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All Journal JTT (Jurnal Teknologi Terpadu) JURNAL INTEGRASI Jurnal Teknik Mesin Sinergi
amrullah mansyur
Politeknik Negeri Ujung Pandang
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Energy Materials Science & Nanotechnology Mechanical Engineering Other

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RANCANG BANGUN COOLER BOX BERBASIS TERMOELEKTRIK DENGAN VARIASI HEATSINK amrullah mansyur
Jurnal Teknologi Terpadu Vol 9, No 1 (2021): JTT ( Jurnal Teknologi Terpadu)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jtt.v9i1.989

Abstract

Pendingin termoelektrik merupakan solid state technology yang bisa menjadi alternatif teknologi pendingin pengganti sistem vapor compression. Salah satu komponen dari pendingin termoelektrik adalah heatsink yang pemasangannya paling sering digunakan untuk keandalan dan pengaturan termal suatu rangkaian. Adapun tujuan dilakukannya penelitian ini adalah dihasilkan mesin pendingin berupa cooler box termoelektrik  dengan daya listrik yang rendah, menganalisa kinerja termoelektrik pada cooler box sehingga dapat ditentukan pemilihan heatsink terbaik yang digunakan pada cooler box. Penelitian dilakukan dengan  melakukan perancangan dan perakitan  cooler box berbahan plastik berukuran 150 mm x 150 mm x 210 mm ,modul termoelektrik TEC-12706 , sumber listrik power supply 12V, 20 A dan heatsink aluminium yang divariasikan. Pengujian pada cooler box thermoelektrik dilakukan selama 120 menit dan dapat disimpulkan bahwa hasil terbaik dengan menggunakan heatsink berukuran 100mm x 120mm x 35mm, konsumsi daya listrik 19.6 W, beda temperatur sebesar 29.7oC, kalor yang diserap pada sisi dingin  20.1 W, kalor yang dilepas pada sisi panas sebesar 39.7 W, temperatur ruang pendingin 18.75oC dan COP sebesar 0.57.   
THE EFFECT OF THE PULSE CURRENT IN WIRE ELECTRIC DISCHARGE MACHINE ON MEASUREMENT ERROR TOWARD ALUMINUM ALLOY: AN EXPERIMENTAL STUDY Amrullah Amrullah; Rahman Hakim
JURNAL INTEGRASI Vol 12 No 2 (2020): Jurnal Integrasi - Oktober 2020
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/ji.v12i2.2398

Abstract

This research investigates the measurement error on Wire EDM cutting products to find the pulse current's problem-solving. One of the machining parameters that affect the precision of Wire EDM is the magnitude of the current. The experimental study carried out by using the pulse current started from 4-Ampere up to 8-Ampere as the research parameters. A chamfer dimension on 6061 Aluminum alloy was investigated with the gd&t method with ISO 5459 and ISO 1101 standard. Statistic method applied and processed on Minitab with Shapiro-Wilk parameter for normal distribution. These experimental studies have a normal distribution that finds the phenomena of 8-Ampere of pulse current generate a large measurement error. Furthermore, in these experimental studies, the usage of a Profile Projector generates a massive measurement error, up to 64.5% compared with CMM. A strong commitment to calibrate the Profile Projector up to date to maintain the machining quality.
Uji Eksperimental Fenomena Water Hammer dengan Variasi Ketinggian Surge Tower Amrullah Mansyur; Muh Rusdi; Yiyin Klistafani
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.4226

Abstract

In this study an analysis of the water hammer process was carried out in a piping installation with two pumps of different specifications arranged in a single arrangement. The solution given as a form of water hammer protection is variations in the height of the surge tower in piping installations. The aim of this research is to identify the phenomenon of water hammer in piping installations with different pump discharges and the effect of the height of the surge tower as a damper against pressure fluctuations that occur. The test is carried out by closing the valve suddenly and varying the height of the surge tower to determine the pressure value that occurs due to the water hammer effect. From the experimental test results, it can be seen that a surge tower with a height of 1 meter can best dampen back pressure due to the water hammer effect at a discharge of 2.4 m3/h. The theoretical and experimental analysis shows that the addition of a surge tower can reduce the pressure due to the water hammer effect. The pressure drop is 2.6 kg/cm2 to 2.2 kg/cm2 in pump installation 1 and the pressure drop is from 4.6 kg/cm2 to 1.8 kg/cm2 in pump installation 2. The use of a surge tower with a height of 1 meter can best reduce back pressure with 2.78 hours s at a discharge of 1.4 m3/h.
Co-Authors Muh Rusdi Rahman Hakim Yiyin Klistafani