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Andy Eka Saputra
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INDONESIA
TEKTAN
Published by Politeknik Negeri Lampung
ISSN : 20851278     EISSN : 27453472     DOI : https://doi.org/10.25181/tektan
Core Subject : Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Mechanical Engineering
Jurnal Tektan merupakan salah satu jurnal di Politeknik Negeri Lampung yang  menampung hasil penelitian berupa artikel ilmiah yang berkaitan dengan Ilmu Keteknikan Pertanian, Mekanisasi Pertanian, Teknik Kimia, Teknik Sumberdaya Lahan dan Lingkungan,dimana artikel tersebut belum pernah dipublikasikan. Jurnal TekTan di terbitkan oleh Unit Penelitian dan Pengabdian Kepada Masyarakat Polinela Unit 3x dalam setahun. Jurnal Ilmiah Teknik Pertanian Ini diterbitkan oleh Unit Penelitian dan Pengabdian Kepada Masyarakat Polinela Sebagai Wadah Bagi Dosen, Mahasiswa dan PLP untuk mempublikasikan karya penulisannya. Jurnal ini sempat mengalami Jeda Pengaktifan Selama 3 tahun mulai terbitan 2016 sampai Agustus 2019, hal ini disebabkan karena kekosongan tim pengelola Jurnal. Kemudian dengan manajemen pengelolaan yang baru maka diterbitkan kembali untuk volume 11 No. 3 pada tanggal 16 Desember 2019
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 80 Documents
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Pemodelan Alat Peraga Praktikum Sistem Pembangkit Listrik Tenaga Air Pico Hydro dengan Turbin Propeller Type Open Flume Tc 60 Nurjan Didik Purwanto; Sugiarto Sugiarto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 12 No 1 (2020)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v12i1.1670

Abstract

Modeling of Practical Teaching System for Pico Hydro Hydroelectric Power Plant with Open Flume TC 60 "Turbine Propeller Type is a practical teaching aid made in order to increase diversity and practicum facilities for students of Agricultural Mechanization study programs in the Energy and Electricity Agriculture course. At the same time this Practical Modeling introducing various types of renewable energy (reneable energy) to the academics at the Lampung State Polytechnic, besides that, the making of this tool also has the following objectives:-   Make modeling of laboratory scale pico hydro power generation systems with Open Flume TC 60 Type Propeller Turbines.-   Here the tool that students are expected to be able to design  a pico hydro power plant.-   Increase the diversity of practicum equipment in the Agriculture Mechanization laboratory.-   Streamlining the process of teaching and learning activities in the laboratory.Thus this tool is expected to contribute to the world of education, especially for students of the Lampung State Polytechnic Mechanization of Agriculture study program. Keywords: pico hydro hydroelectric power, and reneable energy
Modifikasi Alat Kuat Tekan Paving Block Sebagai Alat Cetak Hidrolik Andy Eka Saputra
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 12 No 1 (2020)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v12i1.1671

Abstract

The Paving Block industry is one of the important industries, as a driving force for the economy of an area, one of which is in Bandar Lampung, especially in the Rajabasa district. The problem that is often faced by consumers is the low quality of the paving that is used, which is often cracked, broken and brittle so that it interferes with all the activities carried out in the paving block application in use, this is due to the quality of the materials that do not meet standards and the manufacturing process is not quite right. The objectives of this research are to test the performance of the modified molding tools and test the paving blocks produced using the tools before modification with those that have been modified. Based on the results of research conducted at the Lampung State Polytechnic in 2019 for 6 months, it shows that the compressive strength of paving block molded steel plates with a side length of 20 cm, a width of 6 cm and a height of 8 cm with a plate thickness of 5 mm can withstand existing leaks and can be used. with hydraulic molding equipment modified on the CTM machine. In the print results with a pressure of 50 kg / cm2, no leaks were found on the printing machine and at a pressure of 100 kg/cm2, the printing press was still able to withstand the leak, so it could be used as a printing tool in the modification of hydraulic molding devices on the CTM machine. Modification of paving block formers provides paving block results with class B quality according to the Indonesian National Standard Agency, 1996. Keywords: paving block, modified compressive strength, steel plates
Modifikasi Mesin Las Titik Portable dengan Menambahkan Dudukan dan Pedal untuk Menunjang Kegiatan Pratikum Mahasiswa Subarjo Subarjo; Tri Widodo
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 12 No 1 (2020)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v12i1.1672

Abstract

Welding is one way to connect two metal parts permanently by using heat power. This heat power is needed to melt the basic material to be connected and welding wire as filler material. After it has cooled and frozen, a strong and permanent bond is formed. One way that is often recommended in this industry is spot welding. Welding point in the Lampung State Polytechnic Metal and Automotive Laboratory, the operating system is done by squatting so that it is easily tired. So with that conditions this research is modified into a table spot welding by modifying the lever with a pedal.  The objectives of this research are comparing the working time of a portable spot welding machine with a table spot welding machine using the pedal system, to get the efficiency of welding work time using a table spot welding machine using the pedal system, and to reduce work fatigue. The result showed for the pedal point table welding machine, it takes 0.512 minutes for 0.8mm plates, while for 1.0mm plates it takes 0.61 minutes, while for portable welding machines it takes 1.185 seconds for 0.8 plate thickness mm and 1,314 seconds for the 1.0 mm plate. Keywords: welding, spot welding, welding wire
Evaluasi Dimensi Box Culvert pada Saluran Drainase Jalan Arteri Soekarno Hatta (Studi Kasus: Ruas Untung Surapati- Hajimena) Aniessa Rinny Asnaning; Iskandar Zulkarnain
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 12 No 1 (2020)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v12i1.1674

Abstract

Flow system engineering using box culvert had done in arterial road Soekarno Hatta section Untung Surapati-Hajimena, precisely on the Way Kandis river channel. As population growth, on the box culvert’s upstream, had frequently been flooding when it rains with high intensity. It could predict that run off discharge was increased as an impact increasing runoff coefficient due to the growth of the built area in its upstream. It indicated that the box culvert dimension is not suitable to serve runoff discharge. Therefore the evaluation is needed to assess whether the dimension of box culvert was still capable of serving the flowing runoff discharge. The existing box culvert dimension could not serve the runoff discharge in 10, 20, and 25 year return periods are 10.13 m3/s, 11.07 m3/s, dan 11,37 m3/s.It was recommended to use precast concrete (n = 0.03)and 0.015 in slope.The evaluation shown that to serve runoff discharge in 10, 20, and 25 year return period, minimum needed box culvert with dimensions are 1.9 x 1.9 (m), 2.0 x 2.0 (m), and 2.0 x 2.0 (m). Refer to it, then recommended the dimension of box culvert is 2.0 x 2.0 m. It could install more than one with an adjustment dimension if the slope were difficult to reach in the recommended dimension Keywords: river, flood, discharge, box culvert.
Upaya Penurunan Emisi Gas Buang pada Mesin Bensin Sistem Bahan Bakar Konvensional Menggunakan Catalytic Converter Almunium untuk Kenyamanan Praktikum Erman Erman; Sugiarto Sugiarto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 12 No 1 (2020)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v12i1.1675

Abstract

To reduce air pollution containing toxicity from the otto engine of a conventional fuel system (carburetor), an internal combustion device is used called a catalytic converter. Catalityc Converter uses the function to reduce levels of Hydrocarbon (HC), Carbon Monoxide (CO), and Nitrogen Oxide (NOX) emissions by oxidizing and reducing these substances to CO2, H2O and N2 which are environmentally friendly. However, the price is expensive and difficult to  get it, not all motor vehicles use this technology. Because the catalyst is made of precious metals such as Palladium, Platinum and Rhodium. One of the efforts made is to make catalyst from Almunium Al material, which is easily obtained and the price is relatively cheap. This study aims to determine changes in emission levels between motor vehicles using Catalytic Converters made from aluminum plates and without using Catalytic Converters. The method used is an experimental method by comparing the results of emissions testing before passing the Catalytic Converter and after passing the Catalytic Converter. The research process begins with the design of the Catalytic Converter Chasing Design, Catalyst Manufacturing and testing that consists of testing without Catalytic Converter and with Catalytic Converter which ends with data analysis and conclusion drawing.From the test results There is a decrease. • HC gas emission have decreased quite well by showing a percentage reduction of 20,36%, compared to the absence of a catalyst. • CO gas emission have decreased very well by showing a percentage reduction of 75%, compared with no catalyst. • CO2 gas emission decreased sufficiently by showing a percentage reduction of 3,16% • O2 has increased 32,32%. Keywords: catalytic converter, almunium gas emussions
Kombinasi Proses Presipitasi dan Adsorpsi untuk Menangani Limbah Bahan Berbahaya Beracun (B3) Hasil Kegiatan Analisis di Laboratorium Analisis Polinela Ismadi Raharjo; Didik Kuswadi
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 12 No 2 (2020)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v12i2.1896

Abstract

The objectives of this research to determine the combination of the process of precipitation and adsorption in reducing the content of pollutant metals in the hazardous waste category B3 (hazardous toxic substances) produced at the Polinela Analysis Laboratory. The study was conducted in May to November 2019. The results obtained from 3 (three) times of sampling in May 2019 obtained a description of the characteristics of heavy metal content in wastewater in the form of Aluminum (Al) an average of 1.59 ppm, iron content ( Fe) an average of 9.73 ppm and Cadmium (Cd) an average of 0.022 ppm. From these results it can be seen that the wastewater containing Al and Fe has passed the threshold quality standard of waste water that is allowed to be discharged into water resource (PP No.82 of 2001), while the Cd content is still below the threshold. Furthermore, through the precipitation process with Ca (OH)2 0.8 M and adsorption using activated charcoal with contact time of 3 (three) hours the content of pollutants in wastewater can be reduced to 0.92 ppm for Al metals and 0.1 ppm for metals Fe, so that it is below the standard quality of waste water that is allowed to drain in water. Keywords: adsorption, precipitation, quality standard
Kajian Waktu Irigasi pada Tanaman Selada (Lactuva Sativa) Organik Untuk Budidaya Tanaman dengan Naungan dan Tanpa Naungan di Yayasan Bina Sarana Bakti Cisarua Bogor Desi Novalia; Muhammad Idrus; I gde Darmaputra
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 12 No 2 (2020)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v12i2.1901

Abstract

The Bina Sarana Bakti Foundation (YBSB) implements an organic farming system, which is an agricultural management system with a terrace design with permanent beds that can ecologically (environmentally) improve land quality, provide stable and sustainable yields and income into the future. To provide water for plants so that organic farming can take place throughout the season, both in the rainy season and in the dry season, water reservoirs are built using existing water sources. Utilization of water in the cultivation of organic lettuce at the Bina Sarana Bakti Foundation is carried out with 2-level irrigation hose treatment, namely the interval of providing irrigation water for 3 days and 4 days. Data analysis used t test at 5% real level. The results showed that the theoretical amount of water for lettuce at the Bina Sarana Bakti Foundation was 714 l/bed/season which was almost the same as the actual water use of lettuce with an interval of 3 days of irrigation water including additional liquid fertilizer from rabbit urine. + water in open land in shade is 720 l/bed/season, however, it is much lower than the interval of providing irrigation water for 4 days in open land without shade, namely 4,980 l/bed/season. The production of lettuce in shade with an interval of 3 days of 30.4 kg/bed/season was much greater than the production of lettuce without shade with an interval of 4 days of irrigation water, which was only 24.7 kg/bed/season. The productivity of irrigation water for shaded lettuce with the provision of irrigation water at an interval of 3 days of irrigation is 42.22 kg/m³, much higher and more effective than lettuce without shade with an interval of 4 days of irrigation which is only 4.96 kg/m³. Keywords: irrigation time interval, lettuce plants, no shade, shade, and water productivity.
Rancang Bangun Mesin Penebar Pakan Ikan Berbasis Programmable Logic Controller Sukma Ardiyan; Diky F; Winarto Winarto; Ridwan Baharta
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 12 No 2 (2020)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v12i2.1907

Abstract

The fish feed spreader machine is a feeding tool that is made to facilitate fish breeders in feeding fish. The fish feed spreader is specially programmed to provide fish feed according to the schedule and the desired dose. The purpose of making this tool is to design a fish feed spreader machine based on the logic controller programmale, and to test the performance of the designed fish feed spreader machine. The results showed that the average feed expenditure was 2.66 kg for a duration of 40 seconds. Then for the farthest throw of feed is 7.5 meters, while for throw of feed that is evenly distributed it has a distance of 5 meters with a spread width of 5.85 meters, and the angle of spread of feed is 90º.
Modifikasi Oven Biasa Menjadi Oven Vakuml Subandi subandi
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 12 No 2 (2020)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v12i2.1908

Abstract

The limited quantity and types of facilities for practicum, independent business projects and research, both lecturer and student research, is a problem that often arises and requires solutions to overcome it, one way to overcome the problem of limitations in types of practicum facilities is to modify existing equipment so that it can be done. used for other functions in accordance with the demands of the development of student and lecturer research studies. Modification of an ordinary oven into a vacuum oven is a set of drying ovens that are coupled with a suction pump and equipped with a vacuum gauge to measure the level of vacuum. A vacuum oven is a drying device with a low temperature, with the working principle in a vacuum that the boiling point of moisture is lower than the boiling point in atmospheric conditions so as to speed up the drying time and reduce the amount of damaged nutrients in the dried material due to drying. This drying method is suitable for materials that have high temperature sensitivity or are volatile due to their short drying time, one of which is food ingredients. At high temperature drying, the vitamin content in food is easily degraded and damaged. The modified vacuum oven can be used to dry materials from the types of leaves, fruit and tubers that were thinned using a temperature of 60°C, a vacuum level of -0.5 atm for 2 hours.
Modifikasi Solar Water Destiler Dengan Menambahkan Unit Pemanas Berenergi Solar Cell Iskandar Zulkarnain; Kelik Istanto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 12 No 2 (2020)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v12i2.1909

Abstract

Increasing the heat energy in the evaporator box from the Water Solar Destiler, by adding a wire heater aims to increase the heat energy in the evaporator box so that it will speed up the evaporation process in the evaporator box. The more liquid that is broken down due to heat energy into water vapor, the more discharge will be produced. Based on the results of the observations made, the addition of a wire heater in the evaporator city with AC electricity generated by solar panels, increased the purified water by 248.78%, from 1745 ml to 4341 ml, with the thickness of the water being purified as thick as 1 cm which was dried in the sun. for 10 hours starting from 07.00 WIB to 17.00 WIB.

Page 7 of 8 | Total Record : 80

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