Utilization of the potential energy of water scale piko hydro is still very small, one of the challenges is that water turbines are not sold freely on the market, to get it must be ordered in advance to certain shops or workshops so that the price of turbines becomes expensive. The purpose of this experimental research is to analyze the performance of alternative fluid engines that can function as water turbines, namely pumps as turbines (PAT). Tests were carried out on three sizes of centrifugal pumps, namely 1 inch, 1.5 inches and 2 inches. using the same test equipment. The test results found that centrifugal pumps can be used as a good alternative as a water turbine. The larger pump size results in a lower head, power and efficiency. The results of testing at constant rotation and head, PAT 1 inch superior to PAT 1.5 inches, and PAT 2 inches. The maximum power and efficiency of 1 inch PAT is 235 W and 38% occur at a constant head of 15 m, 4.1 L/s discharge and 850 rpm rotation. This data inspired the researchers to create head and discharge standards suitable for each PAT size. Furthermore, many centrifugal pumps are sold in the market, it is necessary to do further research to get the right recommendations about the type, brand and size of the ideal pump used as a pico hydro scale water turbine in accordance with the potential for water and head discharge in the community.
Telpon seluler saat ini tidak hanya dapat digunakan untuk melakukan percakapan dan pengiriman pesan tetapi dapat juga digunakan untuk mengontrol peralatan elektronik. Penelitian ini bertujuan untuk mendayagunakan fasilitas pendeteksi suara yang ada pada android untuk mengontrol lampu. Metode yang digunakan dalam penelitian ini adalah penelitian terapan untuk menghasilkan perangkat keras dan perangkat lunak yang dapat digunakan untuk mengontrol lampu. Perangkat keras berupa rangkaian elektronik berbasis Arduino sedangkan perangkat lunak merupakan aplikasi yang dapat dijalankan pada telpon seluler berbasis android.
Penggunaan teknologi tepat guna dapat mengurangi biaya produksi, penggunaan sistem irigasi tetes atau sistem irigasi menggunakan sprinkler dapat membantu petani menjaga kelembaban tanah tetapi diperlukan campur tangan manusia untuk mengoperasikannnya. Oleh karena itu penelitian ini bertujuan untuk mengembangkan sistem irigasi menggunakan sprinkler yang dapat bekerja secara otomatis sehingga dapat menghemat waktu dan tenaga manusia. Sistem ini merupakan sistem cerdas yang dikendalikan oleh mikrokontroler sehingga dapat bekerja secara berkesinambungan dengan sedikit bantuan manusia. dengan adanya sistem ini, proses perawatan tanaman dapat dilakukan lebih optimal, menghemat air, waktu, tenaga dan biaya. Peneilitian ini merupakan penelitian terapan dengan memikirkan infrastruktur yang dibutuhkan (perangkat keras, perangkat lunak dan perangkat sumber daya manusia), kemudian membuat desain gambar dengan teknik siklus daur ulang yang terdiri dari analisis kebutuhan, perancangan, implementasi, uji coba dan evaluasi. Analisa kebutuhan diperlukan untuk melihat apa saja yang dibutuhkan oleh sistem agar dapat bekerja sesuai yang di inginkan, pembuatan gambar skematik, menguji coba rancangan pada program simulasi (Proteus). Kemudian pada saat implementasi dilakukan pemasangan komponen sesuai dengan gambar skematik. Terakhir pada tahapan testing, dilakukan pengujian unjuk kerja sistem dengan melakukan tahapan evaluasi.Kata kunci : sistem irigasi, perawatan tanaman, sistem cerdas, teknik siklus daur ulang ABSTRACTThe use of appropriate technology can reduce production costs, the use of drip irrigation systems or irrigation systems using sprinklers can help farmers maintain soil moisture but requires human intervention to operate them. Therefore, this study aims to develop an irrigation system using sprinklers that can work automatically so that it can save time and human effort. This system is an intelligent system controlled by a microcontroller so that it can work continuously with little human assistance. With this system, the plant care process can be carried out more optimally, saving water, time, energy and costs. This research is an applied research by thinking about the required infrastructure (hardware, software and human resource tools), then making a drawing design with a recycling cycle technique consisting of needs analysis, design, implementation, testing and evaluation. Needs analysis is needed to see what is needed by the system so that it can work as desired, making schematic drawings, testing the design on a simulation program (Proteus). Then at the time of implementation, the components are installed according to the schematic drawings. Finally, at the testing stage, the system performance test is carried out by conducting an evaluation stage.
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