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All Journal JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Sprocket : Journal of Mechanical Engineering Dinamis
Tampubolon, Miduk
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Automotive Engineering Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Analisa Kebutuhan Energi Termal Pada Kotak Pengering Biji Kopi Arabica yang di Isolasi dengan Aluminium Foil Siagian, Parulian; Napitupulu, Richard A. M.; Tampubolon, Miduk; Siagian, Lestina
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 4 No 2 (2023): Edisi Februari 2023
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v4i2.946

Abstract

The experiment test was carried out to obtain the composition of the caloric quality needed to determine the water content and the mass amount of coffee beans when they were dried by utilizing the sun's heat. Heat transfer processes by convection, conduction and radiation play an important role in the drying process with heat quality. Ambient temperature data of 350C with a constant fan rotation speed of 1.0m/s. The duration of the test is 5 days where the initial sample weight is 5000gr with the final result being a water content of 12-15%, with a duration of testing per day for 10 hours starting at 08.00-18.00Wib. The final drying weight of coffee beans for 5 days is: 2500.21gr with an initial weight of 5000kg. The temperature difference around the box is 31,110C. heat weight to evaporate water content Qh= 65.6058.kJ. and the heat required in heating the Coffee beans is 72,839 kJ. The ability to dry 5000gr of coffee beans requires total heat: 138.43kJ with a drying box volume of 8.88m3.
Analisa Kebisingan Pada Alat Berat Wheel Loader Wa-350 Berdasarkan Perbandingan Jarak 50, 100, 150 Cm Dan Kapasitas Sihombing, Suriady; Nababan, Wilson Sabastian; Tampubolon, Miduk; Turnip, Cris Stevan
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 5 No 2 (2024): Edisi Februari 2024
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v5i2.1396

Abstract

Wheel loader is a tool that facilitates work by using hydraulic energy. Wheel loader testing is carried out by looking for noise data arising in the combustion chamber. There are several stages that must be done, namely the first step is to prepare a sound level meter as a noise detection device for heavy equipment, wheel loader, then take measurements with several variations in the distance between the combustion chamber and the sound level meter. In the next step we can find out the noise level read at the sound level meter with ideal, medium, and maximum rotation on the WA-350 wheel loader. So that the Noise Threshold Value according to Permenaker No. per-51 / MEN / 1999, ACGIH, 2008 and SNI 16-7063-2004 is 85 dB. So the noise produced by the Wheel Loader above the NAB Permenaker 104.7dB can cause tingling, unwell, hearing saturation, stomach pain, and circulatory problems. It is recommended that workers are required to use earmuffs or ear muffs.
ANALYSIS OF VIBRATION CHARACTERISTICS ON WA-350 WHEEL LOADER HEAVY EQUIPMENT MACHINE BASED ON CAPACITY COMPARISON WITH 2000 RPM ROTATION IN HORIZONTAL, VERTICAL AND LONGITUDINAL AREAS Sihombing, Suriady; Nababan, Wilson Sabastian; Tampubolon, Miduk; Panjaitan, Fernando
Jurnal Dinamika Vokasional Teknik Mesin Vol. 8 No. 2 (2023)
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v8i2.71616

Abstract

Wheel loader is a tool that facilitates the work of moving materials from one place to another using hydraulic energy. Wheel loader machine testing is carried out by looking for vibration data arising in the engine block. There are several stages that must be done, the first step is preparation of a Handheld Vibrometer as a vibration detection device. Next, examine the vibration level read on the Handheld Vibrometer with ideal, medium, and maximum rotation. Based on the ISO 2372 standard, vibration response results are obtained where the power capacity of a diesel motor is 350 kW where the highest speed is 62.7 mm / s with a horizontal direction at 90 seconds, categorized in Zone D in red, vibration from the engine is within dangerous limits and can be damaged at any time.
The Effect of Engine Noise on the Comfort of WA-360 Loader Heavy Equipment Operators Based on Capacity and Distance of 100, 150 and 200 cm Sihombing, Suriady; Nababan, Wilson Sabastian; Tampubolon, Miduk; Sihombing, Hendrik
DINAMIS Vol. 12 No. 2 (2024): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/dinamis.v12i2.18727

Abstract

The existence of a limited volume of machine room and coupled with the existence of various kinds of machinery in it, both main drive machinery such as the main motor and other supporting machinery such as electric motors, compressors, pumps and so on, all of which are sources of noise, will cause high noise noise. Where heavy equipment is a tool used to simplify the work process so that it becomes faster, easier and the results are in accordance with expectations and one example is the Whell Loader WA-360 heavy machine. Therefore, research is needed to measure the level of noise produced by the Whell Loader WA-360 heavy equipment engine to operator comfort. According to NAB According to Kepmenaker No. per-51/MEN/1999,2008 and SNI 16-7063-2004, the noise level that results in hearing damage of 90 dB for workers who are working for 8 hours per day. That the threshold value for the noise of the combustion chamber of the Wheel Loader WA-360 heavy equipment engine with a bucket capacity of 3.4 and 5 tons produces a noise level of 106.5 dB with a hearing scale and it is recommended that the operator of the Whell Loader heavy equipment use Earphones while doing work.
Co-Authors Nababan, Wilson Sabastian Panjaitan, Fernando Richard A M Napitupulu Siagian, Lestina Siagian, Parulian Sihombing, Hendrik Sihombing, Suriady Turnip, Cris Stevan