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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 188 Documents
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Analysis The Effect of Solar Radiation on The Efficiency of PV Plant 50 kWp Rooftop UNPAM Viktor Abdul Rozak, Ojak; Tri Mulyadi, Rohmat; Nurfadilah, Hafidz
Journal of Renewable Energy and Mechanics Vol. 6 No. 02 (2023): REM VOL 6 NO 02 2023
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2023.12181

Abstract

The potential for solar energy in indonesia which is a tropical country is very large with an insolation of around 4.5 Kwh/m2/day. Solar energy in the form of radiation waves will affect the power generated by solar panels and the efficiency of solar panels in generating power. This study was conducted at PV plant pamulang university which has a total of 108 panels with 6 strings and 18 panels in each string. The data in this study were taken per string to see the difference of efficiency in each string. The main problem of this study is to find out how much power and efficiency generated by PV plant against solar radiation. The purpose of this study is to understand and analyze the effect of solar radiation on power and efficiency. The method used is a quantitative descriptive method using a seaward irradiance meter to measure the average daily radiation per string and isolarcloud software to retrieve data from the voltage and current per string. The data taken is then calculated using a formula and then described using tables. Study shows that heat from the weather will result in decreased efficiency and the results of the analysis for a day the average value of radiation is 544.19 w/m2, the average power is 4227.79 watt and the resulting average efficiency is 18.57%.
Perbandingan Efisiensi Inhibitor Organik dan Anorganik pada Penurunan Laju Korosi Material Radiator Hastuti, Kurnia; Argak Dwi Wandana; Yulianto, Dody; Dedikarni; Rahman, Jhonni; Anwar, Irwan
Journal of Renewable Energy and Mechanics Vol. 6 No. 02 (2023): REM VOL 6 NO 02 2023
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2023.12338

Abstract

Radiator adalah suatu sistem atau komponen yang berfungsi utuk menjaga supaya temperatur mesin dalam kondisi ideal. Inhibitor anorganik telah terbukti dapat menurunkan laju korosi namun memiliki efek negatif karena materialnya yang tidak ramah lingkungan dan bersifat racun. Berdasarkan hal tersebut maka penggunaan inhibitor anorganik perlu dibatasi. Pada penelitian ini akan dibandingkan efisiensi inhibitor organik dan anorganik dalam menurunkan laju korosi. Inhibitor anorganik yang digunakan adalah Natrium Kromat (Na2CrO4) dengan konsentrasi 0,5%, 0,7%, dan 0,9%. Sedangkan inhibitor organik adalah Minyak Biji Kapas dengan variasi konsentrasi yaitu 25%, 30% dan 35% dalam waktu perendaman 21 hari dalam setiap inhibitor. Selanjutnya akan diuji ketahanan korosinya dengan media air biasa. Hasil pengujian laju korosi natrium kromat terendah pada konsentrasi 0,9% dengan nilai 0,0815 mm/y (0,628%) dengan waktu 21 hari. Laju korosi terendah pada konsentrasi 25% dengan nilai 0,1614 mm/y (0,273%). Penelitian ini menunjukan efisiensi perbandingan terbaik masih di lihat pada inhibitor anorganik natrium kromat, setaiap konsentrasi laju korosi semakin rendah.
A Designing Automatization for Integration of Non-Consumable Cooking Oil and Biodiesel Reactor Static Mixer Type Fauziyah, Firda; Prihandono, Trapsilo
Journal of Renewable Energy and Mechanics Vol. 6 No. 02 (2023): REM VOL 6 NO 02 2023
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2023.12496

Abstract

Sistem deteksi ketidaklayakan minyak otomatis dikembangkan karena urgensinya membantu pengguna mengetahui kapan minyak goreng telah tidak layak untuk digunakan kembali dalam proses memasak dikarenakan faktor kesehatan. Parameter fisik berupa warna dan kekeruhan minyak dengan memanfaatkan sensor warna dan fotodioda dipilih dengan metode klasifikasi yang digunakan berupa komputasi Bayes. Dari penggunaan alat tersebut nantinya, dihasilkan minyak terdeteksi layak dan tidak layak. Minyak bekas yang dihasilkan dari proses memasak atau Used Cooking Oil (UCO) akan diproses menjadi bahan bakar baru yaitu biodiesel. Proses pembuatan biodiesel yang melibatkan reaksi transesterifikasi dilakukan dalam alat yang didalamnya terdapat pengaduk (mixer), dimana alat tersebut dikenal dengan reaktor. Penelitian ini bertujuan merancang integrasi kedua alat tersebut, sistem deteksi ketidaklayakan minyak dan reaktor biodiesel tipe static mixer.
EFFECT OF MIXTURE EUCALYPTUS OIL AND MAGNETIC FIELDS ON DROPLETS COMBUSTION PALM OIL ON FLAME BEHAVIOURS AND FLUE GAS EMISSIONS Perdana, Dony; Moh. Aris, Taufik
Journal of Renewable Energy and Mechanics Vol. 7 No. 01 (2024): REM VOL 7 NO 01 2024
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2024.14148

Abstract

This research has the purpose to determine and understand the role of repelling magnetic field and the variation of eucalyptus oil bio-additives on flame evolution and exhaust emissions in burning palm oil droplets. Presently, the requirement for energy is increasing, so people must look for alternative energy of fuels. Because the availability of fossil fuels cannot be renewed and their existence is increasingly depleting. This situation really forces us to develop vegetable oil as a new energy source, one of which is palm oil. This research method uses a direct testing method on palm oil which is given a variation of a mixture of eucalyptus oil bio-additives a droplet diameter of 0.3-0.4 mm at a thermocouple diameter of 0.12 mm with magnetic field strength of 10,000 Gauss and heated by heater component. This research has found that the role of repelling magnetic field N-N (north-north) and variations in eucalyptus oil bio-additives have a major influence on the evolution time of the flame. The mixture of 10% bio-additive produces the shortest flame time of 1600 milliseconds, the lowest flame height with a value of 5.74 mm, and the highest temperature of 894.25oC compared to other bio-additive variations. CO exhaust gas at 6% bio-additive produces the lowest value of 33 ppm while NOx exhaust gas at 10% bio-additive produces the lowest value of 545 ppm.
The Analysis Static of Chassis Robot Arm as Design Modification Induction Melting Furnace Machine Using FEA Method Eka Bima Saputra; Ahmad Zohari; Andriansyah; Wahyu Bambang Sulistyo
Journal of Renewable Energy and Mechanics Vol. 6 No. 02 (2023): REM VOL 6 NO 02 2023
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2023.14344

Abstract

Induction furnace is a metal melting furnace that uses heater. The high temperatures can cause work accidents if not carefully. The cause of work accidents, especially machines is had mistake when initially machine designed. An alternative solution is to make improvements the machine. The researcher made a robot arm design that functions to transfer melting products and reduce work accidents like being exposed to melted metal. The researcher’s purpose is to analyze the design static of robot arm as modification induction melting furnace machine. The method is to study previous research literature related to static simulation. Researchers use the SolidWork premium 2018 software which consists of stress (von mises), displacement, and FOS (factor of safety) calculations. Based on the static simulation results, it can be concluded that the highest values ​​of simulated stress (von mises) at 5N, 10N, and 15N loads were 13.926Mpa, 27.728Mpa, and 41.531Mpa which categorized as feasible because they were below yield strength value of 64.205Mpa. Simulation displacement, the design experienced the most significant deformation at 15N load with value of 0.337 mm. The FOS (factor of safety) value each loading were 4.610; 2.315; and 1.474 which fulfills the static load safety requirement 1.25.
A Review Of The Potential Of Calliandra As A Biomass Power Plant Desfitri, Erda; Bunga Karuni Putri; Salasabila, Citra; firdaus
Journal of Renewable Energy and Mechanics Vol. 8 No. 01 (2025): REM VOL 8 NO 01 2025
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2025.14910

Abstract

Massively the use of fossil energy makes the earth poisoned by pollution, and the environment is damaged due to the resulting waste. The existence of renewable energy such as biomass can be an existing solution. One example is the calliandra plant which can be useful in many ways. This paper uses the literature review method to show that Calliandra is not only used as livestock feed but could also be used as co-firing fuel as an electric source. Producing a heat of 4,200 kcal/kg so that the ideal calliandra for firewood or charcoal. Calliandra can be used as the co-firing material in the form of biochar with a pyrolysis process.
REVIEW OF GEOTHERMAL POTENTIAL IN INDONESIA AND THE IMPACT ON CLIMATE CHANGE IN THE FUTURE Desfitri, Erda; Ananta, Aling; Jones, Rivaldo
Journal of Renewable Energy and Mechanics Vol. 8 No. 02 (2025): REM VOL 8 No 02 2025
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Electricity is crucial at this time, but the challenge lies in reducing and replacing the use of fossil fuels, as continuous use will exacerbate climate change and harm the world. The best solution is to replace it with new renewable energy sources, such as geothermal energy, which has significant potential in Indonesia. The most considerable geothermal potential in the world is 29.038 MW. This paper uses the literature review method. The criteria for articles used as sources are research-type articles. The purpose of this article is to review the geothermal potential in Indonesia, which can be utilised and developed to reduce the use of fossil energy, which has negative impacts in the future, so that this potential can be used optimally.
A Review Of Sustainable Development Of Geothermal Energy Desfitri, Erda; Jones, Rivaldo; Ananta, Aling
Journal of Renewable Energy and Mechanics Vol. 8 No. 01 (2025): REM VOL 8 NO 01 2025
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2025.15253

Abstract

Renewable energy is certainly more environmentally friendly because it can reduce air pollution and environmental damage due to exploration. The costs incurred to produce energy are cheaper because the energy source is free. Electricity is important now, but the obstacle faced is how to reduce and replace fossil energy because if it is continuously used, it will hurt the world. The best solution is to replace it with new renewable energy, such as geothermal energy, which has great potential in Indonesia. This research was conducted using a qualitative descriptive research method. The data used in this study were taken through in-depth interviews with an expert and a literature study from various relevant sources. The data was collected through in-depth interviews based on the IAEA's Sustainable Development Energy Indicator framework, which Prof. Thierry Lefèvre simplified. The results of the in-depth interviews are then combined with relevant data and literature.
THE EFFECT OF ANNEALING TEMPERATURE ON THE TENSILE STRENGTH OF POLYLACTIC ACID FILAMENT PRINTED BY 3D PRINTER Wicaksono, Leo Hutri; Muhammad Ghazali Arrahim
Journal of Renewable Energy and Mechanics Vol. 7 No. 01 (2024): REM VOL 7 NO 01 2024
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2024.15914

Abstract

The development of the industrial world is getting faster from time to time. The manufacturing industry is one of the industries that is very developed, especially in the use of technology. Although there have been some studies on the tensile strength of PLA filaments however, it is not yet clear about the effect of annealing treatment on the tensile strength of PLA filaments from 3D printers. Therefore, this study was conducted to determine the effect of annealing temperature on the tensile strength of polylactic acid material printed by 3D printers. This research uses experimental methods with the following conditions: The filament used is polylactic acid (PLA), specimens are printed to ISO 527-2 standard and the annealing treatment temperature are 50⁰C and 70⁰C. From the results of testing and data analysis that has been carried out, it can be concluded that annealing treatment is quite influential on the tensile strength value of polylactic acid (PLA) materials. The greater the annealing temperature, the higher the tensile strength value. At 50⁰C annealing the average tensile strength value is 15.89 MPa, while at 70⁰C annealing the average tensile strength value is 16.66 MPa.
THE EFFECT OF FRICTION TIME VARIATIONS ON DISSIMILAR MATERIAL WELDING JOINTS AND HARDNESS VALUE USING A BAR-PLATE ROTARY FRICTION WELDING MACHINE Sinabutar, Jimmi pranata; Yohanes
Journal of Renewable Energy and Mechanics Vol. 7 No. 01 (2024): REM VOL 7 NO 01 2024
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2024.15916

Abstract

This research aims to determine the effect of variations in friction time on welded joints of dissimilar materials and hardness values. The method used is the friction welding method. One of the materials widely used in industrial products is mild steel AISI 1037 and stainless steel 304. One of the tools used is a bar-plate upright rotary friction welding machine. The parameters used are friction time variations of 25-35 seconds, 55-65 seconds and 115-125 seconds with a rotational speed of 2,484 rpm, friction pressure of 0.5 MPa, forging pressure of 0.7 MPa, forging time of 10 seconds. From the results of the connection several tests were carried out, namely liquid penetrant , macro observation and hardness test. The results of liquid penetrant testing and macro observations showed no influence on the welding area. The results of hardness testing have an influence on the hardness value. In the interface area, the friction time variation of 120 seconds has the highest hardness value of 161.67 VHN. The lowest hardness value in the interface area with a friction time variation of 30 seconds is 152.90 VHN. Where the longer the friction time, the hardness value also increases.

Page 17 of 19 | Total Record : 188

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