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All Journal RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi
Rifal, Moh
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Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Environmental Science Mechanical Engineering

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ANALISIS PENGARUH VARIASI SUDUT KEMIRINGAN TERHADAP OPTIMASI DAYA PANEL SURYA Pido, Rifaldo; Boli, Rahmat Hidayat; Rifal, Moh; Rauf, Wawan; Dera, Nurmala Shanti; Day, Randy Rianto
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 10 No. 2 (2022): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v10i2.287

Abstract

Abstrak: Analisis Pengaruh Variasi Sudut Kemiringan Terhadap Optimasi Daya Panel Surya. Di Gorontalo suhu atau temperature udara yang tinggi yang dapat mempengaruhi kinerja pada panel surya. Suhu udara di Gorontalo pada siang hari dapat menembus angka diatas 34°C dibandingkan suhu optimal operasi dari panel surya sendiri adalah 25°C. Rumusan masalah dalam penelitian ini adalah apakah ada pengaruh perubahan sudut sel surya terhadap intensitas cahaya. Sedangkan Tujuan dari penelitian ini adalah upaya mengoptimalkan output tegangan, arus dan daya pada sel surya agar lebih maksimal. Salah satu metode pengoptimalan sel surya adalah dengan memvariasikan sudut kemiringan panel surya 9˚, 12˚ dan 15˚. Metode pada penelitian ini dengan melakukan pengukuran besaran intensitas cahaya matahari, arus dan tegangan dengan menggunakan panel surya 50 WP, pengukuran tersebut dilakukan selama 9 hari. Hasil analisis pada penelitian ini adalah persentase peningkatan daya sebesar 43.85 Watt pada sudut kemiringan 15˚, sedangkan daya output mengalami penurunan pada sudut kemiringan 12˚ dan 9 ˚ yaitu 41.70 Watt dan 39.43 Watt. Secara keseluruhan perubahan arah sudut sel surya berpengaruh terhadap intensitas cahaya matahari yang berakibat pada kuat lemahnya tegangan yang diterima panel sel surya. Semakin besar intensitas cahaya yang diterima, maka semakin besar pula tegangan yang dihasilkan panel surya. Kata kunci: sel surya; intensitas cahaya; sudut azimuth; daya Abstrack: Analysis of the Effect of Tilt Angle Variations on Solar Panel Power Optimization. In Gorontalo the temperature or air temperature is high which can affect the performance of the solar panels. The air temperature in Gorontalo during the day can reach above 34°C compared to the optimal operating temperature of the solar panels themselves which is 25°C. The formulation of the problem in this study is whether there is an effect of changing the angle of the solar cell on the light intensity. While the purpose of this research is an effort to optimize the output voltage, current and power in solar cells to be more leverage. One method of optimizing solar cells is by varying the angle of inclination of the solar panels to 9˚, 12˚ and 15˚. The method in this study is to measure the intensity of sunlight, current and voltage using a 50 WP solar panel, the measurements were carried out for 9 days. The results of the analysis in this study are the percentage increase in power of 43.85 Watt at an angle of 15˚, while the output power decreases at an angle of 12˚ and 9˚, namely 41.70 Watt and 39.43 Watt. Overall changes in the direction of the solar cell angle affect the intensity of sunlight which results in the strength and weakness of the voltage received by the solar cell panel. The greater the intensity of light received, the greater the voltage generated by the solar panel. Kata kunci: solar cell; intensity of light; azimuth angle; power
KAJIAN PENGARUH KONTROL ALIRAN TERHADAP KOEFISIEN HAMBAT MODEL KENDARAAN Boli, Rahmad Hidayat; Rauf, Wawan; Rifal, Moh; Pido, Rifaldo
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 11 No. 1 (2023): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v11i1.355

Abstract

The characteristics of the airflow that is formed around the vehicle body affects the value of the resistance acting on the vehicle. When it reaches the rear edge of the vehicle, the flow undergoes a process of separation. So modification of the vehicle body design that is able to reduce the separation is urgently needed. Flow engineering around the vehicle body can be obtained by modifying the shape which is considered more aerodynamic. Meanwhile, flow engineering can also be obtained through the application of an active control system in areas that are considered to have the potential to initiate flow eddies on the rear side of the vehicle and have a major influence on the formation of flow separation. This research aims to examine the impact of the application of flow control blowing technique on the resistance of the modeled vehicle. The geometric angle of the front wall is determined to be 35°. The research uses a numerical computational approach with a standard k-epsilon as a turbulence model. The upstream velocity applied is 13.9 m/s, while the blowing velocity is set at 0.5 m/s. The research results prove that the application of blowing flow control has succeeded in minimizing the formation of wake structures and has the effect of delaying separation and has succeeded in reducing the aerodynamic drag coefficient to 9.3187%.
EFEK PENERAPAN KONTROL AKTIF BLOWING TERHADAP TARIKAN AERODINAMIKA MODEL KENDARAAN Rauf, Wawan; Rifal, Moh; Pido, Rifaldo; Boli, Rahmad Hidayat; Haris, Zulfikar Abd
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 11 No. 1 (2023): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v11i1.358

Abstract

Vehicle stability when driving is an issue that needs attention because it relates to comfort in driving and the effectiveness of fuel consumption. This is caused by the large aerodynamic drag force of the vehicle due to the structure of the air flow which flows regularly and experiences separation when it reaches the rear end point of the vehicle. This separation of the flows causes significant negative pressure on the rear window due to the return flow which does not follow the shape of the vehicle body. The purpose of this study was to analyze the effect of implementing active control of blowing type flow on vehicle models on aerodynamic drag. This study applies a numerical computational method with a modified Ahmed body model as the main object of research. The active blowing control is placed at the rear end of the model which is considered the initial separation area. Blowing speed was varied 0.2 m/s, 0.8 m/s, 1.5 m/s, and 2.0 m/s and was tested at an upstream speed of 16.7 m/s. Research results indicate that the application of active blowing control has succeeded in providing a delay in separation effect, reducing turbulence and reducing aerodynamic drag by 8-9%.
ANALISIS PENGARUH VARIASI SUDUT KEMIRINGAN TERHADAP OPTIMASI DAYA PANEL SURYA Pido, Rifaldo; Boli, Rahmat Hidayat; Rifal, Moh; Rauf, Wawan; Dera, Nurmala Shanti; Day, Randy Rianto
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 10 No. 2 (2022): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v10i2.287

Abstract

Abstrak: Analisis Pengaruh Variasi Sudut Kemiringan Terhadap Optimasi Daya Panel Surya. Di Gorontalo suhu atau temperature udara yang tinggi yang dapat mempengaruhi kinerja pada panel surya. Suhu udara di Gorontalo pada siang hari dapat menembus angka diatas 34°C dibandingkan suhu optimal operasi dari panel surya sendiri adalah 25°C. Rumusan masalah dalam penelitian ini adalah apakah ada pengaruh perubahan sudut sel surya terhadap intensitas cahaya. Sedangkan Tujuan dari penelitian ini adalah upaya mengoptimalkan output tegangan, arus dan daya pada sel surya agar lebih maksimal. Salah satu metode pengoptimalan sel surya adalah dengan memvariasikan sudut kemiringan panel surya 9˚, 12˚ dan 15˚. Metode pada penelitian ini dengan melakukan pengukuran besaran intensitas cahaya matahari, arus dan tegangan dengan menggunakan panel surya 50 WP, pengukuran tersebut dilakukan selama 9 hari. Hasil analisis pada penelitian ini adalah persentase peningkatan daya sebesar 43.85 Watt pada sudut kemiringan 15˚, sedangkan daya output mengalami penurunan pada sudut kemiringan 12˚ dan 9 ˚ yaitu 41.70 Watt dan 39.43 Watt. Secara keseluruhan perubahan arah sudut sel surya berpengaruh terhadap intensitas cahaya matahari yang berakibat pada kuat lemahnya tegangan yang diterima panel sel surya. Semakin besar intensitas cahaya yang diterima, maka semakin besar pula tegangan yang dihasilkan panel surya. Kata kunci: sel surya; intensitas cahaya; sudut azimuth; daya Abstrack: Analysis of the Effect of Tilt Angle Variations on Solar Panel Power Optimization. In Gorontalo the temperature or air temperature is high which can affect the performance of the solar panels. The air temperature in Gorontalo during the day can reach above 34°C compared to the optimal operating temperature of the solar panels themselves which is 25°C. The formulation of the problem in this study is whether there is an effect of changing the angle of the solar cell on the light intensity. While the purpose of this research is an effort to optimize the output voltage, current and power in solar cells to be more leverage. One method of optimizing solar cells is by varying the angle of inclination of the solar panels to 9˚, 12˚ and 15˚. The method in this study is to measure the intensity of sunlight, current and voltage using a 50 WP solar panel, the measurements were carried out for 9 days. The results of the analysis in this study are the percentage increase in power of 43.85 Watt at an angle of 15˚, while the output power decreases at an angle of 12˚ and 9˚, namely 41.70 Watt and 39.43 Watt. Overall changes in the direction of the solar cell angle affect the intensity of sunlight which results in the strength and weakness of the voltage received by the solar cell panel. The greater the intensity of light received, the greater the voltage generated by the solar panel. Kata kunci: solar cell; intensity of light; azimuth angle; power
KAJIAN PENGARUH KONTROL ALIRAN TERHADAP KOEFISIEN HAMBAT MODEL KENDARAAN Boli, Rahmad Hidayat; Rauf, Wawan; Rifal, Moh; Pido, Rifaldo
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 11 No. 1 (2023): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v11i1.355

Abstract

The characteristics of the airflow that is formed around the vehicle body affects the value of the resistance acting on the vehicle. When it reaches the rear edge of the vehicle, the flow undergoes a process of separation. So modification of the vehicle body design that is able to reduce the separation is urgently needed. Flow engineering around the vehicle body can be obtained by modifying the shape which is considered more aerodynamic. Meanwhile, flow engineering can also be obtained through the application of an active control system in areas that are considered to have the potential to initiate flow eddies on the rear side of the vehicle and have a major influence on the formation of flow separation. This research aims to examine the impact of the application of flow control blowing technique on the resistance of the modeled vehicle. The geometric angle of the front wall is determined to be 35°. The research uses a numerical computational approach with a standard k-epsilon as a turbulence model. The upstream velocity applied is 13.9 m/s, while the blowing velocity is set at 0.5 m/s. The research results prove that the application of blowing flow control has succeeded in minimizing the formation of wake structures and has the effect of delaying separation and has succeeded in reducing the aerodynamic drag coefficient to 9.3187%.
EFEK PENERAPAN KONTROL AKTIF BLOWING TERHADAP TARIKAN AERODINAMIKA MODEL KENDARAAN Rauf, Wawan; Rifal, Moh; Pido, Rifaldo; Boli, Rahmad Hidayat; Haris, Zulfikar Abd
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 11 No. 1 (2023): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v11i1.358

Abstract

Vehicle stability when driving is an issue that needs attention because it relates to comfort in driving and the effectiveness of fuel consumption. This is caused by the large aerodynamic drag force of the vehicle due to the structure of the air flow which flows regularly and experiences separation when it reaches the rear end point of the vehicle. This separation of the flows causes significant negative pressure on the rear window due to the return flow which does not follow the shape of the vehicle body. The purpose of this study was to analyze the effect of implementing active control of blowing type flow on vehicle models on aerodynamic drag. This study applies a numerical computational method with a modified Ahmed body model as the main object of research. The active blowing control is placed at the rear end of the model which is considered the initial separation area. Blowing speed was varied 0.2 m/s, 0.8 m/s, 1.5 m/s, and 2.0 m/s and was tested at an upstream speed of 16.7 m/s. Research results indicate that the application of active blowing control has succeeded in providing a delay in separation effect, reducing turbulence and reducing aerodynamic drag by 8-9%.
Co-Authors Boli, Rahmat Hidayat Day, Randy Rianto Dera, Nurmala Shanti Haris, Zulfikar Abd Rahmad Hidayat Boli Rauf, Wawan Rifaldo Pido