jumlah nosel 1 buah d posisi nosel di atas. Kata kunci: Turbin pelton, quality function deployment (QFD), pengujian eksperimental
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