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ANALISIS KARAKTERISTIK ELEKTRIK AIR LAUT TERSARING SEBAGAI SUMBER ENERGI ALTERNATIF BERKELANJUTAN (SUSTAINABLE ENERGY) Edward Jannert; Gurum Ahmad Pauzi; Amir Supriyanto
Jurnal Teori dan Aplikasi Fisika Vol 6, No 2 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i2.1915

Abstract

The electrical characteristics of filtered seawater can be determined by using Cu-Zn electrode pairs. Seawater is filtered by using a 1 micron sediment filter. Measurement of electrical characteristics of water is carried out using a 3 watt DC LED load and when the load is removed. The electrolyte cell consists of 40 cells, which are arranged in series and parallel with 300 ml per cell. Tool testing is carried out for 144 hours with 6 times electrolyte filling every 24 hours. The test results show that the longer the tool is used, the more electrical characteristics produced will be decreasing. The produce of maximum voltage (Vbl) by seawater is not filtered with a series of 31.5 V. The produce of maximum power (P) by seawater is not filtered with a series of 101.1 mW. The produce of maximum illumination by seawater is not filtered with a series of 426.4 Lux, the duration of the light is 8 hours. Despite the produce of maximum illumination by filtered seawater with a series of 319.7 Lux series, the duration of the light is 11 hours.
ANALISIS LAJU KOROSI ELEKTRODE BAHAN Cu - Zn DENGAN METODE SACRIFICIAL ANODE PADA SISTEM ENERGI LISTRIK ALTERNATIF BERBASIS AIR LAUT Gurum Ahmad Pauzi; Latifah Kamalia; Sri Wahyu Suciati
Jurnal Teori dan Aplikasi Fisika Vol 6, No 2 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i2.1850

Abstract

In this study, the addition of aluminum (Al) and magnesium (Mg) at the zinc (Zn) electrode as the sacrifice anode in an alternative sea-based electrical energy system was carried out. The sacrifice anode method is used as a way to prevent the corrosion of Zn electrodes. There are 3 types of electrode treatments, namely Cu-Zn, Cu-ZnAl, and Cu-ZnMg. The tool is designed to have 20 cells arranged in series and given a load of 3 Watt LED lights. Tool testing is carried out for 72 hours with electrolyte replacement every 24 hours. The measurement results showed that the Cu-ZnMg electrode produced the highest power output compared to the Cu-Zn and Cu-ZnAl electrodes. The maximum value of power from the Cu-ZnMg electrode is 125.71 mW while the electrodes of Cu-Zn and Cu-ZnAl have maximum power values of 49.49 mW and 52.48 mW respectively. The value of the intensity of the light generated from the instrument shows that the greater the power released, the higher the intensity of light. The lowest corrosion rate was generated by the Cu-ZnMg electrode of 0.079 mm/year after 72 hours of testing. This shows that the addition of sacrificial anode metal with a higher potential electrode value can produce higher and longer electrical energy and a lower corrosion rate
Investigasi Geologi dan Geolistrik Untuk Menafsirkan Keberadaan Air Tanah Dangkal Di Ambarawa, Lampung Rustadi Rustadi; Gurum Ahmad Pauzi; Opik Taufik
Jurnal Teori dan Aplikasi Fisika Vol 6, No 1 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i1.1832

Abstract

East  Ambarawa  has  a  large  agricultural  land  prosfek  for  rice  cultivation.  Limitations  of irrigation facilities, caused land fields are only productive in the rainy season. Utilization of ground water to be an alternative to supporting water supply. For this purpose, a geoelectric survey has  been conducted to   map   the   presence   of   shallow   groundwater   in   three lines   with   random  positions  using  Pole-pole configurations.  Through  the  use  of  40  electrodes  with  a  total   length  of  200  m,  geoelectric image  is obtained  to  a  depth  of  70  m.  The  presence  of  ground  water  is interpreted  to  be  in sedimentary layers, at depths  of  12   -  50.  Underlying  sediment  layers  are  composed  of   igneous  rocks  that  correlate with the formed Kerawang hill.
Desain dan Modifikasi Sistem Elektrolit Air Laut Dengan Penambahan Bahan Alumina Muhammad Iqbal Yuliansyah; Gurum Ahmad Pauzi; Warsito Warsito
Jurnal Teori dan Aplikasi Fisika Vol 8, No 1 (2020): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v8i1.2303

Abstract

Telah direalisasikan sitem elektrolit berbasis air laut dengan penambahan variasi Alumina. Penelitian ini bertujuan untuk mengetahui alumina terhadap karakteristik tegangan dan arus yang dihasilkan. Variasi alumina yang digunakan yaitu sebanyak 2 gram dan 4 gram. Proses pengujian dilakukan menggunakan 40 buah sel elektrolit dengan sepasang Zn dalam tiap selnya. Waktu pengujian dilakukan selama 48 jam dengan pergantian elektrolit sebanyak 2 kali untuk tiap variasi alumina. Hasil pengujian relatif sama yaitu menghasilkan tegangan sebesar 26,9 volt elektroda Cu-dan arus sebesar 2,5 mA untuk tiap variasi alumina, sehingga diketahui bahwa alumina yang di berikan tidak memberikan perubahan yang signifikan terhadap hasil tegangan, dan arus.
Analisis Laju Korosi pada Sistem Energi Listrik Alternatif Berbasis Elektrolit Air Laut Sinta Setiani Pangestu; Gurum Ahmad Pauzi; Sri Wahyu Suciyati
Jurnal Teori dan Aplikasi Fisika Vol 6, No 1 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i1.1821

Abstract

It has been realized an instrument of generating electric power by using a series of Cu-Zn electrode and two different electrolyte types, that are pure seawaterand seawater that has been filtered and added sodium bicarbonate (NaHCO3). The instrument is designed  to do charging and discharging seawater electrolyte manually. Electrolyte cell consist of 20 cell with 20 pairs of copper and zinc electrodes arranged in series. The instrument measurements are measuring the illumination of LED 3 watts and mass of zinc electrode. The Instrument was testedfor 72 hours  with three times electrolyte charging every 24 hours. The result showed that the illumination were generated by instrument with both of electrolyte will decrease by time. The seawater was filtered and added NaHCO3 can turn on  3 wattsLED longer than the pure seawater.On the third day, corrosion rate of  zinc electrode with pure seawater electrolyte is 9 times higher than seawater was filtered and added NaHCO3.
Perancangan Instrumentasi Monitoring Kualitas Akustik Ruangan Berdasarkan Tingkat Tekanan Bunyi dan Waktu Dengung Agung Gumelar; Gurum Ahmad Pauzi; Arif Surtono
Jurnal Teori dan Aplikasi Fisika Vol 6, No 1 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i1.1835

Abstract

The room acoustic measurement based on the sound pressure level and reverberation time was done in Al-Wasi’I mosque in Lampung University. The measurement of sound pressure level and reverberation time used 8 microphones which were connected to the internal soundcard of a laptop with a multiplexer as a data selector, while the acquisition system and signal processing used Matlab r2014a. The measurements were conducted in 64 points distributed inside the room. The measurement results for sound pressure level showed an average of 61,95 dB. The data of sound contour showed differences in each measured point of no more than 6 dB so that the sound pressure was evenly distributed. The reverberation time measurement result was 3,03 seconds, where this reverberation time far from optimal reverberation time of 0,90 to 1,20 seconds. The overall of acoustic quality in the praying room of Al-Wasi’I mosque in Lampung University was not good because it did not meet a proper acoustic sound requirements.
Aplikasi Sensor TGS2620 dan MQ138 untuk Mendeteksi Kematangan Buah Durian Berbasis Raspberry Pi 3B Dewi Puspitasari; Arif Surtono; Sri Wahyu Suciyati; Gurum Ahmad Pauzi
Jurnal Teori dan Aplikasi Fisika Vol 9, No 2 (2021): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v9i2.2760

Abstract

Telah dilakukan penelitian dengan pengaplikasian sensor gas TGS 2620 dan MQ 138 untuk mendeteksi kematangan buah durian berbasis Raspberry Pi 3b. Penelitian ini dilakukan untuk menghasilkan alat deteksi tingkat kematangan buah durian. Durian diletakkan ke dalam ruang sampel yang berisi sensor gas. Metode klasifikasi yang digunakan untuk menentukan kematangan buah menggunakan K-Nearest Neighbor (KNN). Pengujian KNN dalam klasifikasi kematangan durian menggunakan sensor gas memiliki akurasi keseluruhan 91,07%.
Analisis Percepatan Getaran Tanah dan Tingkat Kerentanan Tanah di Daerah Lampung Septika Locita; Gurum Ahmad Pauzi; Amir Supriyanto
Jurnal Teori dan Aplikasi Fisika Vol 6, No 1 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i1.1824

Abstract

The measurement of peak ground acceleration and ground vulnerability index in Lampung area has been done. This study aims to analyze the acceleration of ground vibration and ground vulnerability index with soil types namely, entisol, inceptisol and ultisol. The tool used to perform the measurement is the vibration meter VB-8213. The results of the analysis show that changes in the acceleration value of ground vibration and ground vulnerability have the same pattern of change with distance. The further distance to the vibration source the acceleration value of ground vibration and ground vulnerability index will be smaller. The greatest vibration acceleration value is found in ultisole and inceptisol soil type. The smallest vibration acceleration value of the soil type is entisol. While the value of ground vulnerability index for all types of soil entisol, inceptisol and ultisol have relatively small ground vulnerability index.
Analisis Potensi Elektrik Berbagai Elektrolit Alam Sebagai Sumber Energi Terbarukan Giri Amirul Mukminin; Gurum Ahmad Pauzi; Warsito Warsito
Jurnal Teori dan Aplikasi Fisika Vol 6, No 1 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i1.1830

Abstract

The electrical characteristics of river  water, brackish water, swamp water, spring water, and rain water can be determined by using electrodes. The electrode pairs of this research are Cu-Zn and C-Zn electrode.  The electrical characteristics measurement of river water, brackish water, swamp water, spring water, and rain water are connected with a 1,2watt LED load and without load. The electrolyte cell consisted of 20 cell, which were arranged in series with a volume of ±200 ml per cell. The maximum current (I) which were produced by Cu-Zn electrode using brackish water is 1,58 mA;  river water is 0,8 mA; swamp water is 0,57 mA;spring water is 0,21 mA; and rain water is 0,01 mA. Meanwhile The maximum current (I) which were produced by C-Zn electrode using brackish water is 1,54 mA;  river water is 0,01 mA; swamp water is 0,8 mA;spring water is 0,26 mA; and rain water is 0,09 mA. The type of water that has the best electrical characteristic are brackish water with light intensity of 1192 lux and river water with light intensity of 121 lux.
PEMBERDAYAAN MASYARAKAT DALAM PEMANFAATAN LIMBAH LAMPU HEMAT ENERGI (LHE) SEBAGAI ALTERNATIF LAMPU EMERGENCY DENGAN TEKNIK JOULE THIEF Junaidi Junaidi; Agus Riyanto; Gurum Ahmad Pauzi; Arif Surtono
Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Vol 4 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jss.v4i2.157

Abstract

Pengabdian ini merupakan bentuk kegiatan pemberdayaan masyarakat dalam pemafaatan limbah lampu hemat energi (LHE) untuk pembuatan lampu emergency. Pembuatan lampu emergency dilakukan dengan metode JouleThief. Metode ini mampu meningkatkan daya listrik rendah dari sumber baterai 1,5 volt menjadi arus bolak-balik AC yang dapat menyalakan lampu LED. Peserta dalam kegiatan pengabdian kepada masyarakat ini adalah sekitar 32 orang. Setiap peserta pengabdian dibina tentang proses pemanfaatan limbah lampu LHE yang sudah tidak terpakai agar menjadi barang siap guna dan memiliki nilai jual ekonomis. Komponen yang digunakan dalam pembuatan lampu emergency semuanya diperoleh dari komponen dari bekas lampu LHE. Dengan kegiatan ini diharapkan masyarakat mitra menjadi paham tentang bagaimana memanfaatkan limbah yang sulit terurai menjadi barang siap jual. Hasil pengabdian menunjukkan bahwa pencapaian TIK sebelum kegiatan pengabdian pembuatan lampu emergency dengan teknik Joule Thief adalah 35,63%. Pencapaian TIK setelah kegiatan pengabdian pembuatan emergency adalah 80,94%. Dari hasil tersebut, terjadi peningkatan untuk masing-masing pencapaian TIK dengan rata-rata sebesar 45,31%.