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All Journal Simetris FLYWHEEL : Jurnal Teknik Mesin Untirta Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat WIDYAKALA JOURNAL JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY SCIENCE TECH: Jurnal Ilmiah Ilmu Pengetahuan dan Teknologi JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Jurnal Teknik Mesin Indonesia Jurnal Engine: Energi, Manufaktur, dan Material Abdimasku : Jurnal Pengabdian Masyarakat Jurnal Pendidikan Teknik Mesin Undiksha JURPIKAT (Jurnal Pengabdian Kepada Masyarakat) Jurnal Masyarakat Indonesia Cakrawala: Jurnal Pengabdian Masyarakat Global AutoMech : Jurnal Teknik Mesin TEKNOSIA International Journal of Mechanical, Industrial and Control Systems Engineering
Nur Hayati
Universitas Tidar
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Experimental Study on the Effect of Air Flow Rate Variation on the Performance of a Three-Phase Airlift Pump With an Injector Angle of 15° Maulana, Rizki; Fajarningrum, Nurmala Dyah; Hayati, Nur; Saleh, Arif Rahman
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 11, No 2 (2025): October
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v11i2.35498

Abstract

Rivers in Indonesia are heavily polluted, with the main source of pollution coming from industrial waste, including poorly managed mining activities. The airlift pump is used to lift liquid or sediment from a water reservoir that has a lower elevation through a vertical pipe that is partially submerged in the water. This research aims to determine the effect of air flow rate on the performance of the airlift pump during operation under three-phase flow conditions. The performance of the airlift pump is examined through several parameters: superficial velocity, effectiveness, efficiency, and flow patterns. In this study, a tank measuring 50x50x50 cm and a 2.54 m tall acrylic pipe are used as the riser to facilitate the lifting of three-phase flow to the separator component that separates the three phases located at the end of the riser. With a submergence ratio of ¾ h or 1.905 m and using variations of air flow rates of 30, 40, 50, and 60 LPM. The results of this research confirm that increasing air flow rate enhances superficial velocity in all three phases. At air flow rates of 30-50 LPM, the efficiency increases from 4.18 ×10-3 % and peaks at 5.14 ×10-3 %. At 60 LPM, it decreases to 4.88 ×10-3 %. The highest effectiveness reaches 1.281 at an air flow rate of 60 LPM. The optimal flow pattern occurs in slug flow and transitions towards churn flow.
Experimental Analysis of Water Column Height and Air Flow Rate Effects on Two-Phase Airlift Pump Performance Fidaroin, Arsyad Ni'am; Mujiarto, Sigit; Hayati, Nur; Saleh, Arif Rahman
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 11, No 2 (2025): October
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v11i2.35639

Abstract

This study experimentally investigates the effects of water column height and air flow rate on the performance of a two-phase airlift pump with a 15° injector angle. Two water column heights  and  and four air flow rates (30, 40, 50, and 60 LPM) were tested in a laboratory-scale setup. Efficiency was calculated using the Nicklin model, while effectiveness was determined based on the ratio of water to air mass flow rates. Flow patterns were recorded and analyzed using a high-speed camera. The results showed that increasing the water column height significantly improved both efficiency and effectiveness, with the highest values—12.270% and 2354.78, respectively achieved at  and 60 LPM. Flow pattern observations revealed that slug flow dominated at partial submergence, whereas churn flow became prevalent at full submergence with higher air flow rates. The findings demonstrate that optimizing submergence ratio, air flow rate, and injector configuration is essential for achieving high-performance and energy-efficient airlift pump operation.
Analysis of Energy Saving Potential Through Rooftop PV System Implementation at Atria Hotel, Magelang City Hayati, Nur; S, Arbye; Aziizudin, Achmad; -, Diyono; Ceren, Tiko Es Saputra
WIDYAKALA JOURNAL : JOURNAL OF PEMBANGUNAN JAYA UNIVERSITY Vol 12, No 2 (2025): Urban Lifestyle and Urban Development
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat UPJ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36262/widyakala.v12i2.1510

Abstract

The growing energy demand in the hospitality sector highlights the urgent need for efficient and environmentally friendly renewable energy sources. This study investigates the potential for energy savings in hotel buildings through the implementation of rooftop photovoltaic (PV) systems in Magelang City, with a case study at Atria Hotel. The methodology involved analyzing secondary data on solar energy potential, estimating available rooftop area, simulating PV system capacity, and evaluating energy production and economic savings based on the hotel’s laundry energy requirements. The results indicate that Magelang has substantial solar energy potential, with an average Global Horizontal Irradiance (GHI) exceeding 4.8 kWh/m²/day. At Atria Hotel, a rooftop PV system with a capacity of 4.58 kWp can generate approximately 6,656 kWh of electricity annually, meeting around 25% of the laundry facility’s electricity demand. This implementation translates into annual electricity cost savings of IDR 2,635,136.73. These findings demonstrate that rooftop PV systems represent a strategic solution for enhancing energy efficiency and advancing sustainable hotel development in Magelang City.
Studi Eksperimental Pengaruh Variasi Ketinggian Kolom Air Pada Performa Air Lift Pump Tiga Fase Dengan Sudut Injektor 15º Muhammad Hilmi Hanafi; Nur Hayati; Nurmala Dyah Fajarningrum
AutoMech : Jurnal Teknik Mesin Vol. 6 No. 01 (2026): Mei
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh dari variasi ketinggian kolom air terhadap performa air lift pump tiga fase menggunakan sudut injektor sebesar 15º. Sistem pompa ini mengangkut campuran air, udara, dan pasir sungai melalui pipa vertikal dengan memanfaatkan injeksi dari udara yang bertekanan. Parameter performa yang dianalisis meliputi: debit air keluar, pola aliran, massa partikel padat yang terangkat, efisiensi, dan effectiveness.
Peningkatan Perekonomian Warga Kurang Mampu melalui Pengadaan Tempat Usaha Kios Kelontong Adityo Noor Setyo Hadi Darmo; Nur Hayati; Faiz Listyanda
Jurnal Masyarakat Indonesia (Jumas) Vol. 3 No. 02 (2024): Jurnal Masyarakat Indonesia (Jumas)
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/jumas.v3i02.92

Abstract

The existence of home industry plays a very important role in empowering small and medium-sized communities so that they as business actors have independence and self-confidence in entrepreneurship to help the family economy. This Community Service aims to help increase the economic value of small business owners' families by providing kiosks as permanent business premises so that the layout and service are better and compared to previous kiosks/grocery stores which were managed conventionally. The service activities were carried out by the service team together with residents who live in the surrounding areas, starting with conducting site surveys, followed by procurement of row materials in the form of harbel, river sand, cement and lime. Carrying out activities in order to obtain optimal output results, during the activity process stages, assistance is provided with work by the service team starting from preparation for demolition, installation of building foundations, harbel walls, building framework to the finishing process. The impact of good cooperation between partners, the surrounding community and the service team can result in a permanent kiosk building that is suitable, safe and comfortable to be used as a grocery store business to meet the needs of the surrounding residents.
Pelatihan Perawatan dan Penggunaan Mesin Pemotong Ubi untuk Meningkatkan Produktivitas UMKM Keripik Rumahan di Magelang Her Tafga Arfanindita; Nur Hayati; M. Fendy Kussuma Hadi Sufyan; , Raka Mahendra Sulistiyo
JURPIKAT Vol 7 No 2 (2026)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/jurpikat.v7i2.2901

Abstract

Micro, Small, and Medium Enterprises (MSMEs) producing sweet potato chips in Mandiran Village, Salaman District, Magelang Regency face productivity challenges due to the manual slicing process. This method reduces production capacity, causes inconsistent slice thickness, and increases the risk of workplace accidents. Limited technical knowledge also prevents optimal use of existing slicing machines. This program aims to enhance operational capability through training on machine operation and maintenance, based on Standard Operating Procedures (SOP) and occupational safety principles. The method includes needs assessment, development of training modules, machine operation demonstrations, and evaluation of participants’ skills. The results indicate significant improvements in operational competence, work efficiency, and product consistency. The participatory approach also fosters a safer work culture and supports the sustainable adoption of appropriate technology, thereby strengthening the competitiveness of local food-based MSMEs.
The Pelatihan Alat Pemotong Pisang untuk Meningkatkan Produktivitas Pelaku Usaha UMKM Sale Pisang Rumahan Raka Mahendra Sulistiyo; Nur Hayati
JURPIKAT Vol 7 No 2 (2026)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/jurpikat.v7i2.3175

Abstract

Pisang adalah buah yang menjadi komoditas utama dari Kabupaten Magelang. Tercatat tahun 2022 produksi pisang di Magelang mencapai 172.339 kwintal dan terus mengalami peningkatan dimasa mendatang. Pengolahan pisang sebagai makanan siap saji merupakan inovasi dari masyarakat dikarenakan mudah diolah dan juga kandungan gizi yang tinggi dari buah pisang Salah satunya adalah UMKM Sale Pisang di Kota Magelang yang mengolah buah pisang menjadi sale pisang. Permintaan yang terus meningkat menantang produsen untuk meningkatkan produksinya juga. Salah satu solusinya adalah optimalisasi penggunaan alat pemotong pisang. Kegiatan training perawatan dan pengoperasian alat pemotong pisang akan mendorong produktifitas secara efisien. Kegiatan ini diikuti oleh 7 orang karyawan dan karyawati dengan materi pengoperasian, perawatan, kesehatan dan keselamatan kerja, SOP atau prosedur kerja. Pelatihan ini memberikan dampak kebermanfaatan dari materi yang diberikan, kemudahan dalam pemahanam materi, aplikatif, narasumber yang kompeten dengan persiapan yang baik. Peserta juga memberikan evaluasi terkait detailing materi serta keberlanjutan kegiatan untuk alat yang lain.
Pengaruh Submergence Ratio dan Debit Udara Terhadap Performa Airlift Pump Dua Fase Dengan Sudut Injektor 30o: Effect of Submergence Ratio and Air Flow Rate on the Performance of a Two-Phase Airlift Pump with a Injector Angle 30° Muchammad Insan Brilian; Nurmala Dyah Fajarningrum; Nur Hayati
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i2.101916

Abstract

The airlift pump is a device used to lift a mixture of liquid and solid particles through a vertical pipe and is capable of continuous operation. This device serves as a cost-effective solution for water lifting applications and is resistant to solid particles that may otherwise damage conventional pump components. This study aims to evaluate the performance of a two-phase airlift pump based on variations in submergence ratio and injected air flow rate. The main focus is to examine the effects of these parameters on water discharge, the resulting flow patterns, efficiency, and effectiveness of the airlift pump. Experiments were conducted using submergence ratios of h, h, and h, and air flow rates of 30 lpm, 40 lpm, 50 lpm, and 60 lpm. The test results show that increasing the submergence ratio and air flow rate leads to an increase in water discharge and efficiency up to a certain point, after which both values begin to decline. The highest efficiency and effectiveness were recorded at an air flow rate of 40 lpm with a submergence ratio of h, yielding an efficiency of 3.34% and an effectiveness of 888.60. However, once the pump reaches its peak performance, further increases in air flow rate lead to a decrease in overall performance. The observed flow patterns include bubbly, slug, and churn flow. The bubbly flow pattern typically appears at the tail end of slug flow. The results also indicate that higher submergence ratios and air flow rates produce higher water discharge, greater efficiency, and improved effectiveness of the airlift pump.
Effect of Temperature on Slagging During Solid Refuse-Derived Fuel Combustion with Dolomite Additives: Pengaruh Temperatur Terhadap Slagging Pembakaran Bahan Bakar Jumputan Padat Dengan Penambahan Dolomit GALIH PRATAMA; Nur Hayati; Trisma Jaya Saputra
Teknosia Vol. 20 No. 1 (2026): Vol. 20 No. 01 (2026): June 2026
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/teknosia.v20i1.49163

Abstract

This research analyzes the effect of combustion temperature on slagging formation in Solid Refuse-Derived Fuel (SRDF) and evaluates the effectiveness of dolomite additives in mitigating this issue. While SRDF is a promising alternative fuel for co-firing systems, its high ash and alkali metal content often lead to slagging, which can impair combustion performance. The experimental method utilized a muffle furnace with temperature variations of 600°C, 700°C, and 800°C for a duration of 120 minutes. The SRDF samples consisted of an 8:2 ratio of organic to inorganic waste, integrated with 10% dolomite additive based on a 50-gram total sample mass. Observed parameters included slagging mass, slag distribution, and calorific value. The results indicate that temperature significantly influences slagging formation. Furthermore, the addition of dolomite effectively reduces slag formation by increasing the ash fusion temperature through the creation of calcium-based compounds. With the additive, the fuel achieved a calorific value of 4,013.09 cal/g, meeting national (SNI) standards. Ultimately, dolomite proves to be an effective solution for optimizing SRDF utilization as a sustainable energy source in co-firing applications.
Penyerahan Mesin Sawut Grubi pada Kelompok UMKM Grubi Mandiran, Kabupaten Magelang NurNur Hayati; Raka Mahendra Sulistiyo; M. Fendy Kussuma H.S; Adityo Noor Setyo H.D
Cakrawala: Jurnal Pengabdian Masyarakat Global Vol. 5 No. 3 (2026): Agustus: Cakrawala: Jurnal Pengabdian Masyarakat Global
Publisher : Universitas 45 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30640/cakrawala.v5i3.7767

Abstract

Grubi is a Magelang specialty made from sweet potatoes and is a popular product produced by small and medium enterprises (SMEs) in the region. This community service program aims to strengthen the local food chain by providing a sawut machine to one of the SMEs in Mandiran Hamlet. The program began with problem identification to understand the challenges faced by the SME, particularly in the slicing process of sweet potatoes, which is an important stage in grubi production. Based on the identified problems, appropriate solutions were developed and implemented through the provision of a sawut machine. Technical training was also provided to the SME owners on how to operate and maintain the machine properly and safely to ensure more efficient and sustainable use. The program concluded with the handover of the sawut machine to the SME. The activity was enthusiastically received by the SME owners, who recognized the potential benefits of the machine. The sawut machine accelerates the slicing process, reduces processing time, and supports more efficient production. This is expected to increase productivity while maintaining the quality of grubi and supporting the sustainability of the local food business.
Co-Authors , Raka Mahendra Sulistiyo -, Diyono Achmad Aziizudin Adi Purwanto Adi Purwanto Adityo Noor Setyo H.D Adityo Noor Setyo Hadi Darmo Arbye S Ceren, Tiko Es Saputra Erwan Muladi Erwan Muladi Faiz Listyanda Fajarningrum, Nurmala Dyah Fidaroin, Arsyad Ni'am GALIH PRATAMA Hariyanto, Satriawan Dini Her Tafga Arfanindita I Gusti Gde Badrawada M. Fendy Kussuma H.S M. Fendy Kussuma Hadi Sufyan Maulana, Rizki Muchammad Insan Brilian Muhammad Hilmi Hanafi Mujiarto, Sigit Nurmala Dyah Fajarningrum Nurmala Dyah Fajarningrum Raka Mahendra Sulistiyo Saleh, Arif Rahman Saleh, Arif Rahman Susilo, Gunawan Budi Trisma Jaya Saputra Yudha, Venditias