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INDONESIA
JURNAL POLI-TEKNOLOGI
Published by Politeknik Negeri Jakarta
ISSN : 14122782     EISSN : 24079103     DOI : https://doi.org/10.32722/pt.v20i1
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
Poli-Teknologi Journal is a journal, which began publication in 2002, published by the Research and community service Unit of Politeknik Negeri Jakarta. It starts from Volume 1 Number 1 in January 2022 for printed version; ISSN (print) 1412-2782 and ISSN (online) 2407-9103. Poli-Teknologi Journal is a series of scientific publications in applied science and technology area from the perspective of a multi and interdisciplinary studies and it is published 3 times in year.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 410 Documents
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PERANCANGAN SISTEM PENJADWALAN SEMINAR PROPOSAL BERBASIS WEB DI JURUSAN TEKNIK SIPIL POLITEKNIK NEGERI JAKARTA MENGGUNAKAN FRAMEWORK CODEIGNITER Alif Nurrizki Pangestu; Kussigit Santosa
Jurnal Poli-Teknologi Vol. 20 No. 3 (2021)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v20i3.4441

Abstract

Scheduling seminar proposals at the Department of Civil Engineering, Politeknik Negeri Jakarta, the system currently used is manually using Microsoft Excel software, so the possibility of conflicts and delays in the preparation of the Proposal Seminar Schedule are often experienced. In this study, a web-based proposal seminar scheduling application with the name PSPTS will be designed to make it easier for students to submit files without having to go to campus, department administrations do not have to type data manually, and the head of the study program can arrange schedules online. Using Waterfall as the method, PHP (Hypertext Preprocessor) for the programming language base, Codeigniter for the framework and for data storage using MySQL. With the existence of a website with the name PSPTS, it can improve the quality and service at the Department of Civil Engineering at Politeknik Negeri Jakarta.   Keywords : Scheduling, Proposal Seminars, Codeigniter, Waterfall.  
PENGARUH PERUBAHAN TEMPERATUR KABIN TERHADAP KINERJA PADA SISTEM REFRIGERASI FREEZE DRYING wardika wardika; Aa Setiawan; Tri Wulan Fitriyani
Jurnal Poli-Teknologi Vol. 20 No. 3 (2021)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v20i3.4461

Abstract

Tujuan penelitian ini adalah untuk mengetahui kinerja dari mesin freeze drying dengan variasi perubahan temperatur kabin. Metode yang digunakan dalam penelitian ini adalah dengan membandingkan langsung perubahan setpoint pada temperatur kabin -10oC, -15oC dan -20oC terhadap kinerja pada sistem refrigerasi mesin freeze drying dimana dimensi kabin 40cmx40cmx40cm, dengan beban produk irisan buah mangga sebesar 3 kg. Berdasarkan hasil pengolahan data yang dilakukan pada freeze drying didapat kinerja sistem pada COP aktual temperatur kabin -10oC sebesar 2,7, temperatur kabin -15oC sebesar 2,8 dan temperatur kabin -20oC sebesar 2,7. Efisiensi sistem pengeringan beku dengan variasi temperatur masing-masing -10oC, -15oC, dan -20oC sebesar 63%, 62,7% dan 63,1%,Kata kunci : freeze drying, temperatur, Kinerja, Kualitas produk.
KARAKTERISTIK PRODUK CAIR CO-PYROLYSIS SAMPAH PLASTIK DAN PELUMAS BEKAS Ilyas, Dede Muhamad Ilyas; Mustofa Kamal, Dianta; Amatullah Fatin, Shafa; Susanto, Iwan; Prasetya, Sonki
Jurnal Poli-Teknologi Vol. 23 No. 2 (2024)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v23i2.4997

Abstract

The increasing usage of plastic is proportional to the amount of plastic waste today. The plastic usage makes the human live easier especially for packaging purposes. However, it also has a negative impact to the environment. This is due to it cannot easily decompose. Therefore, it can reduce the level of soil fertility. Besides plastic, lubricant waste from motor vehicles can induce an environmental problem as well since it is categorized of hazardous material (B3) waste. Currently, the use of plastic waste has been widely carried out by correlating into liquid fuel through thermal cracking or pyrolysis treatment. It produces liquid and it can be used as an alternative liquid fuel. This study uses the co-pyrolysis method for treating the used plastic waste with used lubricants. The composition ratios used are 10:0, 10:2, 10:4, 10:6, and 10:8. The highest acquisition of liquid products was in the composition ratio of 10:6 as much as 24.67% with a calorific value of 11015.33 cal/g. Then the highest calorific, density, and viscosity values were obtained, namely at the 10:8 composition ratio of 11061.67 cal/g, 0.8906 g/mL, and 0.927 cSt. It was concluded that the mixing of used lubricants in the co-pyrolysis of LDPE plastic waste was able to increase the calorific value of the liquid product produced.
Desain Alat Kompaksi Untuk Produksi Glass Cosindo (Coin Sejarah Indonesia) Dengan Material Serbuk Dari Sampah Botol Kaca Muhamad; Reival Rey Yusti; Arvian Iswahyudi
Jurnal Poli-Teknologi Vol. 22 No. 3 (2023)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v22i3.5724

Abstract

Currently the use of glass material as bottles or beverage packaging is decreasing, but the bottle waste that was used in previous time is still left. This become problems in society. Processing that is usually done by melting glass bottles, but not all can be done with this method. because of this, a new method for processing glass bottle waste deserves to be researched and applied. This study aims to design a tool that can be used for printing glass materials using the compaction method. The compacting tool is designed to print glass powder with a pressure of 5 tons. By making this tool, the variety of glass processing will increase. In addition to glass materials, this tool can also be used to print other materials. This tool will be designed using Solidworks software. The design process begins with manual calculations for construction strength and material selection, then 3D models and 3D assemblies are made. The process ends by simulating the software. The results of the simulation show the strength of the tool construction based on the planning and calculations that have been done.
Perancangan dan Implementasi Sepeda Motor Trail Listrik untuk Pengembangan Produk di PT. LEN Industri (Persero) Ade irma Wantini; Ganis Sanhaji; Rizal Mi'raz; Wahid Lalang Buana
Jurnal Poli-Teknologi Vol. 22 No. 3 (2023)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v22i3.5775

Abstract

Abstrak: Sepeda motor merupakan sarana transportasi paling populer di Indonesia, namun seiring dengan hal itu isu menipisnya minyak bumi semakin santer ditambah lagi sepeda motor dengan BBM menjadi penyumbang gas karbon sebanyak 50 % dari keseluruhan gas karbon dunia. Solusi alternatif dari permasalahan tersebut adalah penggunaan Energi Baru Terbarukan (EBT) di bidang transportasi salah satunya sepeda motor listrik. Selain itu pengembangan sepeda motor listrik telah ada dalam peraturan presiden no. 55 tahun 2019. Pada artikel ini memuat perancangan sepeda motor trail listrik dengan motor listrik 3000 Watt dan Baterai 72V Adapun tahapan metode yang digunakan mulai dari perencanaan konsep yaitu menentukan rumusan masalah dan tujuan, dilanjut dengan perolehan data dari wawancara dan studi literatur, lalu dilanjut ke proses desain, implementasi atau proses perakitan komponen dan yang terakhir proses uji coba dan analisis data hasil. Proses uji coba dilakukan dengan 3 jenis uji coba yaitu uji coba berdasarkan fungsional instrument dengan hasil akurasi 100% berfungsi dengan baik dari 16 fitur yang ada, uji coba dengan dyno test menghasilkan torque maksimal sebesar 21 N/m saat tarikan gas pertama dan kedua, horse power sebesar 13,1 HP pada tarikan gas pertama, dan kecepatan maksimal sebesar 94,9 kph, dan uji coba langsung dijalan dengan 2 penumpang menghasilkan kecepatan maksimal 67,82 Km/jam dengan kecepatan rata-rata sebesar 20,66 Km/jam dan konsumsi energi sebesar 43 Wh/Km pada pengujian pertama. Dan menghasilkan kecepatan maksimal 28,35 Km/jam dengan kecepatan rata-rata 8,69 Km/jam dan mengkonsumsi energi sebesar 39 Wh/km pada pengujian kedua. Penelitian ini diharapkan dapat menjadi acuan untuk penelitian-penelitian selanjutnya sehingga dapat lebih dikembangkan dengan menggunakan komponen dan metode lain. Kata kunci: 3 KW,72 V, Dyno Test, Perancangan, Sepeda motor listrik.
Optimalisasi Kinerja Panel Surya Berdasarkan Waktu Tunda Pergerakan Solar Tracker Edwin Kamal; Adi Setiawan; Sri Yatmani; Ulfah Khairiyah Luthfiyani
Jurnal Poli-Teknologi Vol. 22 No. 3 (2023)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v22i3.5840

Abstract

Secara umum energi surya merupakan energi yang berasal dari sinar dan panas matahari yang kemudian diubah menjadi energi listrik. Energi elektromagnetik yang dipancarkan oleh matahari ini bersifat terus menerus dan ramah lingkungan karena tidak menimbulkan pencemaran apapun di dunia ini. Oleh sebab itu, ketika meluasnya kesadaran akan lingkungan mulai muncul, energi surya menjadi alternatif paling potensial sebagai sumber energi terbarukan. Meskipun energi surya merupakan sumber energi yang baik, dibutuhkan metode terbaik untuk meningkatkan efektifitas panel surya dalam menyerap energi matahari dengan memastikan posisinya selalu tegak lurus terhadap arah sinar matahari. Salah satu metodenya adalah dengan menggunakan solar tracker yang dapat membuat panel surya bergerak secara dinamis mengikuti arah datangnya sinar matahari. Telah banyak dikembangkan desain sistem solar tracker dan metode pengujiannya untuk mendapatkan penyerapan energi surya secara maksimal dengan menggunakan pelacak surya secara otomatis. Dalam penelitian ini digunakan solar tracker yang dibuat dengan modul Arduino Mega 2560 sebagai otak komputer yang memproses data, board NodeMCU dan bahasa pemrograman PHP sebagai piranti utama dalam sistem pemantauan, motor servo sebagai penggerak, dan dua buah Light Dependent Resistor (LDR) sebagai sensor untuk melacak pergerakan matahari dengan variasi pergerakan solar tracker yang dilakukan setiap 1, 5, 10, dan 15 menit. Hasil penelitian menunjukkan bahwa energi optimum dari hasil perbandingan antara panel surya statis dan dinamis adalah dengan men-setting pada delay 10 menit dengan perbandingan 9,9% lebih tinggi daripada statis.
Analisa Perbandingan Komposisi Agregat Halus Pasir Kuarsa dan Fly Ash pada Beton Geopolymer Berbasis Binder Kalium Hidroksida Terhadap Kuat Tekan dan Daya Serap Beton Indah Rosanti; Rona Ariyansyah; Satriyo Utomo; Lelly Marini; Indah Permatasary; Mega Septiani Mega
Jurnal Poli-Teknologi Vol. 23 No. 1 (2024)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v23i1.6037

Abstract

The development of concrete construction has the impact of increasing cement production anddamaging the balance of nature because every 1kg of cement production produces CO2 emissionsof 0.5 - 0.7 kg. To reduce this iMPact, geopolymer concrete innovation was formed. Geopolymerconcrete is formed from the polymerization reaction of silica (Si) and alumina (Al) compoundsfound in quartz sand and fly ash waste from burning coal which has binding properties like cement.Fly ash reacts with alkaline activators of potassium hydroxide (KOH) and sodium silicate(Na2SiO3). The research method used is a quantitative method with experimental studies in thelaboratory. Geopolymer concrete mix design refers to previous research. Geopolymer concrete testobjects are cylindrical with a size of 100 x 200 mm. There are 2 variations of the composition ofalkali activator forming geopolymer concrete, namely 8M KOH concentration, alkali activatorratio of 1:1 mol ratio and 10M KOH, alkali activator ratio of 1:1.5 mol ratio. The composition offly ash and quartz sand for each binder was 20%:80%, 40%: 60%, 50% : 50%, 60% : 40%,80%:20% with a total of 36 samples. Testing compressive strength and absorption at the age of 14and 28 days. The results of the compressive strength obtained ≤ 50 MPa where the concrete doesnot include high quality concrete and not for the needs of precast construction. The results ofaverage concrete absorption reached 3,72%, which already met the permissible absorption of amaximum of 10%. Keywords: Fly Ash, Quartz Sand, Potassium Hydroxide, Geopolymer Concrete.
Perancangan Pile Cap Menggunakan Metode Strut and Tie Model Wijaya, Annisa; Sukarman
Jurnal Poli-Teknologi Vol. 23 No. 2 (2024)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v23i2.6076

Abstract

The design of the pile cap structure generally involves a conventional method that assumes that all areas are linear. The reality distribution strain in cross-section structure pile cap experiences non-linear strain. So it is necessary method close the analysis behavior pile cap actually, that is with the method Strut and Tie Model referring to SNI 2847:2019. Therefore, done study with the formulation problem How designing a reinforcement pile cap with three poles with the method Strut and Tie Model as a comparison configuration reinforcement and requirements material with method conventional. Research methods are done with stages studies literature, data collection, modeling form strut and tie, analysis calculation, up to detailed drawing of the reinforcement pile cap. Comparison configuration reinforcement flexible on method Strut and Tie Model follow the modeling lines element tie, whereas method was conventionally installed with spread reinforcement evenly throughout area pile cap. The strut and Tie Model Method consists of elements 1 (3D16), elements 2 and 3 (4D16) with a total length of reinforcement bending of 18884 mm. The method conventional consists of X direction (6D16) and Y direction (6D16) with a total length of reinforcement bending of 16530 mm. This matter proves that the strut and tie model produces more lots that need reinforcement amounting to 14.24%.   Keywords: Pile Cap, Three Piles, Strut and Tie Model, SNI 287-2019, Flexural Reinforcement
Utilization of Single Phase Pure Sine Wave Inverters in Electrical Energy Conversion Systems for Solar Panels with Variable Loads Yudi Wijanarko; Ekawati Prihatini; Selamat Muslimin; Nyayu Latifah Husni; Muhammad Khoirun Nadir
Jurnal Poli-Teknologi Vol. 23 No. 1 (2024)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v23i1.6478

Abstract

The inverter built in this research is used to convert direct current into alternating current with a size of 3000 watts, which has a DC input voltage of 24 volts. This inverter has a large capacity and can generate enough electricity to run different huge electrical devices or several units at once. It's made utilizing energy-efficient technology to cut down on energy waste during conversion. Furthermore, safeguards such voltage surge and overcurrent prevention guarantee the operational safety of the inverter. The inverter was built using the PWM method and variable loads (resistive load, inductive load and capacitive load), with the aim of evaluating the inverter's ability to handle resistive, inductive and capacitive loads and to see how the inverter responds to load changes dynamically. Based on observations and calculations, higher loads are positively correlated with higher inverter power and efficiency. The inverter has a max output of 664.62 watts and 229 Volt is the output voltage attained. This demonstrates that the EGS002 PSW inverter produces AC voltage of high quality with precise and steady characteristics.
Trip Generation Model of Sawah Baru Residential, Ciputat District, South Tangerang Municipality Adinda Rifqi Aprilliana Haryanta; Verdy Ananda Upa; Eka Apriliasi
Jurnal Poli-Teknologi Vol. 23 No. 1 (2024)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v23i1.6503

Abstract

Traffic congestion in Ciputat area due to increasing of trip generation unsupported by transportation facilities and adequate road network. Generally, solution that implemented is road network capacity upgrades with widening based on trip generation analysis. The purpose of this research to determine trip generation model, total of trip generation, factors that influence of trip generation, and characteristics of trip users on Sawah Baru residence Ciputat Tangerang Selatan. The research method used by household interview survey about number of family members, amount of income per month, number of people working, number of students, number of vehicle owners, amount of transportation costs per month, also trip data from family members daily. Data that has been collected then analyzed with multiple linear regression method used SPSS 25.0 application with significant level 95%. Trip generation model of Sawah Baru residence can be attained Y = 0,450 +0,833 X1 with R2(R square) = 0,833. Total of trip generation that is generated by Sawah Baru residence = 333 trip/day. Based on t Test with significant level <0,05, therefore an influential factors are number of family members, amount of family income, number of people working, number of students, vehicle owners, and transportation cost.

Page 40 of 41 | Total Record : 410

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