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All Journal Rekayasa Mesin Jurnal Mechanical Jurnal Teknik Mesin Indonesia
Gian Villany Golwa
Universitas Mercu Buana
Aerospace Engineering Automotive Engineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Efisiensi Keluaran Energi Listrik Sistem Pembangkit Tenaga Pico Hydro Dengan Menggunakan Turbin Jenis Archimedes Screw Maulana Abdul Jabar; Gian Villany Golwa; Candra Bagus Prasetyo; Tony Indra Kusuma
JURNAL MECHANICAL Vol 11, No 2 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/mech.v11.i2.202006

Abstract

Energi listrik merupakan salah satu kebutuhan premier saat ini. Penggunaan energi fosil yang terus menerus semakin berkurang ketersediaannya dia alam, oleh karena itu perlu adanya energi alternatif. salah satunya pemanfaatan energi potensial pada penampungan air perumahan. Pico hydro merupakan salah satu yang cocok dalam pemanfaatan energi potensial tersebut dengan menggunakan turbin jenis Archimedes screw dimana teknologi ini bekerja pada aliran dan head yang rendah. Penelitian ini dilakukan dengan membuat prototipe pembangkit pico hydro dengan perbandingan sudut kemiringan turbin pada pengujian untuk mengukur nilai efisiensi turbin. Dari hasil pengujian didapat daya maksimum turbin pada sudut kemiringan 35° sebesar 0.14 watt dengan efisiensi 17.3 %, sudut 45° sebesar 0.13 watt dengan efisiensi 14.9 %, dan 55° sebesar 0.10 watt dengan efisiensi 10.6 %.
INDUCED DRAFT FAN DOMINANT FREQUENCY DETECTION USING SHORT-TIME FOURIER TRANSFORM METHOD Dedik Romahadi; Wiwit Suprihatiningsih; Gian Villany Golwa; Mahesh Kumar
Jurnal Rekayasa Mesin Vol. 14 No. 2 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i2.1305

Abstract

Weak suction and large vibrations indicate an Induced Draft Fan (IDF) problem. The Fast Fourier Transform (FFT) method cannot be applied to non-stationary vibration signals. Therefore, this study aims to analyze non-stationary vibration signals for IDF vibration signals at start-up so that the source of damage to the IDF can be found. The research process begins with a brief measurement of both bearing locations with horizontal and axial axes. Processing of the vibration signal from the measurement using the FFT method and the Short Time Fourier Transform (STFT). Based on the STFT spectrogram graph for measurements on the horizontal and axial axes, the dominant frequency values are the same. The frequency with the largest amplitude value is at one RPM IDF or 25 Hz. High vibration at 1 RPM is a big indication that the IDF is experiencing unbalance.
Studi potensi listrik dari hembusan angin luaran air conditioner Gian Villany Golwa; Fajar Anggara; Imam Hidayat
Jurnal Teknik Mesin Indonesia Vol. 18 No. 2 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i2.464

Abstract

The utilization of air conditioners (AC) will consume a lot of electricity in the world. According to the predictions of the International Energy Agency (IEA) electricity consumption for AC will be the main trigger for soaring world electricity demand in 2050. Data from the Central Statistics Agency (BPS) in March 2017 showed 7.98 percent of households in Indonesia use AC. The wind speed coming out of the condenser in an AC with a capacity of 0.5-2 PK has an average speed of 4.83 m/s. This research will test the potential electricity that can be generated from air blowing from an AC with 2 types of generator prototypes. Both types of generators will be tested directly on the AC exhaust unit. The test results show that with an average wind speed of 4.83 m/s, the vertical blade generator with 12 blades installed can produce up to 7 volts, and on the horizontal blade generator with 6 coils, each coil has 300 turns, the voltage is up to 14.82 Volts. The conclusion from this research is that the horizontal blade generator is sufficient to supply electricity to the battery before consumption.
Co-Authors Candra Bagus Prasetyo Dedik Romahadi Fajar Anggara Imam Hidayat Mahesh Kumar Maulana Abdul Jabar Tony Indra Kusuma Wiwit Suprihatiningsih