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Pengaruh Airfoil dan Jumlah Sudu pada Perancangan Vertikal Axis Wind Turbine (VAWT) untuk Kecepatan Angin Rendah Sholichan, Sholichan; Uyun, Aep Saepul; Novianto, Bangun; Fitriani, Fitriani; Ibrahim, Riki Firmandha; Sugiyanto, Didik
JURNAL KAJIAN TEKNIK MESIN Vol 8, No 1 (2023): Jurnal Kajian Teknik Mesin
Publisher : Universitas 17 Agustus 1945 Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52447/jktm.v8i1.6681

Abstract

AbstrakSelain potensi angin karena bentuk geografisnya, Indonesia juga memiliki potensi angin yang dapat dimanfaatkan dari  pergerakan arus lalu lintas di jalan raya atau jalan tol. Pergerakan kendaraan  berkecepatan tinggi di jalan raya menghasilkan angin lokal, yang  dapat digunakan untuk menghasilkan energi listrik. Angin lokal ini memiliki variabilitas yang lebih kecil, terutama jika lalu lintas  jalan raya  konstan. Tujuan utama dari penelitian ini adalah untuk mendesain Vertical Axis Wind Turbine yang dapat bekerja pada kecepatan angin rendah. Pada pendekatan teoritis, software Qblade digunakan  untuk menganalisa beberapa jenis Airfoil yaitu NACA 0012, NACA 0013, NACA 0014, NACA 0015, NACA 0016 dengan variasi sudu 2, 3 dan 4 angka pada masing-masing konfigurasi aerodinamis. Koefisien performa turbin angin sumbu vertikal yang optimal dapat diperoleh pada simulasi turbin yang menggunakan airfoil NACA 0016 sebesar 1,33 dengan konfigurasi jumlah sudu adalah empat buah pada TSR 3,5 sehingga diperoleh daya sebesar 87,78 watt pada kecepatan angin 5 m/s dan kecepatan putar 300 rpm. Kata kunci: VAWT, Darrieus, Qblade  AbstractApart from wind potential due to its geographical shape, Indonesia also has wind potential which can be exploited from the movement of traffic flow on highways or toll roads. The movement of high-speed vehicles on the highway generates local wind, which can be used to generate electrical energy. These local winds have less variability, especially if road traffic is constant. The main objective of this research is to design a vertical axis wind turbines to operate in low wind speed. In the theoretical approach, Qblade software is used to analyze several types of airfoils, namely NACA 0012, NACA 0013, NACA 0014, NACA 0015, NACA 0016 with 2, 3 and 4 number blade variations on each aerodynamic configuration. The optimal vertical axis wind turbine performance coefficient can be obtained in a turbine simulation that uses a NACA 0016 airfoil of 1.33 with a configuration of four blades at a TSR of 3.5 so that a power of 87.78 watts is obtained at a wind speed of 5 m/s and rotating speed 300rpm. Keywords: VAWT, Darrieus, Qblade  
Analysis of the Application of the Hirarc Method (Hazard Identification Risk Assessment and Risk Control) in Potential Hazard Identification Activities in the Healthy Stevia Sugar Making Process at PT Tri Arga Makmur Sentosa Sulandari, Uci; Winda Lestari, Putri; Mumpuni Ngesti Rahaju, Sri; Dewi Dyah Maharani, Maya; Basri, Hasan; Munawir, Abdillah; Istoni, Reza; Sugiyanto, Didik
ASTONJADRO Vol. 13 No. 2 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

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Abstract

The still high level of work accidents requires companies to implement work safety and health programs to prevent work accidents. HIRADC (Hazard Identification, Risk Assessment, And Determining Control) is one of the K3 programs which consists of a series of activities to identify potential hazards and risks and provide appropriate control efforts according to the level of hazard risk. Based on the results of determining the risk level, there are 7 process activities with 2 types of risk. In each process activity, 5 (71%) hazard risks are included in the moderate category, and 2 (29%) hazard risks are included in the acceptable category.
PENINGKATAN KUALITAS PRODUKSI BUDIDAYA UDANG VANAME MELALUI PENYIAPAN PAKAN DAN DIGITALISASI MONITORING AIR TAMBAK SERTA MANAJEMEN PEMASARAN DI DESA SINDANGLAYA, KABUPATEN SERANG Sugiyanto, Didik; Aulia, Aisa; Antasti, Erico; Esye, Yendi; Rahaju, Sri Mumpuni Ngesti; Sulandari, Uci; Munandar, Agus
Jurnal Abdi Insani Vol 12 No 1 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i1.2026

Abstract

The Vaname Shrimp Cultivation Group of Sindanglaya Village, Cinangka District, Serang Regency - Banten which is currently in the form of a cooperative with the name of the Tunas Harapan Core Producer Cooperative. The urgency of this community-based empowerment activity is the need for an increase in technology, especially in the cultivation of vaname shrimp, the problems that occur in the community based on the results of studies and identification of vaname shrimp farmers are known to be the process of preparing shrimp feed. Where the process of mixing shrimp feed still uses manual methods or using hands so that it is not evenly distributed and takes a long time. The next problem in pond management in the process of checking the quality of water content still uses an uncalibrated pH meter. Problems in other areas related to production management and marketing, shrimp pond managers still use the usual method, not following technological developments. The implementation method follows five stages of community service, namely 1. Socialization, 2. Training, 3. Application of technology, 4. Mentoring and evaluation, 5. Sustainability of the program. The results of the activity showed an increase in technology related to the production process of vaname shrimp cultivation, namely the manufacture of a vaname shrimp feed mixer/mixer machine in Sindanglaya Village and the socialization of the use of vaname shrimp feed mixer/mixer machines for vaname shrimp farming groups in Sindanglaya Village, especially in the Tunas Harapan Core Producer Cooperative. Furthermore, improvements related to marketing management in the Community Empowerment (PKM) program were the implementation of a Workshop on the Development of Production Management and Marketing Management based on information technology and assistance in operating online marketing applications. The conclusion in the production sector was an increase in the number of vaname shrimp harvests and an increase in knowledge related to production and marketing management.
The Effect of Hardening Process on SKD 61 Material using Single Quenching and Double Quenching Techniques on Its Mechanical Properties Wiradinata, Trisna Ardi; Nopryandi; Daryus, Asy'ari; Bagas, Stefanus; Sugiyanto, Didik
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 2 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.2.8

Abstract

This study focuses on investigating the effects of Single quenching and double quenching techniques on the mechanical properties of SKD 61 material, particularly in the context of bending strength and hardness measured using the Brinell hardness test. The research method involved heating SKD 61 specimens to 1000°C for 15 minutes, followed by cooling using oil and air as quenching media. The results showed that the single quenching technique with oil medium increased the bending strength from 406.89 to 435.84 N/mm² and the hardness from 255 to 315 HB. The single quenching technique using air increased the bending strength to 410.88 N/mm² and the hardness to 290 HB. Meanwhile, the double quenching technique using a combination of oil and air produced a bending strength of 430.08 N/mm² and a hardness of 305 HB. These improvements are based on average values, and no statistical significance testing was conducted. These findings suggest that the appropriate selection of quenching media can optimize the mechanical properties of SKD 61, which is crucial for industrial applications requiring a combination of high toughness and strength.