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All Journal Jurnal Taman Vokasi MACHINERY: Jurnal Teknologi Terapan International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS)
Anwar, Zainuri
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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ANALISIS PENGARUH TOTAL DRY SOLID BLACK LIQUOR TERHADAP EFISIENSI RECOVERY BOILER Sumarna, Herlin; Hidayati, Baiti; Ramadhoni, Tri Satya; Okviyanto, Toni; Anwar, Zainuri; Rifa’i, Ahmad Imam
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 2 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8085820

Abstract

In the pulp and paper industry, a large amount of biomass (wood) has been used and produces by-products or residues resulting from the industry including wood bark, remaining logging and black liquor which is one of the main biomass resources that can be used for energy purposes. Aside from being a fuel, the recovery boiler process can convert black liquor into green liquor, where green liquor will be needed in the pulp production process. Writing this journal aims to determine the effect of total dry solids in black liquor on the efficiency of recovery boilers. The analysis was carried out using energy calculations in the recovery boiler for five days. From the calculation results it is known that there is a decrease and increase in boiler recovery efficiency, this is caused by several factors, including the heat absorption process experienced by the boiler feed water, the mass of black liquor, and the percentage of total dry solids. The total dry solid will affect the water content that will enter the combustion chamber, the higher the % TDS the more water content will enter the combustion chamber and this will affect the recovery efficiency of the boiler. The highest boiler recovery efficiency calculation results occurred on the first day, namely 65.24% and the lowest boiler recovery efficiency calculation results occurred on the fourth day, namely 62.96%.
Pengaruh Satu dan Dua Sudu Terhadap Kinerja Turbin Archimedes Screw anwar, zainuri; Siahaan, Ronaldo; Ratnawati, Dianna; Azwan, Hasnul
Jurnal Taman Vokasi Vol 11 No 1 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/jtvok.v11i1.14632

Abstract

One of the parameters that affect turbine performance is the amount and shape of the turbine blades. This study aims to determine the effect of the amount of Archimedes screw turbine blades on turbine performance. The type of turbine used in this study is the Archimedes turbine with single and double screw balde. The turbine test was carried out in the Puri Kedaton river, Pematang Gajah village, with a flow rate entering the turbine of 0.043 m3/s. The shaft load received by the turbine is varied, namely 30 kg, 40 kg, 50 kg and the tilt of the turbine is installed 30°. The test results show that the double screw turbine type produces 518 Watt turbine power with the highest efficiency of 80,5%.
Pengaruh Variasi Geometri Sudu Impeler Radial Semi Terbuka Terhadap Efisiensi Mini Pompa Sentrifugal: Pengaruh Variasi Geometri Sudu Impeler Radial Semi Terbuka Terhadap Efisiensi Mini Pompa Sentrifugal Anwar, Zainuri; Hadi Sutanto; Anthon De Fretes; Sandra Octaviani
Jurnal Taman Vokasi Vol 11 No 2 (2023): Vol. 11 No. 2 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/jtvok.v11i2.16258

Abstract

Salah satu yang mempengruhi peningkatan efisiensi pompa adalah geometri sudu impeler. Tujuan dari penelitian ini adalah untuk mendapatkan desain geometri impeler terbaik pada mini pompa sentrifugal. Geometri impeler yang digunakan dalam penelitian ini memiliki tiga variasi yaitu: tipe impeller radial miring, radial melengkung, dan radial airfoil. Sudu impeler didesain selanjutnya dibuat mengunakan mesin 3D print dengan bahan filamen PLA. Motor penggerak pompa yang digunakan adalah dinamo 775 DC 12Volt dengan kecepatan putaran pompa diatur menggunakan potensio pada 2000 rpm, 2150 rpm, 2300 rpm, 2450 rpm, 2600 rpm, dan 2700 rpm. Hasil pengujian menunjukkan bahwa perbedaan geometri sudu impeler mempengarui efesiensi mini pompa sentrifugal. Efisiensi tertinggi terjadi pada tipe impeler radial melengkung dengan nilai efesiensi mencapai 19,35% pada putaran 2700 rpm. Kondisi ini lebih baik daripada tipe impeler lainnya dengan trend kenaikan efesiensi meningkat seiring dengan peningkatan putaran pompa.
Geothermal Power Generation: Harnessing Electrical Energy Through The Organic Rankine Cycle (ORC) System Zikri, Ahmad; Sumarna, Herlin; Hidayati, Baiti; Anwar, Zainuri; Putri, Fenoria; Zamheri, Ahmad; Negash, Semir M; Nasution, Gaizka Ghifari
International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Vol. 2 No. 1 (2024): IJMEAS - January
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijmeas.v2i1.235

Abstract

The research employs a thermodynamic simulation method using an Engineering Equation Solver (EES), relying on theoretical calculations. This method is integrated into a geothermal power plant, precisely focusing on geothermal source temperatures of approximately 95ºC. The investigation centers on the heat transfer process within a high-temperature heat transfer fluid from geothermal sources, conveying stored heat to the Organic Rankine Cycle (ORC) evaporator. Three specific working fluids, R134a, R11, and R22, examine working fluid selection for ORC at 95ºC. The results highlight the R11 organic fluid as an optimal compromise, excelling in two crucial criteria. Firstly, R11 exhibits the highest net mechanical power, = 34.81 kW compared to alternative fluids. Secondly, it boasts the best energetic efficiency of the cycle, registering  = 16.01%, outperforming both R134a ( = 13.17%) and R22 ( = 12.64%). In summary, this study conducts a focused analysis of the energy aspects of an Organic Rankine Cycle (ORC) for electricity production using geothermal sources and organic fluids. Operating at a geothermal source temperature of 95ºC with a water flow rate of 80 lt/s and environmental conditions at 20ºC, the parametric study emphasizes the superiority of the R11 organic fluid. R11 emerges as the optimal choice, demonstrating the highest net mechanical power and superior energetic efficiency compared to alternative fluids, thereby contributing valuable insights to advancing sustainable and efficient energy technologies.
Static Analysis of Electric Vehicle Prototype Frame Ramadhoni, Tri Satya; Rifa'i, Ahmad Imam; Anwar, Zainuri; Hidayati, Baiti; Sumarna, Herlin; Okviyanto, Toni; Sampurno, Rachmat Dwi
International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Vol. 2 No. 1 (2024): IJMEAS - January
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijmeas.v2i1.242

Abstract

This study aims to determine the strength of the prototype car frame created by the SMES (Sriwijaya Mechanical Engineering Squad) team in participating in the KMHE (Energy Efficient Car Contest) and SEM (Shell Eco-Marathon). This prototype vehicle is an energy-efficient car with an electric motor drive and utilizes a hollow rectangular tube-shaped frame with aluminum 6061 material. The overall dimensions of the car frame are 2500x410x540 mm. Static loading analysis was conducted using manual calculations and computer simulations. Static loading was performed on seven support bars, the main bar, and the overall prototype car frame. Applied loads include the electric motor load, control panel, battery load, driver's body load, driver's legs, front body load, rollbar body load, rear body load, and reaction loads from bars receiving direct loads. Autodesk Inventor software with frame analysis features was used in the simulation process. Based on the results of manual calculations and computer simulations, the difference in the average results of maximum bending moment, maximum stress, and displacement on the seven types of support bars, with a small error tolerance below 10%, is 1.01%, 5.24%, and 3.25%, respectively. Based on computer simulation results for the main bar and seven types of support bars, the highest maximum stress occurs in the main bar, which is 128727.37 N.
Co-Authors Anthon de Fretes, Anthon de Fretes Azwan, Hasnul Dianna Ratnawati Hadi Sutanto HIDAYATI, BAITI Nasution, Gaizka Ghifari Negash, Semir M Okviyanto, Toni Putri, Fenoria Ramadhoni, Tri Satya Rifa'i, Ahmad Imam Rifa’i, Ahmad Imam Sampurno, Rachmat Dwi Sandra Octaviani Siahaan, Ronaldo Sumarna, Herlin Zamheri, Ahmad Zikri, Ahmad