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INDONESIA
Journal of Renewable Energy and Mechanics
Published by Universitas Islam Riau
ISSN : 27146219     EISSN : 26148315     DOI : 10.25299
Core Subject : Social, Engineering,
Automotive Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences
REM is a peer-reviewed and open access journal that publishes significant and important research from area of Mechanical and Material Science and Development of Technology related with Mechanical Engineering. We accept submission from all over the world on English language. Our Editorial Board members are prominent and active researchers in renewable energy and mechanical engineering fields who ensure efficient, fair, and constructive peer-review process. All accepted articles will be published freely and available to all readers with worldwide visibility and coverage. REM (Journal of Renewable Energy and Mechanics) published periodically two times annually by Department of Mechanical Engineering, Faculty of Engineering, Universitas Islam Riau.
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Articles 5 Documents
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Search results for , issue "Vol. 3 No. 02 (2020): REM" : 5 Documents clear
PEMANFAATAN PANAS PADA DINDING KOMPOR GASIFIKASI BIOMASSA UNTUK PEMBANGKIT LISTRIK DC MENGGUNAKAN THERMOELECTRIC GENERATOR Dian Hadi Armansyah; Eddy Elfiano; Dody Yulianto
Journal of Renewable Energy and Mechanics Vol. 3 No. 02 (2020): REM
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (400.802 KB) | DOI: 10.25299/rem.2020.4287

Abstract

The stove is one technology that plays an important role in the utilization of energy at the household scale. The biomass stove studied was a blower system gasification stove. In the blower system, oxygen entering the combustion chamber flows continuously according to the needs of combustion. In this biomass gasification stove study, researchers will also use the biomass stove wall or thermal energy into kinetic energy for grinding blowers and charging systems. This study aims to obtain fuel by utilizing biomass or organic waste as biomass stove fuel and get the energy driving the blower and charging system by utilizing a thermoelectric generator system. biomass stoves used in this study use the principle method of Top-Lif Up Draft (T-LUD) Gasifier, a type of gasifier that matches the characteristics of biomass that has high volatile matter, where the stove is designed intended for biomass fuel from agricultural waste products and industry, boiling 1 kg of water is done using wood chips by varying the area of ​​the air flow door, which is 50%, 75%, and 100%. Can be analyzed Comparison of the performance of the biomass cooker stove and the power generated by the thermoelectric generator, at each door width of the air flow results are different, this is due to the mass of fuel consumption and fire temperature. After calculating the highest thermal efficiency results obtained in the area of ​​50% air flow ventilation and obtained power generated 1.83 watts with 100% ventilation flow door area using wood chips.
THE EFFECT OF FREQUENCY VARIATION ON DIELECTRIC CONSTANT OF RAPHIA HOOKERI Ubong Iboh; Ubong Robert; Grace Umoren; Uduakobong Okorie
Journal of Renewable Energy and Mechanics Vol. 3 No. 02 (2020): REM
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (266.977 KB) | DOI: 10.25299/rem.2020.4433

Abstract

This work sought to investigate the effect of varying the frequency of an applied electric field on the dielectric constant of raphia hookeri. The aim of the work was to ascertain the suitability of using the sample for engineering applications. It was revealed, from the recorded results, that the dielectric constant of the sample decays exponentially with frequency. Also, greater degree of polarisation was observed with decrease in frequency. Again, as a good thermal insulator, it was revealed that the values of the sample’s dielectric constant compared favourably with those of commonly used conventional dielectric materials. Thus, it is obvious that if put into production cycle, the sample can serve as a low-cost and environmentally friendly material suitable for engineering applications within audio frequency range. This will, in turn, help to provide raw material for electronic industry and also improve the economy.
PEMANFAATAN LIMBAH SERAT (FIBER) BUAH KELAPA SAWIT DAN PLASTIK DAUR ULANG (POLYPROPYLENE) SEBAGAI MATERIAL KOMPOSIT PAPAN PARTIKEL (PARTICLE BOARD) Arif Dedi Kurniawan
Journal of Renewable Energy and Mechanics Vol. 3 No. 02 (2020): REM
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (419.769 KB) | DOI: 10.25299/rem.2020.4884

Abstract

Limbah plastik dan serat buah kelapa sawit jumlah nya sangat besar di Indonesia jika jumlah plastik dan serat buah kelapa sawit terus meningkat dikhawatirkan akan memberikan dampak buruk bagi lingkungan, untuk itu perlu ada cara untuk menggunakan kembali limbah plastik dan serat buah kelapa sawit, alternatif yang dapat dilakukan yaitu dengan mengubah kedua bahan tersebut mejadi papan partikel, Penelitian ini bertujuan mengetahui kualitas dari papan komposit dalam hal ini sifat fisis dan mekanik (kerapatan, kadar air, pengembangan tebal, modulus elastisitas (MOE), dan modulus patah (MOR)). Dari serat buah sawit dengan perekat plastik daur ulang polypropylene. dengan perbedaan komposisi : 80% serat (filler) + 20% plastik (matriks) , 75% serat (filler) + 25% plastik (matriks), 70% serat (filler) + 30% plastik (matriks).dari hasil perhitungan diperoleh nilai uji kerapatan sebesar 0,71 , 0,73 dan 0,82 , kadar air sebesar 3,33 %, 2,25 % dan 3,77 %, pengembangan tebal sebesar 9 %, 13 % dan 14 %, modulus elastisitas 0,0455 (104 kgf/cm3) , 0,1519 (104 kgf/cm3) dan 0,1053 (104 kgf/cm3), modulus patah sebesar 67,2483 (kgf/cm3), 102,918 (kgf/cm3) dan 32,8493 (kgf/cm3), dari semua hasil pengujian hanya modulus elastisitas yang tidak memenuhi standar SNI 03-2105-2006
PERBANDINGAN EFEKTIVITAS SUDUT PENUTUP 450 DAN 600 PADA DOUBLE SLOPE SOLAR DESTILASI SEBAGAI PENYEDIA AIR BERSIH Ni Ketut Caturwati
Journal of Renewable Energy and Mechanics Vol. 3 No. 02 (2020): REM
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (610.877 KB) | DOI: 10.25299/rem.2020.5176

Abstract

Air Bersih merupakan kebutuhan pokok manusia dalam memenuhi kebutuhan hidupnya. Banyak cara yang dapat digunakan dalam menjernihkan air, salah satunya menggunakan alat distilasi surya. Alat Distilasi Surya merupakan alat sederhana dalam membantu masyarakat menjernihkan air dengan menggunakan energi Matahari. Banyak modifikasi desain alat yang dapat dilakukan, salah satunya adalah dengan memodifikasi sudut penutup kaca untuk meningkatkan produktivitas alat distilasi. Inilah yang menjadi tujuan dari penelitian ini, yakni untuk mengetahui kinerja dan efisiensi alat ketika sudut penutup kaca diubah dan ketika sudut berapakah efisiensinya bagus. Metode penelitian yang digunakan adalah metode eksperimental yaitu melakukan pengamatan untuk mencari data sebab akibat dalam suatu dalam suatu proses melalui eksperimen sehingga dapat mengetahui pengaruh kemiringan sudut penutup kaca distilstor surya terhadap produksi air kondensat. Didalam penelitian ini, hasil maksimal kondensat yang diperoleh dari pengujian antara sudut cover 600 dengan 450 adalah sebesar 1133 mililiter yang dihasilkan oleh penggunaan sudut cover 450 dengan rata-rata efisiensi alat 40,07 %.
THE FUSION EFFECT OF COMPUTED RADIOGRAPHY IMAGE OF WELDING PLATE DIFFERENT IN POWER TO ITS IMAGE QUALITY Tengku Mohammad Yoshandi
Journal of Renewable Energy and Mechanics Vol. 3 No. 02 (2020): REM
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.155 KB) | DOI: 10.25299/rem.2020.5225

Abstract

Instrument testing which is done is indutries are one of method to maintain the primary condition of insrument with purpose to prevent damage on instrument which will cause accident of death. Testing conducted using non-destructive technique or NDT, which is one of testing which not leave any damage or harm to the test speciment. Non-destructive testing in industry is levelling up to digital display. This digital radiography using image plate instead of film. In this research, computed radiography invarious energy and curent is used. Voltage and current are factors that give effect to the resulting image. Voltage give effect to contrast, contrast increase the number of x-ray emmit from the x-ray tube, which is higher the current make the noise higher to image. In this study, the important parameters are voltage and current. Exposure distant and time are 100 cm and 1 minute. With these distant and time, the speciment which 17 mm thick being exposed to the radiation with various energy and current which is 160 kV, 180 kV, and 200 kV, 3 mA, 5 mA, and 10 mA. The resulting images are analyzed with iSee! and image fusion using MATLAB. Simple fusion method is the simplest way of fusing the image which done by the pixel selection, or with extraction. Image that been fused divided by two, which is the fused image with the same voltage but different current and vice versa. The comparison is done by determined the SNR in image with iSee!. After fusion, the SNR is increase which mean the increase of image quality

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