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All Journal Journal of Geoscience, Engineering, Environment, and Technology Sprocket : Journal of Mechanical Engineering Jurnal Polimesin

Parulian Siagian

Prodi Teknik Mesin Universitas HKBP Nommensen

Author-ID : 3321332

Automotive Engineering Control & Systems Engineering Earth & Planetary Sciences Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Articles

Perhitungan Energi Bagi Kebutuhan Pengepresan Kopra Pada Perancangan Mesin Press Minyak Kelapa Richard A M Napitupulu; Alberto Hutauruk; Miduk Tampubolon; Lestina Siagian; Parulian Siagian
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 1 No 1 (2019): Edisi Agustus 2019
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

An experiment has been conducted to determine the amount of deformation energy and energy per volume needed for the design of coconut oil press machines. By using a press tube with a diameter of 59 mm and by varying the load of press and speed of press the results obtained that to produce the optimal average volume of coconut oil are at the pressure load of 40 KN and the pressure rate of 6 mm / minute. The ideal energy per volume used to suppress coconut oil press machine is 6.106 J / m3.

Pengaruh Perbedaan Ketebalan Irisan Asam Gelugur (Garcinia atroviridis) Terhadap Kandungan Total Asam Pada Asam Sitrat Dengan Pengeringan Sinar Matahari Sistim Konveksi Paksa Parulian Siagian; Tumiur Gultom; Sibuk Ginting; Hotman Manurung; Eko Y Setyawan
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 1 No 1 (2019): Edisi Agustus 2019
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

The mechanism of the drying process is the process of heat transfer and mass transfer that takes place simultaneously. The pressure of the water vapor in the acid gelugur is higher than that on the surface interface of the gums and air acids. Intensity solar radiation averages around 300-590w / m2 and Ambient Temperature 28,830C. The hot air condition in the drying box averages 320C. The content of total citric acid gelugur acid was 1.2787% with 3mm slice thickness and 1.3981% with a 5mm slice thickness. Drying is done from 08.00-17.00 am with a hot air flow rate of 1.5m/s.

Desain dan Manufaktur Model Piston Jupiter MX 135 cc Dengan Menggunakan 3D Printer Wandro Siregar; Richard A.M. Napitupulu; Parulian Siagian
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 1 No 2 (2020): Edisi Februari 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

A product that will be mass produced requires an initial prototype so that it can assess whether a product design meets the desired criteria and is ready to be mass produced. For the purposes of making the initial prototyping, one alternative is to use 3D printing. Prototyping is an early example of a concept as part of the product development process. Rapid Prototyping allows the visualization of a 3D (three-dimension) image into an original three-dimensional object that has a volume. In addition, rapid prototyping products can also be used to test certain parts. In the design process the 2017 Solidworks software and manufacturing process are used anet type 3D printer. In the manufacturing process many 3D Printer parameters must be regulated and very influential on the manufacturing results to be obtained, including the 3D printer parameter settings in the slicing process. This is a process that is very influential on the results, where the process of slicing the material temperature, printing speed, wall thickness, layer thickness and support must be set properly. In the future it is expected that research on 3D printing manufacturing results with the same printer parameters for the design results of some CAD software.

Analisis FEM Dari Suhu HAZ Dengan Pemodelan Sumber Panas Pada Proses Butt-Joint Menggunakan MSC Marc Mentat Rokki Manurung; Septiani Silitonga; Yohanes Hutahaean; Charles S.P Manurung; Parulian Siagian; Richard A M Napitupulu
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 1 No 2 (2020): Edisi Februari 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

The success of the welding process is the occurrence of good and strong welding joints that are inseparable from the influence of the heat source. The problem that often occurs when welding is a distortion that can trigger the initial formation of cracks. By predicting the level of welding distortion beforehand, engineers can also reduce the amount of rework by reverse design and distortion margins. That is why with current technological developments it is possible to carry out simulations based on analytical solutions that are implemented through the use of software, where in this study the authors sought to model the temperature of the HAZ region in the Butt Joint process using MSC Marc Mentat. The simulation results show that the heat source is very determining the occurrence of distortion and pressure on the surface. This is caused by the phenomenon of melting and shrinkage that occurs in a short time.

Perbandingan Performansi 4 Variasi Siklus Kompresi Uap 2 Tingkat Siwan Ediamanta Perangin-angin; Himsar Ambarita; Waldemar Naibaho; Parulian Siagian; Marhiras Sitanggang; Libianko Sianturi
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 2 No 1 (2020): Edisi Agustus 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Keberadaan Pengkondisan Udara (AC) tidak terlepas dari aspek kehidupan sehari-hari. Pengkondisian Udara memanfaatkan prinsip termodinamika siklus kompresi uap. COP merupakan parameter untuk melihat kinerja dari mesin pendingin tersebut. Dalam penelitian ini, salah satu cara untuk meningkatkan COP dari mesin Pendingin adalah memodifikasi siklus 1 tingkat menjadi siklus 2 tingkat. Karya inimengkaji perbandingan model siklus kompresi uap 2 tingkat dengan beberapa variasi. Perbandingan ini menggunakan sofware ASPEN PLUS V10 untuk melihat performansi dari setiap varian. Untuk fluida kerja (Refrigeran) yang digunakan adalah R-32. Dari hasil simulasi Varian no III menunjukkan nilai COP yang lebih tinggi dari pada varian lainnya.

Redox Flow Battery Sebagai Perangkat Penyimpanan Energi Septiani Silitonga; Ricky Therisno; Richard A M Napitupulu; Charles S.P. Manurung; Parulian Siagian; Yong Song Chen
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 2 No 2 (2021): Edisi Februari 2021
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Energy storage such as vanadium redox flow batteries (VRFB) has increased to store renewable energy resources in the last decade. However, the unbalanced crossover level of vanadium is often a major constraint which has a significant impact on battery capacity and life cycle in long-term operation. Performing an asymmetric electrolyte volume is one of many ways to solve this problem. The different volumes on the positive and negative sides were analyzed to see their effect in suppressing the decrease in VRFB capacity. With the result of the optimal electrolyte excess ratio, long-term cycle performance was carried out to investigate the reduction in capacity of VRFBs.

Pengeringan Kopi Arabica Sistim Terintegrasi Penyimpanan Termal Dengan dan Tanpa Desikkan Parulian Siagian; Richard A M Napitupulu; Siwan P Peranginangin
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 4 No 1 (2022): Edisi Agustus 2022
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Penelitian ini mengkaji dan meniliai keefektifan pengering surya yg kontiniu dan terintegrasi dengan pengeringan penyimpanan panas dikombinasikan dengan molekuler13 (Na86 [(AlO2)86 (SiO2)106] 264H2O) sebagai penahan kelembapan. Hasil menunjukkan pada kondisi terik matahari, temperature didalam ruang pengering cenderung berbeda antara 42.100C-46.600C dan rata rata 6.700C -11.180C diatas tempratur ambient, rata rata kelembapan 68.94% dengan rata rata kecepatan udara 1.16m/s. Pengeringan konvensional membutuhkan waktu selama 5 hari dengan temperatur maksimum 35.420C pada rata rata kecepatan angin 0.7m/s. Waktu pengeringan dengan menggunakan desikkan dan tanpa menggunakan desikkan adalah 35 jam dimana bobot 8.207.kg pakai desikkan dan bobot 8.370.kg tanpa desikkan dengan kadar air 13%, sementara pengeringan konvensional membutuhkan waktu 120 jam atau 5 hari dengan suhu maksimum 35.420C dan suhu rata rata 29.700C. Mutu aroma kopi oleh tim teaster bahwa yang memakai desikkan cenderung aroma aromatic better dan coklat, caramel serta rasa pahit yang kuat, sementara tanpa desikkan ada rasa pahit agak lemah dan rasa defect

Optimization of Nickel Electroplating on Low Carbon Steel for Corrosion Resistance using Immersion Corrosiontest with 3.5% NaCl Parulian Siagian; Richard A.M. Napitupulu; Eko Yohanes Setyawan; Muhammad Fakhri Amadika
Jurnal POLIMESIN Vol 21, No 1 (2023): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i1.3270

This research studied the corrosion resistance of low carbon steel that has been coated with nickel in NaCl solution by the Immersion Corrosion method with 3.5% NaCl liquid. Coating is done to increase the wear resistance of low carbon steel. The coating is done by electroplating process, with various voltages of 3V, 3.5V, 4V and 5V and the liquid is heated to a temperature of 44-60oC in the immersion time range of 30 minutes, 40 minutes and 50 minutes for each voltage variation. From the results of the study, it was found that the longer the immersion time in the electroplating process, the thicker the resulting layer with the addition of about 4 - 8µm for each difference in immersion time.

Experimental of Environmental Development Using Continuous Solar Dryer With Solid Dehumidification For Coffee Drying Parulian Siagian; Aprima A. Matondang; Andreas V. H. Simanjuntak; Budhi S. Kusuma; Joel Panjaitan; Andrean V. H. Simanjuntak
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 02 (2025): JGEET Vol 10 No 02 : June (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.02.21492

As the tropical country, Indonesia has a sustainable solar energy for the farm products such as coffee. Indonesia’s coffee has been categorized as one of the biggest export products in the world and needs a development system to provide drying coffee beans with good quality. Therefore, this study comprehensively explains an experiment to develop a continuous solar air dryer with a hybrid system for drying coffee. The system has two different modes: off-sunny and sunshine hours. The heated air from the collector is driven into the drying chamber during the sunlight. The results show that the drying chamber's maximum temperature during daylight ranged from 40°C to 56°C and 9°C to 22°C warmer than the ideal environment temperature. Then, the coffee beans got the 12,7% moisture content in 107 hours in a solar dryer with solid dehumidification material. During off-sunlight, the air humidity reaches a 17% reduction and relatively consistent with air temperature. Furthermore, the benefit of this research can support the agricultural system without sunlight and apply a molecular sieve as a solar dehumidifier for the desiccant material in the drying chamber.

Co-Authors Alberto Hutauruk Andrean V. H. Simanjuntak Andreas V. H. Simanjuntak Baehaqi Budhi S. Kusuma Charles S.P Manurung Charles S.P. Manurung Eko Y Setyawan Eko Yohanes Setyawan Himsar Ambarita Hotman Manurung Joel Panjaitan Lestina Siagian Libianko Sianturi Marhiras Sitanggang Miduk Tampubolon Muhammad Fakhri Amadika Perangin-angin, Siwan E. Richard A M Napitupulu Ricky Therisno Rokki Manurung Septiani Silitonga Septiani Silitonga Sibuk Ginting Tumiur Gultom Waldemar Naibaho Wandro Siregar Yohanes Hutahaean Yong Song Chen

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