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All Journal JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Majalah Ilmiah MOMENTUM Jurnal Elemen Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Otopro Jurnal ABDIMAS (Pengabdian kepada Masyarakat) UBJ Journal of Earth and Marine Technology (JEMT) Jurnal Rekayasa Energi dan Mekanika Jurnal Inovasi Penelitian dan Pengabdian Masyarakat Jurnal Polimesin
Wahid, Muhammad Abdul
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Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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STUDI EKSPERIMENTAL PEMISAHAN MINYAK-AIR MENGGUNAKAN HIDROSIKLON-BUBBLE GENERATOR Catrawedarma; Sari, Eli Novita; Fiveriati, Anggra; Wahid, Muhammad Abdul; Pamuji, Dian Ridlo; Syaifuddin, Muhammad
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.285

Abstract

This research aims to analyze the performance of oil-water separation using a hydrocyclone-bubble generator. The bubble generator used was an ejector type to make it easier to suck in atmospheric air. The research was carried out by injecting an oil-water mixture through a bubble generator before entering the hydrocyclone system. The air flow injected into the bubble generator was varied from 0.1-1.5 lpm. From experimental studies, it was found that as the air flow increased, the split ratio also increased. The pressure drop at the overflow increases gently while the underflow pressure drop increases significantly along with increasing input air flow. The greater the input air flow, the more significant the difference in underflow and overflow pressure drop. It has implications for a larger pressure drop ratio. The greater the air flow, the greater the overflow efficiency decreases, and the underflow efficiency increases. The highest efficiency in overflow is 87.77%.
PENGARUH PENGGUNAAN PASIR SILIKA DAN PASIR PANTAI TERHADAP KEKUATAN TARIK PADA PENGECORAN LOGAM ALUMINIUM Utomo, Wahyu; Sari, Eli Novita; Fiveriati, Anggra; Wahid, Muhammad Abdul; Pamuji, Dian Ridlo
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

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Abstract

Casting is the process of manufacturing molten metal with a mold to produce a shape close to the original shape. The commonly used molding sand is mountain sand, river sand and silica sand. This research aims to analyze defects and tensile test results of castings with various types of sand (beach sand and silica sand) and types of aluminum (ADC 12 aluminum and aluminum from waste cans). The casting method used is traditional sand blasting. The results show defects in the form of surface hardness, rat tails, shrinkage cavities, and pinholes. The tensile test showed that the highest Ultimate Tensile Strength (UTS) value was obtained from a mixture of Al ADC 12 with beach sand with an average UTS value of 172.44 MPa.
Penerapan Teknologi Oven Ter digitalisasi Untuk Meningkatkan Mutu Produk UMKM Bolen Pisang Nugroho, Agung; Annanto, Gilar Pandu; Wahid, Muhammad Abdul; Nurfa'izin, Syafa'ah
Jurnal Inovasi Penelitian dan Pengabdian Masyarakat Vol. 4 No. 1 (2024): Juni
Publisher : Indonesia Emerging Literacy Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53621/jippmas.v4i1.278

Abstract

Inovasi produk menjadi penting untuk meningkatkan nilai jual produk UMKM dan meningkatkan pendapatan keluarga serta masyarakat sekitar. Namun, beberapa tantangan mungkin dihadapi dalam penerapan teknologi, seperti biaya investasi awal yang tinggi, keterbatasan pengetahuan teknologi, dan keterbatasan infrastruktur. Salah satu contoh UMKM yang menghadapi kendala adalah IKM Bolen Pisang Bu Ayu di Kota Semarang, yang mengalami stagnasi kapasitas produksi dan kesulitan dalam memperluas pasar produknya. Untuk mengatasi tantangan ini, sebuah program pengabdian masyarakat dilakukan dengan kolaborasi antara UMKM dan Universitas Wahid Hasyim. Program ini melibatkan penggunaan mesin oven digital untuk meningkatkan efisiensi dalam proses produksi bolen pisang, serta sosialisasi dan pendampingan dalam persiapan dan pengajuan izin PIRT. Evaluasi program menunjukkan peningkatan signifikan dalam kapasitas produksi, kualitas produk, dan pemahaman mitra tentang proses dan persyaratan perizinan. Pengabdian masyarakat ini berhasil dalam meningkatkan kapasitas produksi, perbaikan kualitas produk, dan membantu mencapai Tujuan Pembangunan Berkelanjutan dalam pilar pembangunan sosial. Upaya kolaboratif antara UMKM dan lembaga pendidikan dapat menjadi model efektif dalam memperkuat sektor UMKM dan mendukung pertumbuhan ekonomi yang berkelanjutan.
Numerical study on the effect of box and polygon geometry in fin and tube heat exchanger on fluid flow and heat transfer Nugroho, Agung; Safi'i, Muhammad; Romadhon, Bukhori Putra; Wahid, Muhammad Abdul; Pujianto, Muhammad Edi
Jurnal Polimesin Vol 22, No 6 (2024): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i6.5624

Abstract

Currently, fin and tube heat exchangers are widely used in various engineering applications, including modern heat exchangers, automotive radiators, and Air Conditioning (AC) systems such as evaporators, and condensers. Enhancing their performance necessitates innovative designs, advanced application, and optimizes geometries to improve heat transfer efficiency. This study investigates the effect of box and polygon geometries on fluid flow and heat transfer in a split Air Conditioner (AC) fin and tube heat exchanger using simulation software. The research examines two tube arrangement-inline and staggered-across different fluid velocities (0.5 m/s, 1 m/s, 1.5 m/s, and 2.5 m/s) and heat flux values (100 W/m2 , 125 W/m2, 125 W/m2, and 150 W/m2 ). The numerical study revealed that the best thermal and hydraulic performance of the fin and tube heat exchanger, based on geometry variations between box and polygon tubes, was achieved with the polygon tube geometry, which resulted in a lower temperature around 23.41°C. This temperature confirmed an increase in heat transfer coefficient by approximately 5% and Nusselt number by about 3%. The best performance overall, considering both thermal and hydraulic aspects, was observed in the inline arrangement, especially for the polygon tube, which resulted in a lower temperature of around 26.38°C. This confirmed an improvement in the heat transfer coefficient by about 4% and the Nusselt number by 2.5%.
Co-Authors Akhmad Zidni Hudaya Anggra, Fiveriati Catrawedarma Eddy Winarno, Eddy Finali, Asmar Firmansyah, Erik Helmy Purwanto Linda Indiyarti Putri Meilasari, Fitriana Muhammad Dzulfikar Muhammad Syaifuddin Nugroho, Irvandianto Nurfa'izin, Syafa'ah Pamuji, Dian Ridlo Pangestu, Wahyu Adi Prasetyo, Sandif Prawibowo, Hartanto Pujianto, Muhammad Edi Qoniah, Lisa Nurul Rianto Wibowo. Rifky Ismail Romadhon, Bukhori Putra Safi'i, Muhamad Sari, Eli Novita Slamet Khoeron Sutono, Sugoro Bhakti Syamsul Arifin Tanaka, Imam Ridwan Wahyu Utomo Yosomulyono, Sutarto