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All Journal ELKHA : Jurnal Teknik Elektro Semesta Teknika Jurnal Pengabdian kepada Masyarakat Vokasi
Hadimi Hadimi, Hadimi
Politeknik Negeri Pontianak
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Public Health Social Sciences Other

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Rancang Bangun Model Turbin Pelton Mini Sebagai Media Simulasi/Praktikum Mata Kuliah Konversi Energi Dan Mekanika Fluida Hadimi, Hadimi; Supandi, Supandi; Rohermanto, Agus
Jurnal Semesta Teknika Vol 9, No 1 (2006): MEI 2006
Publisher : Jurnal Semesta Teknika

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Abstract

This Research is conducted in Pontianak state Polytechnic using test-drive method based on literature. The step are scheme/ turbine design, making and repairing in order to get a better pelton turbine. The main objective of this research is to provide facility for energy conversion and fluid mechanism practice which is limited in Mechanical Engineering Department so that it is hoped that it will contribute positive effects on students ability in that field. The construction and specification of pelton turbine model resulted of this research as follows; ( 1) Type Pump: Jet propulsion Pump, with the energy input 500 Watt, head pump 55 m, and debit 30 L / minute. ( 2) Generator energy 500 VA and Rpm 1500 rpm, 50 Hz. ( 3) Runner specification: The sum of buckets / sudu is 8 ( single and double), runner diameter 17 cm, out side diameter 44 cm, the width of bucket 6 cm, the length is 14 cm, and pitch pelton wheel diameter is 30 cm. ( 4) Nozzle diameter is 20 mm. The result of research on this pelton turbine model shows of water kinetic energy into electrical energy resulted by pelton turbine, and the bucket type design as well as the sum influence the rpm and voltage gained.
Pengaruh Perubahan Kecepatan Pemakanan Terhadap Kekasaran Permukaan Pada Proses Pembubutan Hadimi, Hadimi
Jurnal Semesta Teknika Vol 11, No 1 (2008): MEI 2008
Publisher : Jurnal Semesta Teknika

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Abstract

 This research done to know existence of transformation influence of feeding speed at turning process to surface roughness of work substance. Specimen material is ST 37 with Ø 30, 40, 50 and 70 mm, with transformation of feeding speed 0,05, 0,069, 0,088, 0,125 and 0,17(mm/rev), depth of feed 0,2 mm, and speed of revolution of engine 950 rpm. Then the several assaying of surface roughness level of the specimen and calculation statistic by using one way variant analytical method based on data result of assaying. Result of research indicates that existence of influence significant to surface roughness value caused by transformation of feeding speed at specimen turning process Ø 30, 40, 50 and 70 mm, ST 37 material with depth of feed 0,25 mm and revolution of engine 950 rpm. Average of smallest roughness value is at Ø 30 mm yielding best surface roughness. This thing indicates that feeding speed and substance diameter lathed influential to surface roughness value.
Desain Dan Pembuatan Dapur/Tungku Pemanas Untuk Kerajinan Pandai Besi Untuk Meningkatkan Kualitas Produk Rusadi, Rusadi; Hadimi, Hadimi; Karyadi, Edi
ELKHA : Jurnal Teknik Elektro Vol. 10 No. 2, October 2018
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (646.241 KB) | DOI: 10.26418/elkha.v10i2.26330

Abstract

Bisnis kerajinan besi adalah salah satu bisnis yang dapat berkembang seiring dengan perkembangan pertanian dan perkebunan.Namun perkembangannya mengalami kendala karena penggunaan teknologi manufaktur yang bersifat turun temurun sehingga kualitas produk yang dihasilkan menjadi rendah dan tidak mampu bersaing dengan produk luar. Produk kerajinan besi dalam bentuk alat pertanian dan perkebunan, sebenarnya dapat ditingkatkan kualitasnya dengan memperhatikan beberapa hal, yaitu bahan baku yang digunakan, pengaruh proses pembuatan dan pengerjaan serta proses pembuatan. Untuk alasan inilah peneliti dalam hal ini mencoba melakukan penelitian dalam bentuk tungku desain yang diharapkan dapat meningkatkan proses dan perlakuan panas sehingga menghasilkan peralatan pertanian dan produk perkebunan yang memiliki kualitas tinggi dalam hal ini sifat mekanik dan produksi yang berkualitas. biaya lebih murah.
Metrological Analysis of Sphericity Geometry to Lathe Conditions at the Mechanical Technology Laboratory of the Department of Mechanical Engineering Politeknik Negeri Pontianak Karyadi, Edi; Rusadi, Rusadi; Hadimi, Hadimi; Widayanti, Tri
Vokasi: Jurnal Publikasi Ilmiah Vol 18 No 2 (2023): Vokasi
Publisher : Politeknik Negeri Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31573/jv.v18i2.683

Abstract

This research was conducted on the premise that the age of using lathes in the Mechanical Technology Laboratory of the Department of Mechanical Engineering Pontianak State Polytechnic has been more than 30 years since this Polytechnic was established. It is predicted that the resulting workpiece is not exactly sized by the tolerance limit given to students. This research was conducted by measuring geometry (geometric metrology) on lathes used by the Department of Mechanical Engineering students during machining practice. This study aims primarily to see whether there has been a significant deviation / beyond the allowable tolerance limit on the lathe used by students of the Pontianak State Polytechnic Mechanical Department, this research will later be able to take benefits that have to do with improving the skills of students of the Pontianak State Polytechnic Mechanical Engineering Department. Data obtained based on direct experiments on the object under study, the data obtained are processed with several analytical techniques by the variables studied, namely roundness analysis. The results showed that the tolerance of sphericity deviations in lathes MB 2 = 64 μm, can produce workpieces with tolerance values above 64 μm (IT 10). On lathes MB 2 = 84 μm, it can produce workpieces with tolerance values above 84μm (IT 10). Lathe MB 3 = 50 μm, can produce workpieces with tolerance values above 50 μm (IT 9). While the MB 4 lathe tolerance of the deviation of the roundness is 92 μm, it can produce workpieces with tolerance values above 92 μm (IT 11). While the lathe MB 5 tolerance of the deviation of roundness is 80 μm (IT 10), it can produce workpieces with tolerance values above 80 μm. Because these machines are still used for education, especially the implementation of practicum in machining process courses and production activities, improvements should be made to improve their performance.
Rancang Bangun Model Alat Monitoring Pada Refrigerasi Tabung Vorteks Hadimi, Hadimi; Karyadi, Edi; Rusadi, Rusadi
Vokasi: Jurnal Publikasi Ilmiah Vol. 19 No. 2 (2024): Vokasi: Jurnal Publikasi Ilmiah
Publisher : Politeknik Negeri Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31573/jv.v19i2.1025

Abstract

This research was conducted to design and create a model of a vortex tube refrigeration system monitoring tool that will be used as a practicum medium in the Refrigeration and Air Conditioning Engineering course. Currently, the cooling system used as a practical medium is a vapor compression cooling system. The goal to be achieved in this research is a model of a monitoring tool for vortex tube refrigeration techniques. With this monitoring model, it is hoped that it can be used to carry out practical work on vortex tube refrigeration techniques. The stages of this research start from the design stage, assembly stage and functional testing and data acquisition stages. With research flow; preparation of tools and materials, making monitoring models of vortex tube refrigeration engineering tools, testing tool models, collecting and processing data from model experiments. This monitoring tool model for Vortex Tube Refrigeration can directly monitor things such as; Flow rate, temperature, air pressure and COP, all data is recorded and stored on the SD card. The higher the pressure, the cooler the cold air produced, this is because the vortex tube compresses the air. The highest COP value is 0.31 which occurs at the standard 3 bar setting with v1 and v2 (72 and 61 m3/s), P1 and P2 (1.8 and 0.28 bar).
PENGEMBANGAN SISTEM PENGOLAHAN LAHAN GUNA MEMPERSINGKAT WAKTU PERSIAPAN TANAM PADI UNTUK MENINGKATKAN PRODUKTIFITAS PADA KELOMPOK TANI NIBUNG MANDIRI 2 DI DUSUN JERUJU KANAN, DESA TELUK NIBUNG, KEC. BATU AMPAR, KAB. KUBU RAYA Alban Naufal; Hj Nurhaidah; H Widodo PS; Dovian Iswanda; Tri Pratomo; Rina Dwi Yani; Edi Karyadi; Hadimi, Hadimi; Rusadi, Rusadi; Devi Andriani; Faino, Faino
J-ABDI: Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 11: April 2025
Publisher : Bajang Institute

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Abstract

Menurut Badan Pusat Statistik Kabupaten Kubu Raya yang dituangkan dalam Statistik Pertanian Tanaman Pangan Tahun 2015, area ladang sawah memiliki luas total 52.679 Ha di tahun 2015 yang tersebar di sembilan kecamatan. Salah satunya terdapat di Desa Teluk Nibung, Kecamatan Batu Ampar Luas lahan 25 ha dengan kapasitas produksi 40-50 ton/ tahun dalam satu kali produksi. Selama ini kegiatan Kelompok Tani Nibung Mandiri 2 masih terlalu konvensional, sehingga produksi padi yang dihasilkan pun masih tergolong sedikit. Itu dikernakan masih belum terjangkaunya peralatan pendukung untuk pengolahan dan proses pasca panen di Kelompok Tani Nibung Mandiri 2. Dengan adanya alat bantu untuk proses awal penanaman sampai dengan pasca panen tentunya memberikan harapan bagi Kelompok Tani Nibung Mandiri 2 untuk dapat mempersingkat waktu penanaman padi sehingga dapat meningkatkan produktifitas pada Kelompok Tani Nibung Mandiri 2. Penerapan Ipteks pada “Kelompok Tani Nibung Mandiri 2” ini adalah dengan memberikan bantuan berupa alat traktor dan mesin tebas untuk dapat mempersingkat waktu penanaman padi sehingga dapat meningkatkan produktifitas pada Kelompok Tani Nibung Mandiri 2.
Co-Authors Agus Rohermanto, Agus Alban Naufal Devi Andriani Dovian Iswanda Edi Karyadi Faino, Faino H Widodo PS Hj Nurhaidah Rina Dwi Yani Rusadi, Rusadi Rusadi, Rusadi SATRIYAS ILYAS Tri Pratomo Tri Widayanti Winnugroho Wiratman, Manfaluthy Hakim, Tiara Aninditha, Aru W. Sudoyo, Joedo Prihartono