Engineering in Green Machinery
Jurnal ENIGMA (Engineering in Green Machinery) berfokus pada penelitian dan inovasi di bidang teknik mesin yang mendukung keberlanjutan dan ramah lingkungan. Jurnal ini mencakup berbagai topik yang berkaitan dengan penerapan teknologi hijau dalam desain manufaktur, energi terbarukan, konversi energi, dan material maju. Artikel yang diterima dalam jurnal ini diharapkan dapat memberikan kontribusi signifikan terhadap pengembangan solusi teknologi yang efisien, inovatif, dan berkelanjutan. Berikut adalah fokus dan ruang lingkup dari Jurnal ENIGMA: 1. Desain Manufaktur Fokus pada pengembangan dan inovasi dalam desain dan proses manufaktur yang efisien, ramah lingkungan, serta dapat mengurangi dampak negatif terhadap lingkungan. Topik yang dibahas meliputi: Desain Produk Berkelanjutan: Penggunaan prinsip desain yang mengutamakan efisiensi sumber daya dan minimisasi limbah. Proses Manufaktur Hijau: Teknik produksi yang meminimalkan penggunaan energi dan bahan baku, serta mengurangi emisi dan polusi. Desain untuk Daur Ulang: Pengembangan produk yang dapat dengan mudah didaur ulang atau digunakan kembali setelah habis masa pakainya. Industri 4.0 dalam Manufaktur: Penerapan teknologi canggih seperti otomatisasi, robotika, dan Internet of Things (IoT) dalam meningkatkan efisiensi dan keberlanjutan proses manufaktur. 2. Energi Terbarukan Fokus pada riset dan pengembangan dalam pemanfaatan energi terbarukan untuk mendukung transisi global menuju sistem energi yang lebih berkelanjutan. Beberapa topik yang dibahas antara lain: Sistem Pembangkit Energi Terbarukan: Penelitian tentang teknologi pembangkit energi dari sumber terbarukan seperti tenaga surya, angin, biomassa, geotermal, dan hidro. Integrasi Energi Terbarukan: Studi tentang cara mengintegrasikan berbagai sumber energi terbarukan dalam jaringan energi yang ada, termasuk penyimpanan energi dan sistem distribusi yang efisien. Efisiensi Energi: Pengembangan teknologi dan strategi untuk meningkatkan efisiensi dalam penggunaan energi terbarukan, serta mengurangi ketergantungan pada sumber daya energi fosil. Pengelolaan dan Penyimpanan Energi: Teknologi penyimpanan energi (battery storage, energi terkompresi, dan lain-lain) yang memungkinkan penggunaan energi terbarukan secara lebih stabil dan efisien. 3. Konversi Energi Fokus pada teknologi yang digunakan untuk mengubah energi dari satu bentuk ke bentuk lain yang lebih efisien dan ramah lingkungan. Beberapa area yang dicakup adalah: Konversi Energi Termal: Penelitian terkait konversi energi panas, seperti dalam sistem pembangkit listrik tenaga panas bumi, tenaga surya termal, atau pemanas industri berbasis energi terbarukan. Konversi Energi Mekanik dan Listrik: Teknologi yang mengubah energi mekanik atau kinetik (seperti energi angin atau gelombang laut) menjadi energi listrik yang dapat dimanfaatkan. Pemanfaatan Energi Biomassa: Penelitian mengenai konversi biomassa (seperti limbah pertanian atau biomassa industri) menjadi energi yang dapat digunakan, termasuk teknologi gasifikasi, pirolisis, dan biogas. Sistem Energi Hybrid: Pengembangan sistem energi yang menggabungkan berbagai sumber energi terbarukan dan konvensional untuk meningkatkan keandalan dan efisiensi sistem energi. 4. Material Maju Fokus pada pengembangan material baru dengan sifat yang lebih unggul dibandingkan material konvensional, serta material yang berkontribusi pada teknologi yang lebih efisien dan ramah lingkungan. Area yang termasuk dalam ruang lingkup ini adalah: Material Komposit: Pengembangan material komposit yang lebih ringan, lebih kuat, dan lebih ramah lingkungan untuk berbagai aplikasi industri, termasuk kendaraan ramah lingkungan dan energi terbarukan. Material Berkelanjutan: Penelitian tentang material yang dapat diproduksi dengan proses yang lebih hemat energi dan ramah lingkungan, serta memiliki daya tahan yang lebih lama. Material Nano: Penggunaan nanoteknologi untuk menciptakan material dengan sifat yang lebih unggul, seperti efisiensi termal yang lebih tinggi, ketahanan korosi, atau kemampuan penyimpanan energi yang lebih baik. Material untuk Aplikasi Energi: Material yang digunakan dalam sistem konversi energi, seperti bahan untuk sel surya, baterai, atau superkapasitor, serta material yang mendukung efisiensi dalam penggunaan energi.
Articles
25 Documents
<![CDATA[ANALISIS SISTEM PROTEKSI PRIMARY AIR FAN PADA UNIT 1 DI PLTU PAITON ]]>
<![CDATA[Dzakky kaffa Maharani]]>;
<![CDATA[iham arifin pahlawan]]>
<![CDATA[ ENIGMA: Engineering in Green Machinery Vol. 3 No. 1 (2026): Juli ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Gresik ]]>
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<![CDATA[Electricity is a very important energy to meet human needs in various fields. Steam Power Plants (PLTU) play a crucial role in producing electrical energy, by converting chemical energy from coal into electrical energy. This conversion stage goes through three stages: conversion of chemical energy into heat energy, heat energy into mechanical energy, and finally into electrical energy. This research focuses on PT. PLN NUSANTARA UP PAITON, one of the largest PLTUs in Indonesia, located in Probolinggo with a total capacity of 2 x 400 MW. The research method used is utilizing literature studies as a source of information, data collection techniques through observation and interviews with related parties. The results of the study show that the Primary Air Fan (PA Fan) has an important role in the combustion process in the boiler, including drying coal powder and regulating air flow to the pulverizer. In its working process, the primary air fan has a protection system to protect the PAF when a disturbance occurs, there are nine protections owned by the primary air fan. In addition, a protection system encompassing various instruments, such as thermocouple sensors and vibration sensors, is implemented to ensure the safety and operational efficiency of the PAF. These include thermocouple sensors, RTD sensors, and vibration sensors.]]>
<![CDATA[EVALUASI DAN PERBAIKAN PROSEDUR DEHYDRATOR, CARBON FILTER, DAN COMPRESSOR CO₂ ]]>
<![CDATA[rico dwi kurniawan]]>;
<![CDATA[Rilo chandra muhamadin]]>
<![CDATA[ ENIGMA: Engineering in Green Machinery Vol. 3 No. 1 (2026): Juli ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Gresik ]]>
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<![CDATA[This study aims to evaluate the performance and operational procedures of the Dehydrator, Carbon Filter, and CO₂ Compressor units, which are essential components of an industrial gas purification system. The evaluation was conducted due to persistent problems such as high moisture levels, unstable pressure, and decreased filtration efficiency. The research methods included field observations, operational data analysis, technician interviews, and a review of factory operational standards. The results indicate that most of the problems were caused by suboptimal maintenance schedules, inappropriate startup-shutdown procedures, and decreased filter media quality. Implementation of corrective procedures such as adjusting maintenance intervals, replacing filter media, and revising standard operating procedures (SOPs) has been shown to improve operational stability and product quality. These findings emphasize the importance of continuous monitoring, scheduled maintenance, and standardized operating procedures to minimize unit failures and ensure overall system reliability.]]>
<![CDATA[PERAN HOT AIR GUN DALAM PROSES PERBAIKAN PRODUK BOX ES UNTUK MENUNJANG KUALITAS PRODUKSI DI PT HARMONY PILAR SENTOSA ]]>
<![CDATA[nabil makarim nabil]]>;
<![CDATA[Ilham Pahlawan]]>
<![CDATA[ ENIGMA: Engineering in Green Machinery Vol. 3 No. 1 (2026): Juli ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Gresik ]]>
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<![CDATA[This study aims to describe the role of the Hot Air Gun in the repair process of ice box products as an effort to improve production quality at PT Harmony Pilar Sentosa. The Hot Air Gun is used as the main tool in the plastic welding method for thermoplastic materials, especially for repairing damage such as porosity, leakage, and defects on the plug and flange areas. This research uses a descriptive qualitative method with data collected through field observation, interviews, and documentation of the welding process. The results show that the use of the Hot Air Gun can increase joint strength, improve surface structure, and restore the function of the ice box according to production standards. Field identification indicates an average defect of 900–1000 units per month, with the dominant defects being porosity on the flange and surface scratches. The repair process using the Hot Air Gun is proven to minimize rejected products and improve production efficiency. In addition, visual and mechanical testing shows that the welding results provide strong, neat, and leak-resistant joints. These findings confirm that the use of the Hot Air Gun is an effective technical solution to support improved production quality and repair process efficiency.]]>
<![CDATA[ANALISA CRACK IMPELLER PADA CIRCULATING WATER PUMP (CWP) PLTU PAITON 9 DI PT PLN NUSANTARA POWER UMRO GRESIK ]]>
<![CDATA[Muhammad Indra Setyawan]]>;
<![CDATA[Rilo Chandra Muhamadin]]>
<![CDATA[ ENIGMA: Engineering in Green Machinery Vol. 3 No. 1 (2026): Juli ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Gresik ]]>
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<![CDATA[This internship was conducted with the objective of analyzing the causes of cracking failure on the impeller of the Circulating Water Pump (CWP) at PLTU Paiton 9. The CWP plays a vital role in the power plant cooling system by maintaining turbine thermal efficiency. Impeller failure can significantly reduce condenser performance and cause operational instability. The study was carried out through field observation and laboratory analysis, including X-Ray Fluorescence (XRF) for material composition, hardness testing, penetrant test, and micrographic examination on stainless steel 316 material. The results showed that the impeller had an average hardness value of 91.9 HRB with chemical composition meeting the standard specifications. However, porosity and microcracks were observed, mainly due to residual stress and chloride ion corrosion from seawater exposure. Microstructural analysis revealed chromium carbide (Cr₂₃C₆) precipitation along grain boundaries, indicating sensitization and reduced intergranular corrosion resistance. It was concluded that the main causes of impeller cracking were the combined effects of corrosion, welding-induced thermal stress, and extreme operational conditions. Recommendations include optimizing GTAW welding parameters, performing regular preventive maintenance, and improving operational control to extend impeller service life and enhance system reliability.]]>
<![CDATA[STRATEGI PERAWATAN ROTATING EQUIPMENT SECARA BERKALA PADA POMPA TAGGING 4160 B PT. XYZ ]]>
<![CDATA[Muhammad Rifki Rakhman]]>;
<![CDATA[Ilham Arifin Pahlawan]]>
<![CDATA[ ENIGMA: Engineering in Green Machinery Vol. 3 No. 1 (2026): Juli ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Gresik ]]>
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<![CDATA[PT. XYZ is a company engaged in palm oil processing that produces various derivative products, one of which is biodiesel. The reliability of this equipment determines operational efficiency, so an appropriate and sustainable maintenance strategy is needed. The author analyzed the periodic maintenance strategy on rotating equipment using direct field observation methods, interviews with technicians and equipment managers, and literature studies as a basis for comparison and validation. Based on the analysis results, it was found that several main causes of damage to rotating equipment are excessive vibration due to misalignment and unbalance, bearing damage due to inadequate lubrication, overheating of electric motors due to suboptimal cooling systems, and wear and tear of mechanical components due to service life and high workloads. To reduce the risk of downtime and increase the service life of the equipment, a periodic maintenance strategy was developed that includes condition monitoring as a measure for early detection of damage symptoms, preventive maintenance carried out routinely and scheduled to prevent damage, predictive maintenance based on the actual condition of the equipment through operational data analysis, and corrective maintenance as a corrective action when damage occurs.]]>
