Pub Date : 2023-09-30DOI: 10.25299/rem.2023.vol6.no02.12496
Firda Fauziyah, Trapsilo Prihandono
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.
{"title":"A Designing Automatization for Integration of Non-Consumable Cooking Oil and Biodiesel Reactor Static Mixer Type","authors":"Firda Fauziyah, Trapsilo Prihandono","doi":"10.25299/rem.2023.vol6.no02.12496","DOIUrl":"https://doi.org/10.25299/rem.2023.vol6.no02.12496","url":null,"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.","PeriodicalId":33715,"journal":{"name":"Journal of Renewable Energy and Mechanics","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136344489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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.
{"title":"Perbandingan Efisiensi Inhibitor Organik dan Anorganik pada Penurunan Laju Korosi Material Radiator","authors":"Kurnia Hastuti, None Argak Dwi Wandana, Dody Yulianto, None Dedikarni, Jhonni Rahman, Irwan Anwar","doi":"10.25299/rem.2023.vol6.no02.12338","DOIUrl":"https://doi.org/10.25299/rem.2023.vol6.no02.12338","url":null,"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.","PeriodicalId":33715,"journal":{"name":"Journal of Renewable Energy and Mechanics","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136344613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-30DOI: 10.25299/rem.2023.vol6.no02.10479
Yopi Rusdian Santoso, Lathifa Putri Afisna, Muhammad Syaukani, Gita Johannes Saragih
The traditional drying method has many weaknesses, namely it is very dependent on the weather, so that drying takes a long time. Traditional drying methods result in frequent contamination of dust, dirt, insects, and if wet they are prone to moss growth due to delays in drying during cloudy or rainy weather. This study designed a coffee bean dryer with electric power which is the result of converting solar energy with the help of photovoltaic which is first stored in the battery. The main components of this tool are: drying chamber, drying roof, tray, thermostat, heating element, this test is carried out to determine changes in seed moisture content, required power and efficiency. The temperature is set at 50°C with a fan speed of 3m/s. The fastest decrease in water content occurred in the mass of 1 kg coffee bean samples starting on June 22, 2022 from 28.5% water content to 12% moisture content. Meanwhile, the longest decrease in the water content of coffee beans was at a mass of 2 kg coffee beans on June 24, 2022, the initial water content of coffee beans was 29.3% to 13.2%. The greater the mass of the coffee beans to be dried, the greater the time required to dry the coffee beans using a dome dryer. The maximum power is in the Sukmailang area, Pesawaran district which has a plateau as high as 1200 meters above sea level (MDPL) with an average power of 11.38 Watt. The highest power is produced at 12:00 WIB with a value of 16.49 Watts. The use of solar panels in the Sukmailang area, Pesawaran Regency which has a plateau as high as 1200 (MDPL) is still not effectively utilized because the results obtained have an average efficiency value of 2.22%
{"title":"Experimental Study of The Potential for Energy Absorption and Drying Time of Coffee Beans Using a Dome Dryer Type Dryer in The Sukmailang Area of Pesawaran Regency","authors":"Yopi Rusdian Santoso, Lathifa Putri Afisna, Muhammad Syaukani, Gita Johannes Saragih","doi":"10.25299/rem.2023.vol6.no02.10479","DOIUrl":"https://doi.org/10.25299/rem.2023.vol6.no02.10479","url":null,"abstract":"The traditional drying method has many weaknesses, namely it is very dependent on the weather, so that drying takes a long time. Traditional drying methods result in frequent contamination of dust, dirt, insects, and if wet they are prone to moss growth due to delays in drying during cloudy or rainy weather. This study designed a coffee bean dryer with electric power which is the result of converting solar energy with the help of photovoltaic which is first stored in the battery. The main components of this tool are: drying chamber, drying roof, tray, thermostat, heating element, this test is carried out to determine changes in seed moisture content, required power and efficiency. The temperature is set at 50°C with a fan speed of 3m/s. The fastest decrease in water content occurred in the mass of 1 kg coffee bean samples starting on June 22, 2022 from 28.5% water content to 12% moisture content. Meanwhile, the longest decrease in the water content of coffee beans was at a mass of 2 kg coffee beans on June 24, 2022, the initial water content of coffee beans was 29.3% to 13.2%. The greater the mass of the coffee beans to be dried, the greater the time required to dry the coffee beans using a dome dryer. The maximum power is in the Sukmailang area, Pesawaran district which has a plateau as high as 1200 meters above sea level (MDPL) with an average power of 11.38 Watt. The highest power is produced at 12:00 WIB with a value of 16.49 Watts. The use of solar panels in the Sukmailang area, Pesawaran Regency which has a plateau as high as 1200 (MDPL) is still not effectively utilized because the results obtained have an average efficiency value of 2.22%","PeriodicalId":33715,"journal":{"name":"Journal of Renewable Energy and Mechanics","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136344627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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.
{"title":"The Analysis Static of Chassis Robot Arm as Design Modification Induction Melting Furnace Machine Using FEA Method","authors":"None Eka Bima Saputra, None Ahmad Zohari, None Andriansyah, None Wahyu Bambang Sulistyo","doi":"10.25299/rem.2023.vol6.no02.14344","DOIUrl":"https://doi.org/10.25299/rem.2023.vol6.no02.14344","url":null,"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.","PeriodicalId":33715,"journal":{"name":"Journal of Renewable Energy and Mechanics","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136344773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-30DOI: 10.25299/rem.2023.vol6.no02.12181
Ojak Abdul Rozak, Rohmat Tri Mulyadi, Hafidz Nurfadilah
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%.
{"title":"Analysis The Effect of Solar Radiation on The Efficiency of PV Plant 50 kWp Rooftop UNPAM Viktor","authors":"Ojak Abdul Rozak, Rohmat Tri Mulyadi, Hafidz Nurfadilah","doi":"10.25299/rem.2023.vol6.no02.12181","DOIUrl":"https://doi.org/10.25299/rem.2023.vol6.no02.12181","url":null,"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%.","PeriodicalId":33715,"journal":{"name":"Journal of Renewable Energy and Mechanics","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136344502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-29DOI: 10.25299/rem.2023.vol6.no02.11972
Hernawan Novianto, None Sujono
Fire pump is a pump that is used to move water from the firewater reservoir to the location of the fire. If there is damage to this pump, the fire that occurs cannot be resolved quickly so that the impact of damage caused by fire becomes more widespread. Various problems can occur in the operation of the pump, one of which is damage to the bearings and shaft, noise occurs, decreased capacity, and even a decrease in pump efficiency. So to prevent the risk of greater damage and minimize losses in terms of cost and time, it is necessary to carry out maintenance. One of the efforts to detect damage to the pump is by vibration analysis, where from the vibration characteristics that occur, the type of damage can be determined. The purpose of this study was to determine the vibration characteristics that occur in the PEM Akamigas Cepu fire pump, by monitoring conditional vibrations using a vibration analyzer. The method is to attach the transducer to a predetermined location to determine the vibration spectrum that occurs in the axial, radial and tangential directions, then analyze the type of damage so that appropriate maintenance actions can be taken. As a result, this pump is indicated to be experiencing extreme looseness or bearing clearance problems at the pump drive end and pump non drive end as well as experiencing moderate pump imbalance, so it needs to be repaired immediately to avoid more serious damage.
{"title":"Vibration Analysis of Fire Pump of PEM Akamigas Cepu: A Case Study","authors":"Hernawan Novianto, None Sujono","doi":"10.25299/rem.2023.vol6.no02.11972","DOIUrl":"https://doi.org/10.25299/rem.2023.vol6.no02.11972","url":null,"abstract":"Fire pump is a pump that is used to move water from the firewater reservoir to the location of the fire. If there is damage to this pump, the fire that occurs cannot be resolved quickly so that the impact of damage caused by fire becomes more widespread. Various problems can occur in the operation of the pump, one of which is damage to the bearings and shaft, noise occurs, decreased capacity, and even a decrease in pump efficiency. So to prevent the risk of greater damage and minimize losses in terms of cost and time, it is necessary to carry out maintenance. One of the efforts to detect damage to the pump is by vibration analysis, where from the vibration characteristics that occur, the type of damage can be determined. The purpose of this study was to determine the vibration characteristics that occur in the PEM Akamigas Cepu fire pump, by monitoring conditional vibrations using a vibration analyzer. The method is to attach the transducer to a predetermined location to determine the vibration spectrum that occurs in the axial, radial and tangential directions, then analyze the type of damage so that appropriate maintenance actions can be taken. As a result, this pump is indicated to be experiencing extreme looseness or bearing clearance problems at the pump drive end and pump non drive end as well as experiencing moderate pump imbalance, so it needs to be repaired immediately to avoid more serious damage.","PeriodicalId":33715,"journal":{"name":"Journal of Renewable Energy and Mechanics","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135294764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Air bersih sangat dibutuhkan untuk masyarakat yang tinggal didaerah padat penduduk. Kelangkaan dan kesulitan untuk mendapatkan air bersih menjadi permasalahan yang banyak muncul dikalangan masyarakat dimana hampir sebagian besar sumber air tanah yang didapat adalah air keruh. Sumber air yang ada sudah terkontaminasi dengan tanah, logam berat, bakteri dan bahan lain yang merugikan kesehatan. Untuk mengatasi permasalahan air keruh tersebut perlu adanya usaha untuk mendapatkan sumber air yang bersih dengan menggunakan alat yang disebut dengan Destilator Surya Tipe Wick Sollar Still dengan penambahan reflektor. Untuk mengetahui pengaruh sudut reflektor pada unjuk kerja destilator surya. Kemudian mendapatkan sudut reflektor yang memiliki unjuk kerja destilator surya yang paling baik. Alat ini berfungsi sebagai pengubah air keruh menjadi air bersih siap pakai dengan cara menguapkan dengan memanfaatkan energi panas matahari. Dalam pengujian destilator menggunakan 5 variasi sudut reflektor 55°,58°,60°,62°,65°. Sudut reflektor memiliki pengaruh terhadap unjuk kerja destilator surya tipe wick sollar still dimana semakin besar sudut reflektor maka unjuk kerja nya semakin baik. Destilator surya tipe wick sollar still yang memiliki unjuk kerja terbaik terdapat pada sudut reflektor 65° dimana diperoleh energi penguapan yang paling tinggi sebesar 37,48 watt. Kemudian diperoleh energi pengembunan yang paling tinggi sebesar 37,48 watt. Lalu diperoleh laju destilasi yang paling tinggi sebesar 0,0000158 kg⁄s. Kemudian diperoleh efisiensi produk yang paling tinggi sebesar 8%. Kemudian diperoleh efisiensi sistem destilasi yang paling tinggi sebesar 10,4% dan diperoleh kuantitas air destilasi yang paling tinggi sebesar 400 ml.
{"title":"The Effect of Reflector Angle Variations on The Performance of Solar Destilators of Wick Solar Still Type","authors":"Sabarianto, Sehat abdi saragih, Irwan Anwar, Jhonni Rahman","doi":"10.25299/rem.2023.vol6.no01.10551","DOIUrl":"https://doi.org/10.25299/rem.2023.vol6.no01.10551","url":null,"abstract":"Air bersih sangat dibutuhkan untuk masyarakat yang tinggal didaerah padat penduduk. Kelangkaan dan kesulitan untuk mendapatkan air bersih menjadi permasalahan yang banyak muncul dikalangan masyarakat dimana hampir sebagian besar sumber air tanah yang didapat adalah air keruh. Sumber air yang ada sudah terkontaminasi dengan tanah, logam berat, bakteri dan bahan lain yang merugikan kesehatan. Untuk mengatasi permasalahan air keruh tersebut perlu adanya usaha untuk mendapatkan sumber air yang bersih dengan menggunakan alat yang disebut dengan Destilator Surya Tipe Wick Sollar Still dengan penambahan reflektor. Untuk mengetahui pengaruh sudut reflektor pada unjuk kerja destilator surya. Kemudian mendapatkan sudut reflektor yang memiliki unjuk kerja destilator surya yang paling baik. Alat ini berfungsi sebagai pengubah air keruh menjadi air bersih siap pakai dengan cara menguapkan dengan memanfaatkan energi panas matahari. Dalam pengujian destilator menggunakan 5 variasi sudut reflektor 55°,58°,60°,62°,65°. Sudut reflektor memiliki pengaruh terhadap unjuk kerja destilator surya tipe wick sollar still dimana semakin besar sudut reflektor maka unjuk kerja nya semakin baik. Destilator surya tipe wick sollar still yang memiliki unjuk kerja terbaik terdapat pada sudut reflektor 65° dimana diperoleh energi penguapan yang paling tinggi sebesar 37,48 watt. Kemudian diperoleh energi pengembunan yang paling tinggi sebesar 37,48 watt. Lalu diperoleh laju destilasi yang paling tinggi sebesar 0,0000158 kg⁄s. Kemudian diperoleh efisiensi produk yang paling tinggi sebesar 8%. Kemudian diperoleh efisiensi sistem destilasi yang paling tinggi sebesar 10,4% dan diperoleh kuantitas air destilasi yang paling tinggi sebesar 400 ml.","PeriodicalId":33715,"journal":{"name":"Journal of Renewable Energy and Mechanics","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89893102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-30DOI: 10.25299/rem.2023.vol6.no01.10905
J. Pratilastiarso, L. Diana, Nu Rhahida Arini, Faris Hilmi Kurniawan, Firdaus Fhudoli Putra
This study simulated the characteristics of the fluid flow that passes through the Darrieus turbine before installation and testing were carried out. The purpose of knowing the flow characteristics can determine the profile and position of the maximum speed so that the design and placement of the turbine can be improved. The research method was carried out using dynamic fluid computational simulations in three-dimensional form with steady state conditions, discretization using second-order, with convergent conditions when it reached 10-6. The simulation results show that the position of the flow above the turbine had the lowest value because the fluid flowed relatively without disturbance which caused the velocity to had a value almost the same as the incoming fluid velocity. The fluid velocity increased when it was in line 2 and line 3 or across the turbine. This was due to the turbulence generated by the rotation of the turbine. While the speed on line 4 or below the turbine had a lower value than line 2 and line 3. This was due to the position below the turbine so that the turbine rotation did not have an impact on speed. At the four line positions the velocity increased at Y=0.7 m or when the fluid hits the turbine. This increase in fluid velocity was expected to turn the turbine. The results also included the flow distribution in the form of a streamline in several positions where the flow that was in contact with the channel wall had a low velocity value due to friction with the wall.
{"title":"Analysis of Fluid Flow Characteristics Across the Darrieus Turbine in Irrigation Channels","authors":"J. Pratilastiarso, L. Diana, Nu Rhahida Arini, Faris Hilmi Kurniawan, Firdaus Fhudoli Putra","doi":"10.25299/rem.2023.vol6.no01.10905","DOIUrl":"https://doi.org/10.25299/rem.2023.vol6.no01.10905","url":null,"abstract":"This study simulated the characteristics of the fluid flow that passes through the Darrieus turbine before installation and testing were carried out. The purpose of knowing the flow characteristics can determine the profile and position of the maximum speed so that the design and placement of the turbine can be improved. The research method was carried out using dynamic fluid computational simulations in three-dimensional form with steady state conditions, discretization using second-order, with convergent conditions when it reached 10-6. The simulation results show that the position of the flow above the turbine had the lowest value because the fluid flowed relatively without disturbance which caused the velocity to had a value almost the same as the incoming fluid velocity. The fluid velocity increased when it was in line 2 and line 3 or across the turbine. This was due to the turbulence generated by the rotation of the turbine. While the speed on line 4 or below the turbine had a lower value than line 2 and line 3. This was due to the position below the turbine so that the turbine rotation did not have an impact on speed. At the four line positions the velocity increased at Y=0.7 m or when the fluid hits the turbine. This increase in fluid velocity was expected to turn the turbine. The results also included the flow distribution in the form of a streamline in several positions where the flow that was in contact with the channel wall had a low velocity value due to friction with the wall.","PeriodicalId":33715,"journal":{"name":"Journal of Renewable Energy and Mechanics","volume":"104 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79205255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-30DOI: 10.25299/rem.2023.vol6.no01.10763
Fahrur Aslami, Elysa Nensy Irawan, Mohammad Muntaha, Suyatno, Mochamad Sahal
This research was conducted to determine the potential for wind power from the Tamiang Bay area, Kotabaru, South Kalimantan. This study uses data on the average daily wind speed in Tamiang Bay with latitude -4.058883°, longitude 116.050259° obtained from the European Center for Medium-Range Weather Forecasts (ECMWF). Based on the analysis that has been done, the average daily wind speed in Tamiang Bay is 4 m/s for a height of 10 m and 5.98 m/s for a height of 50 m. Through the assumption that using a Gamesa G114-2.5 MW wind turbine with a tower height of 80 m, in one year, the Tamiang Bay area has the potential to produce 2646.58 MWh of wind power. Thus, the Tamiang Bay area is said to be very potential for wind power development.
{"title":"Analysis of Wind Power Potential in Samiang Bay, Kotabaru, South Kalimantan","authors":"Fahrur Aslami, Elysa Nensy Irawan, Mohammad Muntaha, Suyatno, Mochamad Sahal","doi":"10.25299/rem.2023.vol6.no01.10763","DOIUrl":"https://doi.org/10.25299/rem.2023.vol6.no01.10763","url":null,"abstract":"This research was conducted to determine the potential for wind power from the Tamiang Bay area, Kotabaru, South Kalimantan. This study uses data on the average daily wind speed in Tamiang Bay with latitude -4.058883°, longitude 116.050259° obtained from the European Center for Medium-Range Weather Forecasts (ECMWF). Based on the analysis that has been done, the average daily wind speed in Tamiang Bay is 4 m/s for a height of 10 m and 5.98 m/s for a height of 50 m. Through the assumption that using a Gamesa G114-2.5 MW wind turbine with a tower height of 80 m, in one year, the Tamiang Bay area has the potential to produce 2646.58 MWh of wind power. Thus, the Tamiang Bay area is said to be very potential for wind power development.","PeriodicalId":33715,"journal":{"name":"Journal of Renewable Energy and Mechanics","volume":"99 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85781734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-30DOI: 10.25299/rem.2023.vol6.no01.12053
Zoel Fachri, Rouhillah, Muharrir Alwathani
Soybeans are one of the main ingredients for making tempeh. Most of the tempeh production businesses still use the traditional system of washing soybeans. Washing soybeans is still done manually using a washing drum filled with water and stirred by hand, thus draining the workforce. In the process of washing soybeans, there is still direct contact with parts of the human body, resulting in unhygienic soybeans. From these problems, the solution is to make a machine that can wash soybeans in tempeh production which aims to facilitate washing soybeans and produce clean and hygienic soybeans. The soybean washing machine process uses a screw conveyor system with an AC motor 1 phase 1 HP 1420 Rpm as a driving force and a DC 12 V 25 W water pump to drain water into the watering canal. The machine can wash 5 kg of soybeans for 10 seconds, and produces a motor rotation of 271.2 Rpm, voltage 229 V, current 2.58 A to produce clean and hygienic soybeans.
大豆是制作豆豉的主要原料之一。大多数豆豉生产企业仍然使用传统的大豆洗涤系统。大豆的洗涤仍然是手工进行的，使用装满水的洗涤桶，并用手搅拌，从而消耗了劳动力。在清洗大豆的过程中，仍有与人体直接接触的部位，造成大豆不卫生。从这些问题出发，解决的办法是制造一种豆豉生产中可以清洗大豆的机器，目的是为了方便清洗大豆，生产出干净卫生的大豆。大豆洗涤机工艺采用螺旋输送机系统，以交流电机1相1 HP 1420 Rpm为动力，直流12v 25w水泵将水排入浇灌渠。该机可洗涤5公斤大豆10秒，电机转速271.2转，电压229 V，电流2.58 a，生产出清洁卫生的大豆。
{"title":"Design & Development of a Screw Conveyor-Based Soybean Washing Machine for Tempeh Production","authors":"Zoel Fachri, Rouhillah, Muharrir Alwathani","doi":"10.25299/rem.2023.vol6.no01.12053","DOIUrl":"https://doi.org/10.25299/rem.2023.vol6.no01.12053","url":null,"abstract":"Soybeans are one of the main ingredients for making tempeh. Most of the tempeh production businesses still use the traditional system of washing soybeans. Washing soybeans is still done manually using a washing drum filled with water and stirred by hand, thus draining the workforce. In the process of washing soybeans, there is still direct contact with parts of the human body, resulting in unhygienic soybeans. From these problems, the solution is to make a machine that can wash soybeans in tempeh production which aims to facilitate washing soybeans and produce clean and hygienic soybeans. The soybean washing machine process uses a screw conveyor system with an AC motor 1 phase 1 HP 1420 Rpm as a driving force and a DC 12 V 25 W water pump to drain water into the watering canal. The machine can wash 5 kg of soybeans for 10 seconds, and produces a motor rotation of 271.2 Rpm, voltage 229 V, current 2.58 A to produce clean and hygienic soybeans. \u0000 \u0000 \u0000","PeriodicalId":33715,"journal":{"name":"Journal of Renewable Energy and Mechanics","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75164305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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