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All Journal Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal VORTEKS Dinamis Jurnal Derma Pengabdian Dosen Perguruan Tinggi (Jurnal DEPUTI)
Nasution, Arif Fadillah
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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ANALISA KOMPUTASIONAL TERMAL DAN STRESS LINEAR AKTUATOR TELESKOP GALAH KELAP SAWIT Maha, Fausta Nicander; Muhammad Sabri; Nasution, Arif Fadillah
DINAMIS Vol. 9 No. 1 (2021): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1063.203 KB) | DOI: 10.32734/dinamis.v9i1.8440

Abstract

Linear aktuator merupakan sebuah komponen yang dirancang untuk menggerakan pisau pada alat pemanen kelapa sawit. Peneliti akan menganalisa Linear Aktuator pada alat pemanen buah kelapa sawit yang telah dirancang oleh tim harvesting palm tool. Tujuan dari penelitian ini ialah untuk mengetahui nilai tegangan, distribusi suhu, dari Linear Aktuator.Metode yang digunakan metode komputasional. Prosedur analisa dengan cara melakukan simulasi terhadap beberapa titik pada Linear Aktuator menggunakan software ansys dan solidwork. Dari hasil simulasi didapat perubahan suhu pada aktuator meningkat secara linear dimana suhu tertinggi pada shaft berada di koil (lokasi 2) dengan suhu 65,63°C dan pada casing berada di casing yang bersentuhan dengan rumah koil (lokasi 2) dengan suhu sebesar 63,04°C lalu pada analisa tegangan nilai tekanan maksimum pada 1st principal stress sebesar 1.764 MPa dan pada 3rd principal stress nilai tekanan maksimum sebesar 0.609 MPa. Dari hasil simulasi yang dilakukan Linear Aktuator aman digunakan pada alat pemanen kelapa sawit.
STUDI EKSPERIMENTAL TEGANGAN-REGANGAN PADA CONNECTING JOINT ALAT PEMANEN KELAPA SAWIT MENGGUNAKAN MODUL AKUSISI BF 350 AA Sitanggang, Mailando; Muhammad Sabri; Nasution, Arif Fadillah
DINAMIS Vol. 9 No. 1 (2021): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2145.766 KB) | DOI: 10.32734/dinamis.v9i1.8451

Abstract

Untuk mengatasi krisis energi masa depan, beberapa alternatif sumber energi sudah banyak dikembangkan, salah satunya adalah energi matahari, energi matahari dapat digunakan menjadi sumber energi panas yang pemanfaatannya sudah sangat banyak digunakan, salah satunya adalah pada mesin pendingin siklus adsorpsi. Mesin pendingin siklus adsorpsi adalah suatu alat yang digunakan untuk mendinginkan sesuatu misalnya seperti buah-buahan, air, vaksin dan sebagainya dengan memanfaatkan sinar matahari untuk menjalankan siklusnya. Mesin pendingin siklus adsorpsi memiliki 3 komponen utama yaitu kolektor, kondensor, dan evaporator. Pada pengujian ini ketiga komponen utama tersebut terbuat dari bahan alumunium karena memiliki nilai konduktivitas thermal yang tinggi dan tahan terhadap korosi akibat dari air maupun refrijeran yang digunakan. Pasangan adsorben dan refrijeran yang digunakan adalah karbon aktif serbuk sebanyak 10 kg dan metanol sebanyak 3 liter. Tujuan dari penelitian ini untuk mengetahui temperatur maksimum pada kolektor, temperatur minimum pada air yang di dinginkan, efesiensi kolektor dan nilai COP sistem. Prosedur pengujian dengan memanaskan kolektor surya (desorpsi) dari pukul 08.00 WIB - 17.00 WIB, sedangkan proses pendinginan alamiah (adsorpsi) berlangsung dari pukul 17.00 WIB – 08.00 WIB. Dari hasil pengujian dan perhitungan yang telah dilakukan didapat bahwa temperatur maksimum kolektor 126,56 oC, temperatur minimum vaksin -0,09 oC, efisiensi kolektor tertinggi 53,399 % dan nilai COP tertinggi adalah 0,000956.
ANALISA EKSPERIMENTAL GAYA POTONG, TERMAL DAN GETARAN PADA AKTUATOR TELESKOP GALAH PMANEN KELAPA SAWIT Simanjorang, Padan E; Muhammad Sabri; Nasution, Arif Fadillah
DINAMIS Vol. 9 No. 1 (2021): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2014.175 KB) | DOI: 10.32734/dinamis.v9i1.8454

Abstract

Salah satu faktor yang paling banyak mempengaruhi pertumbuhan dan produktivitas kelapa sawit adalah faktor panen. Besarnya frekuensi panen dibutuhkan suatu inovasi alat pemanen untuk memenuhi kebutuhan panen agar dapat meningkatkan efektivitas dalam proses panen kelapa sawit. Oleh karena itu penulis akan menganalisa Linear Aktuator teleskop galah pemanen kelapa sawit yang telah dirancang oleh tim harvesting palm tool. Jenis aktuator ini dirancang dengan menggunakan baterai sebagai sumber tegangan listrik yang disalurkan pada koil dan berubah menjadi energi mekanik yang menggerakkan poros secara linear yang berguna untuk menggerakkan pisau potong. Adapun tujuan dari penelitian ini adalah untuk mengetahui kecepatan potong dari Linear Aktuator, mengukur fluktuasi temperatur pada poros dan casing serta mengetahui pola getaran tanpa beban dari aktuator. Dari hasil penelitian yang dilakukan, energi yang dihasilkan aktuator adalah 7126 Nm dimana aktuator ini masih belum mampu melakukan proses pemotongan. Saat dilakukan pengukuran temperatur, fluktuasi tertinggi temperatur pada poros ada pada lokasi uji 2 dengan suhu 65,67°C dan fluktuasi tertinggi pada casing 64,55°C dimana lokasi uji 2 ini merupakan lokasi yang bersentuhan langsung dengan koil
The Effect of fuel mixture composition on gasoline engine emissions in urban conditions Siregar, Zufri Hasrudy; Nasution, Arif Fadillah; Fazri, Muhammad; Refiza, Refiza; Puspita, Riana; Thamrin, Husni; Nasution, Asmara Sari
Jurnal VORTEKS Vol. 5 No. 2 (2024): October 2024
Publisher : Program Studi Teknik mesin, Fakultas Teknik, Universitas Al Azhar Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54123/vorteks.v5i2.389

Abstract

The increasing number of motorized vehicles in urban areas significantly impacts air quality and public health. Gasoline engine emissions, including CO, HC, and NOx, contribute to pollution issues such as volatile organic compounds (VOCs) and secondary organic aerosols (SOAs). Understanding these factors is crucial for developing effective emission control strategies. This study investigates the effect of ethanol-blended gasoline on vehicular emissions, focusing on CO, HC, and NOx. The research aims to optimize fuel mixtures to reduce harmful emissions while considering environmental and health impacts. The study uses a quantitative experimental design, combining laboratory tests with field trials on 10 vehicles under controlled conditions. Results show that ethanol-blended fuels significantly reduced CO emissions, from 2.4 g/km (E0) to 1.5 g/km (E30). A moderate reduction was observed in HC emissions, from 0.55 g/km (E0) to 0.40 g/km (E30). A slight decrease in NOx emissions was noted. Ethanol's oxygen content improves combustion efficiency, reducing CO and HC emissions, but may slightly increase NOx due to combustion temperature changes. This study highlights the potential of ethanol as an environmentally friendly fuel alternative, with further research needed to address NOx-related challenges
Optimalisasi sistem plumbing hemat air di Rusun Brimob Sampali Medan: edukasi teknologi dan manajemen limbah cair Siregar, Zufri Hasrudy; Nasution, Arif Fadillah; Mawardi; Puspita, Riana; Refiza; Nasution, Asmara Sari; Fazri, Muhammad; Lubis, Saidan Sany
Jurnal Derma Pengabdian Dosen Perguruan Tinggi (Jurnal DEPUTI) Vol. 5 No. 1 (2025): Januari 2025
Publisher : LPPM Universitas Al-Azhar medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54123/deputi.v5i1.399

Abstract

The availability of clean water in high-density urban areas is a pressing concern, as evidenced by the limited infrastructure and significant water wastage, which can reach 30%. This research aims to optimize the water-saving plumbing system in Brimob Sampali Flat in Medan through an integrative approach of applying modern technology and community education.This research utilizes a mixed method of qualitative (observation, interview) and quantitative (Likert scale questionnaire, digital measurement) data collection. The research process is outlined as follows: first, the existing conditions are analyzed; second, a new plumbing system is designed; third, water-saving technologies are implemented, such as gray water recycling systems and dual flush toilets; fourth, the effectiveness of the system is monitored and evaluated.The study population consisted of 30 residents of the Brimob Sampali Flat in Medan, and their pre- and post-implementation water consumption data were compared to measure the impact of the system.The results indicated that the implementation of the water-efficient plumbing system led to a 33.52% reduction in water consumption, while the integration of the gray water recycling system augmented this reduction by an additional 58.17%.The educational program was found to have enhanced residents' comprehension of water conservation, as evidenced by an average Likert score of 4.03 out of 5. Moreover, satisfaction with the novel system attained an average score of 4.1, signifying a positive response.The novelty of this study lies in the integration of water-saving technologies with an educational program designed specifically for the local Indonesian context, providing a holistic model that can be replicated in other regions to address clean water issues in a sustainable manner.
Optimasi Sistem HVAC di Gedung UMKM 3 Lantai Universitas Sumatera Utara Menggunakan Pipe Flow Expert untuk efisiensi energi dan pengurangan Head Loss Nasution, Arif Fadillah
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 10, No 2 (2024): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v10i2.10689

Abstract

Heating, ventilation, and air conditioning (HVAC) systems are essential for ensuring comfort and energy efficiency. Due to high head loss in the HVAC piping system, the three-story SME building faces energy efficiency issues, leading to increased energy consumption and operational costs. Using Pipe Flow Expert software, this study aims to optimize the SME building’s HVAC system to conserve energy. The main goal of this research is to reduce energy consumption and operational costs by decreasing head loss within the piping network and improving pump efficiency. To achieve head loss reduction and decrease system power requirements, this study utilized Pipe Flow Expert simulations to test various piping configurations. Results show that pipes with smaller diameters and longer lengths tend to generate greater head loss, causing pumps to consume more power. Recommendations for modifying pipe diameter and selecting materials with lower roughness coefficients successfully reduced head loss by up to 30%, enabling pumps to operate more efficiently. A total power reduction from 5.96 kW to 4.172 kW was observed. This study concludes that optimizing piping systems and enhancing pump efficiency significantly improves the performance of HVAC systems in the SME building at Universitas Sumatera Utara. Additionally, this study provides a valuable contribution toward developing more efficient and environmentally friendly HVAC systems and can serve as a model for similar research and development in the future.
Evaluasi Kritis dan Model Alternatif Hunter Curves untuk Sistem Plumbing Gedung Bertingkat di Medan Siregar, Zufri Hasrudy; Nasution, Arif Fadillah; Mawardi, Mawardi; Refiza, Refiza; Suherman, Suherman
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 11, No 2 (2025): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v11i2.13638

Abstract

Clean water is a fundamental necessity in high-rise buildings, so calculating peak water demand is a critical aspect of plumbing system design. So far, planners in Indonesia still rely on Hunter Curves (1940), a classic method developed in the United States and has been used for more than eight decades. The Hunter method is no longer relevant because water consumption patterns have changed, the use of water-saving devices is becoming more widespread, and the characteristics of tropical buildings in Indonesia are different from Hunter's basic assumptions. This study critically evaluates Hunter Curves through a case study of the Lexington Tower Medan Healthcare Building (20 floors, 160 units), comparing the Hunter method with an alternative model based on a locally calibrated Monte Carlo probabilistic simulation (P95). Monte Carlo simulations were performed in 10,000 iterations using MATLAB-based stochastic modeling to obtain peak discharge distributions. The results showed a peak discharge according to Hunter of 34,695 L/s, while the alternative model reached 37,440 L/s (+7.91%). This difference affects the pipe dimensions and pump power, but the additional energy cost (±Rp850,000/year) is commensurate with the increased reliability of the system. This study confirms that Hunter Curves are obsolete and need to be replaced by a more accurate, energy-efficient, and sustainable approach
Co-Authors Asmara Sari Nasution Fazri, Muhammad Husni Thamrin Lubis, Saidan Sany Maha, Fausta Nicander Mawardi Mawardi Muhammad Sabri Refiza Refiza, Refiza Riana Puspita, Riana Simanjorang, Padan E Siregar, Zufri Hasrudy Sitanggang, Mailando Suherman, Suherman