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All Journal Jurnal Keteknikan Pertanian Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Litek : Jurnal Listrik Telekomunikasi Elektronika Jurnal Polimesin Jurnal Mesin Sains Terapan
Irwin Syahri Cebro
Politeknik Negeri Lhokseumawe
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Journal : Jurnal Polimesin

 1 
Design of Natural Convection Solar Dryer for Coffee Beans with Monitoring System Based on Internet of Things Nurdin Nurdin; Irwin Syahri Cebro; Azhar Azhar; Hendrawati Hendrawati
Jurnal POLIMESIN Vol 20, No 1 (2022): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v20i1.2613

Abstract

The process of monitoring the drying of coffee beans so far is still done traditionally so that the effectiveness of the drying process is still low. The IoT-based drying monitoring process is expected to provide better effectiveness and time efficiency. This research designs and manufactures a solar dryer with natural convection heat transfer for coffee beans equipped with an Internet of Things-based monitoring system. The purpose of this study is to develop the performance of a solar dryer with natural convection with the addition of an IoT-based monitoring unit. The research begins with a technical plan for the main components of the dryer. Components whose shapes, dimensions, and materials have been planned will be outlined in the form of detailed technical drawings. Detailed technical drawings will be a guide in the dryer manufacturing process. The main components of the dryer are solar collectors, drying chambers, and an IoT-based monitoring system. The solar collector will function to capture heat from the sun which will flow naturally into the drying room. An IoT-based monitoring system will capture the temperature and humidity (DFRobot DHT22 sensor) in the solar collector, drying room, and the environment of the dryer. In addition, a Bh1750 sensor to capture the intensity of the sun is also embedded in this monitoring system. This monitoring system will be connected to the internet network where the data will be sent to a cloud data server. The recorded data can then be downloaded using a mobile device or personal computer connected to the internet network. This IoT-based monitoring system was chosen so that performance data from the dryer can be monitored in real-time and online. The results of this study are a prototype dryer with a household capacity of 9 Kg equipped with an IoT-based monitoring system has been built and can be implemented properly
Analisa korosi pada heat exchanger e-4512 pt.arun ngl co Irwin Syahri Cebro; Sariyusda Sariyusda
Jurnal POLIMESIN Vol 1, No 1 (2003): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jop.v1i1.1397

Abstract

Heat Exchanger E-4512 adalah salah satu alat penukar panas yang digunakan pada PT. Arun yang digunakan untuk mendinginkan atau menurunkan temperature MCR (multi component refrigerant) dengan media pendingin air laut. Pada heat Exchanger E-4512 ini terjadi kerusakan yaitu korosi terutama pada bagian-bagian seperti tube side, tube sheet, channel dan channel cover. Jenis korosi yang menyerang yaitu korosi sumur (pitting corrosion). Korosi erosi (erosion corrosion) dan korosi galvanis (galvani corrosion). Kerusakan ini akan berkaibat fatal mengingat fungsi dari Heat Exchanger merupakan pendukung utama proses produksi. Makalah ini menganalisa penyebab terjadinya korosi dan membahas hal-hal yang dapat dilakukan untuk mencegah terjadinya korosi berdasarkan kasus di lapangan dan kajian teoritis.
Rancang bangun kopling cakar persegi dengan bantuan komputer (cad) Irwin Syahri Cebro
Jurnal POLIMESIN Vol 7, No 1 (2009): Februari
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jp.v7i1.1342

Abstract

Kopling cakar persegi dapat meneruskan momen dalam dua arah putaran. Parameter desain dari kopling cakar persegi sangat tergantung pada daya dan putaran yang akan diteruskan, faktor koreksi serta jenis bahan yang digunakan. Disain kopling cakar persegi secara manual disamping memberikan hasil yang kurang teliti juga sangat tidak efektif dalam penggunaan waktu. Penelitian ini bertujuan mengembangkan sistem CAD untuk menghitung dan menggambarkan kopling cakar persegi. Perancangan kopling cakar persegi dengan bantuan komputer (Computer Aided Design, CAD) diperlukan untuk menentukan parameter desain kopling cakar persegi serta pembuatan gambar kerja secara otomatis. Dengan sistem ini efesiensi waktu dan akurasi desain dapat lebih akurat dibandingkan dengan proses perancangan kopling cakar persegi secara manual. Struktur program yang dibangun terdiri dari bagian input data rancangan, bagian output parameter desainhasil perhitungan dan gambar kerja.Kata kunci : Kopling cakar persegi, parameter desain, gambar teknik. 
Investigation of the Mechanical Behavior of Laminated Composites Gypsum-Based Plastic Sack Waste Fiber Indra Mawardi; Samsul Bahri; Hamdani Nurdin; Irwin Syahri Cebro; Luthfi Luthfi; Zuhaimi Zuhaimi; Ismi Amalia
Jurnal POLIMESIN Vol 21, No 1 (2023): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i1.3275

Abstract

The existence of plastic waste, such as used plastic sacks in large quantities, is a crucial problem for the environment and health because of its very low biodegradability. Therefore, reusing plastic sack waste as reinforcement in gypsum composites is a major research issue. This study investigates the mechanical and physical properties of gypsum composites reinforced with fiber layers from plastic sack waste. Gypsum composites are produced using casting gypsum flour as the matrix and various fiber layers from plastic sack waste (1, 2, 3, 4) as reinforcement. Gypsum-based laminated composites were tested for density, flexural strength, and compression. The behavior of mechanical, physical, and damage properties is studied to see its suitability as a building material. The results showed that gypsum composites' density decreased with increasing sack fiber layers. The density of gypsum composites ranges from 1064-1199 kg/m3, with a maximum value in samples with 100% gypsum. The flexural strength of gypsum composites ranges from 2.21-4.10 MPa, and the compressive strength ranges from 3.5-6.66 MPa. Increasing the number of layers of plastic sack fibers reduces density, flexural strength, and compressive strength. However, all the mechanical properties of gypsum composites met the requirements of the EN 13279-2 standard. Failure of fiber delamination with the resulting matrix is the main cause of the decrease in mechanical strength
Co-Authors Amalia, Ismi Azhar Azhar Desrial Hamdani Hamdani Hamdani, Hamdani Hendrawati Hendrawati Indra Mawardi indra Mawardi Luthfi Luthfi Marzuki Marzuki Mayanda, Sari MUHAMMAD RIZAL Nurdin Nurdin Samsul Bahri Sariyusda, Sariyusda Tineke Mandang Wawan Hermawan Yassir Yassir Zuhaimi Zuhaimi