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Sekolah Tinggi Teknologi Industri Bontang, Jalan Brigjen Katamso No 40 Kelurahan Belimbing Kecamatan Bontang Barat, Kota Bontang
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Jutek JAGO
Published by Sekolah Tinggi Teknologi Industri Bontang
ISSN : -     EISSN : 27983315     DOI : https://doi.org/10.53620/jtg
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering
Topik Jutek JAGO terkait dengan aspek Teknik Kimia dan Mesin, terkait dengan industri energi terbarukan, penelitian dan pengembangan, industri kimia, EPCC (Engineering, procurement, construction and commissioning), teknik manufaktur, teknik konversi energi, teknik konstruksi dan rekayasa material. Penetapan artikel yang dimuat di Jurnal Teknik JAGO melalui proses blind review oleh editor dan reviewer Jurnal Teknik JAGO dengan mempertimbangkan antara lain: relevansi dan kontribusi artikel terhadap perkembangan profesi dan praktik akuntansi serta pemenuhan persyaratan dasar publikasi jurnal. Redaksi dan reviewer memberikan masukan dan hasil evaluasi yang membangun kepada penulis artikel.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 7 Documents
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Search results for , issue "Vol. 1 No. 1 (2021): June" : 7 Documents clear
ANALISIS ERGONOMI BEBAN KERJA TERHADAP KELELAHAN KERJA PADA PEKERJA MANUAL BATU BATA DENGAN REGRESI LINIER BERGANDA BERBASIS WEB Junaini; Yano Hurung Anoi; Yunanri W
Jurnal Teknik Juara Aktif Global Optimis Vol. 1 No. 1 (2021): June
Publisher : STTI Bontang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (929.474 KB) | DOI: 10.53620/jtg.v1i1.5

Abstract

Small industry has a big role in encouraging development in areas, especially rural areas, which cannot be separated from national development in accordance with regional autonomy and regional aspirations. One of the small industries to fulfill development is the brick-making industry manually because it still uses a simple process in its production. Manual brick making cannot be separated from the risks that will arise for workers, one of the risks is fatigue due to the workload carried out in the process of making bricks repeatedly, the workload can be in the form of physical loads or mental loads. Fatigue from work will reduce performance and increase the rate of work errors. Increasing work errors will provide opportunities for work accidents. From this it is necessary to measure workload on work fatigue from the results of the ergonomic analysis of brickwork manual workers with Linear Regression with web-based programming. Each worker will be recorded based on the category Initial Pulse, Work Rate, Body Weight, Blood Pressure, Height, Age, as well as several questions to workers needed to measure the workload against work fatigue. Questions about Activity Weakness and Physical Fatigue in a span of days (Very Often, Often, Sometimes, Never; to each worker. The conclusion from the results of the workload analysis has an influence on fatigue of work in making bricks manually, namely Normal or Not Fatigue 6 workers , and Needs Improvement 9 workers with the percentage classification of Cardiovascular Load (CVL) is 40% and 60%.
Pengaruh Jenis Material Pipa Pendingin Terhadap Distribusi Temperatur di Dalam Beton Yang Didinginkan dengan Sistem Post Cooling Ratnawati
Jurnal Teknik Juara Aktif Global Optimis Vol. 1 No. 1 (2021): June
Publisher : STTI Bontang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1027.942 KB) | DOI: 10.53620/jtg.v1i1.6

Abstract

Mass concrete is a concrete casting with a large enough volume, usually used for foundations, bridges,dams and so on. The heat of hydration in the mass concrete causes a temperature difference between the inside and the outside of the concrete surface. This can cause cracks in the concrete,where the temperature inside the concrete has a higher temperature rise than the outer surface yhat is in contact with the environment. One way to control the temperature of the concrete is to use a post cooling system.Post cooling system design requires knowledge of temperatur distribution in concrete. The research was conducted by varying the cooling pipe materials used,namely steel,PVC,and PEX where the cooling water discharge and temperatur were constant.The result of the research that have been carried out show that with the same cooling water discharge and temperature,concrete with PVC cooling has a higher temperature than PEX cooling pipe or steel.
Perancangan Prototipe Turbin Angin Sumbu Horizontal Skala Laboratorium Dengan Inverter Najma Safienatin Najah; Arief Muliawan; Febria Anita
Jurnal Teknik Juara Aktif Global Optimis Vol. 1 No. 1 (2021): June
Publisher : STTI Bontang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (818.912 KB) | DOI: 10.53620/jtg.v1i1.7

Abstract

A horizontal axis wind turbine design research has been carried out using an inverter. This study aims to generate the output power generated by the generator through an inverter. So that the use of an inverter can turn on the 10 watt lamp. From the research results obtained turbine rotation varied between 1357 rpm to 2415 rpm producing a generator voltage of 3.05 volts to 4.61 volts and generator currents 32mA up to 49 mA. The inverter produces a voltage of 16.57 volts up to 20.46 volts and an inverter current of 0.60 amperes up to 0.48 amperes. The greater the rotation of the wind turbine turbine, the greater the generator voltage generated and so is the voltage of the inverter. While the current will increase as the turbine rotation increases and the inverse of the inverter current will decrease as the turbine rotation increases.
Pembuatan Biodisel dari Minyak Jarak dengan Metode TransesterifikasI Menggunakan Etanol Teknis dan Metanol PA Saripah sobah; Muhammad Naufal Ariq H; Siahaan Theresia
Jurnal Teknik Juara Aktif Global Optimis Vol. 1 No. 1 (2021): June
Publisher : STTI Bontang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (925.236 KB) | DOI: 10.53620/jtg.v1i1.8

Abstract

Increased fuel use can lead to air pollution and other environmental impacts. Substitution of fuel Oil with environmentally friendly fuel alternatives is one solution. Castor oil (Jatropha curcas L) contained in castor seeds can be processed into biodiesel with transesterification process. The most widely used alcohol in the manufacture of biodiesel is methanol. Methanol is made from a material that is not renewable. While ethanol from renewable materials and pure ethanol are expensive. In this study used campurn ethanol to reduce the use of methanol. The purpose of this study is to find out the optimum comparison of methanol-ethanol. The manufacture of biodicells is carried out by a 2-stage process, namely the esterification process and the transesterification process. The esterification process uses HCL catalysts. The transesterification process uses a comparison of methanol and ethanol with variations of 3:1,2:1,1:1,1:2 and 1:3. The catalyst used in the transesterification process is KOH 0.1%. The results showed that the optimum condition in the use of methanol: Technical Etahol is 2:1 within 30 minutes, yielding a yield of 56.1%. The quality test score of type weight and viscosity shows a value of 0.86-0.89 g/mL and 2.9-3.5 so that the results of the study are declared to pass the product test with density and viscosity test standards
Rancang Bangun Turbin Angin Untuk Pembangkit Listrik Tenaga Angin (Sebagai Alternatif Pembangkit Listrik Daerah Pesisir Pantai) Wildan Hamdani; Ahmad Yani; Toni Hendrawan. R
Jurnal Teknik Juara Aktif Global Optimis Vol. 1 No. 1 (2021): June
Publisher : STTI Bontang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (923.826 KB) | DOI: 10.53620/jtg.v1i1.9

Abstract

The basic working principle of a wind turbine is to convert mechanical energy from the wind into rotary energy on the blades, the turbine rotation is used to turn a generator to produce electricity. The wind turbine under study is a propeller wind turbine whose axis is placed horizontally. The purpose of this study was to determine the output power produced by the wind turbine. Methods The research was conducted using experimental methods. The results showed that the designed wind turbine was able to produce electrical power at wind speeds of less than 40 m/s, overall based on the research that the maximum power value occurred at 17:00 with a wind speed of 28 m/s the power generated was 0.054 Watt, while the lowest turbine output power occurred at 15:00 with a wind speed of 18 m/s turbine output power of 0.025 Watt.
Analisa Kerugian Head Akibat Perluasan Dan Penyempitan Penampang Pada Sambungan 90o Ahmad Yani; Ratnawati; Ardyanto Darmanto
Jurnal Teknik Juara Aktif Global Optimis Vol. 1 No. 1 (2021): June
Publisher : STTI Bontang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1786.505 KB) | DOI: 10.53620/jtg.v1i1.10

Abstract

PVC pipe (polyvinyl chloride), galvanized, and stainless steel are types of pipes that are widely used, especially for delivering clean water to people's homes or in the industrialized world. This research was conducted by collecting data such as: flow rate (Q), pressure height (h), pipe flow velocity (v), time (s), and head loss (H), data were collected and calculated to determine pressure loss, effect variations in discharge changes and loss coefficients. From the experimental results, it was found that for the narrowing of the cross section at a discharge of 25 liters / second the value of the head loss was greater, which was located in the galvanic pipe, namely 0.09568, then followed by a discharge of 20 liters / second the value was 0.06454 and a discharge of 15 ltr / second the value was 0 , 03723. While the smallest value in panampang narrowing lies in PVC pipe, at a discharge of 25 ltr / second the value is 0.05957, at a discharge of 20 ltr / second the value is 0.03989 and at a discharge of 15 ltr / second the value is 0.02303. Likewise in the expansion of the cross-section, the greatest value lies in the galvanized pipe. For a debit of 25 ltr / second the value obtained is 0.03526, a debit of 20 ltr / second the value is 0.02355, a debit of 15 ltr / second the value is 0.01352. While the smallest value is located on the stainless steel pipe, the value is 0.02688 for the flow rate of 25 liters / second, the value for 20 liters / second is 0.01811, the value for 15 liters / second is 0.01044.
Optimalisasi Kadar Asam Asetat Ananas Comosus l dengan Penambahan Induk Cuka Fitria Fitria; Mimin Septiani; Irhamni Nuhardin
Jurnal Teknik Juara Aktif Global Optimis Vol. 1 No. 1 (2021): June
Publisher : STTI Bontang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (604.909 KB) | DOI: 10.53620/jtg.v1i1.11

Abstract

Ananas comosus L. (Pineapple) is one of the superior fruit commodities in Indonesia. The amount of production in 2016 pineapples placed fourth after bananas, oranges and mangoes which amounted to 1.4 million tons/year. Pineapple production for East Kalimantan, Balikpapan city has an area of 8,572 hectares of pineapple with a production of 7,206 tons of pineapple. Pineapple skin contains 17.53% carbohydrates and 13.65% sugar. This led researchers to develop the manufacture of acetic acid from the skin waste of Ananas comosus L. The research method consists of materials used namely, pineapple skin, water, granulated sugar, yeast, vinegar, ammonium sulfate, oxalic acid, sodium hydroxide, pp indicators and aquades obtained from STTI Bontang laboratory. The working procedure of this study consists of 3 stages of the method: the first fermentation stage with the addition of Saccharomyces cerevisiae, the second fermentation stage with variations in the addition of the parent vinegar and the calculation of acetic acid levels with time intervals of 2 days /sample (days 16, 18, 20, 22 and 24). The third stage is carried out by alkaline method. Optimum results from research with the main variation of vinegar and fermentation time were obtained on the 20th day with the addition of a 2.3 mL vinegar master obtained a acetic acid content of 6.24 g/mL. Further researchers are expected to develop better analytical methods to make the concentration of acetic acid obtained more optimal.

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