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All Journal SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Sinergi Jurnal Teknik Mesin JMPM (Jurnal Material dan Proses Manufaktur) Warta Ardhia : Jurnal Perhubungan Udara BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains Jurnal Kelautan Nasional Food Science and Technology Journal (Foodscitech) G-Tech : Jurnal Teknologi Terapan International Journal of Advanced Technology in Mechanical, Mechatronics and Material (IJATEC) JTAM ROTARY Journal of Integrated and Advanced Engineering (JIAE) Jurnal Pengabdian Masyarakat : Pemberdayaan, Inovasi dan Perubahan International Journal of Innovation in Mechanical Engineering and Advanced Materials J-ENSITEC (Journal of Engineering and Sustainable Technology) JCSE: Journal of Community Service and Empowerment Jipmas : Journal Inovasi Pengabdian Masyarakat
Nanang Ruhyat
Universitas Mercu Buana
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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PENGARUH PANJANG INTAKE MANIFOLD TERHADAP PERFORMA MESIN SEPEDA MOTOR INJEKSI 108 CC Alexander, Baimy; Ruhyat, Nanang
JTAM ROTARY Vol 6, No 2 (2024): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v6i2.12529

Abstract

Penelitian ini bertujuan untuk menyelidiki pengaruh panjang intake manifold terhadap performa mesin sepeda motor 108 cc. Metode uji coba dilakukan menggunakan dynotest pada intake manifold dengan variasi panjang 7 cm, 5,3 cm dan 4,2 cm. Hasil pengujian menunjukkan bahwa perbedaan panjang intake manifold berpengaruh pada karakteristik kinerja mesin, di mana intake manifold 7 cm memberikan torsi yang lebih besar pada putaran mesin yang lebih rendah, sementara intake manifold 4,2 cm memberikan daya yang lebih besar pada putaran mesin yang lebih tinggi. Selain itu, penelitian ini juga mengamati konsumsi bahan bakar dari 3 variasi panjang intake manifold. Hasilnya menunjukkan bahwa intake manifold 7 cm lebih irit dalam konsumsi bahan bakar dibandingkan dengan intake manifold yang lebih pendek. Panjang intake manifold mempengaruhi secara signifikan kinerja mesin sepeda motor 108 cc, dengan intake manifold panjang lebih cocok untuk aplikasi yang membutuhkan torsi lebih besar pada putaran mesin rendah, sementara intake manifold pendek lebih cocok untuk aplikasi yang membutuhkan daya lebih besar pada putaran mesin tinggi. This research aims to investigate the effect of intake manifold length on the performance of a 108 cc motorcycle engine. The testing method was conducted using dynotest on intake manifolds with variations in lengths of 7 cm, 5.3 cm, and 4.2 cm. The test results show that there is a difference in intake manifold length affects the engine performance characteristics, wherein the 7 cm intake manifold provides greater torque at lower engine speeds, while the 4.2 cm intake manifold provides greater power at higher engine speeds. Additionally, this study also observed the fuel consumption of the 3 intake manifold length variations. The results show that the 7 cm intake manifold is more fuel-efficient compared to the shorter intake manifolds. Intake manifold length significantly influences the performance of a 108 cc motorcycle engine, with longer intake manifolds being more suitable for applications requiring greater torque at lower engine speeds, while shorter intake manifolds are more suitable for applications requiring greater power at higher engine speeds.
ANALISIS PERHITUNGAN BEBAN PENDINGINAN PADA RUANG LOCKER HANGAR 3 PT. GMF AEROASIA DENGAN METODE CLTD Muhammad, Firhan Adji; Ruhyat, Nanang
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 13, No 1 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v13i1.16689

Abstract

Proses pendinginan pada ruang Locker Hangar 3 mempunyai fungsi yang penting dalam menjaga temperatur ruangan agar tetap sejuk. Dengan pendinginan yang optimal, para karyawan yang beristirahat didalam ruangan akan merasa nyaman. Penulis melakukan analisis terhadap kondisi ruang  Locker Hangar 3 dengan metode penelitian yang digunakan adalah dengan cara mengambil data lapangan serta melakukan analisis perhitungan terhadap data tersebut mengunakan rumus rumus yang didapat dari bahan bahan literatur. Setelah dilakukan penelitian dan analisis perhitungan, maka didapat nilai total beban thermal ruangan sebesar 5383.63 Watt, Temperatur tertinggi ruang Locker sebesar 28,20C, nilai kelembaban relative tertinggi pada ruang Locker sebesar 69%. Hasil dari penelitian ini menunjukan bahwa kapasitas mesin pendingin diruang Locker  belum mampu menunjang kebutuhan beban pendingin sehingga harus ditambah 1 buah mesin pendingin dengan kapasitas 1.5PK. mesin pendingin yang ada sebelumnya direkoemendasikan untuk diganti dari ke tipe Low-Watt dengan peluang efisiensi  efisiensi 19,28% dengan tingkat penghematan Rp2.033.024 per Tahun. dari segi penerangan, Lampu Ruang Locker direkomendasikan untuk dilakukan penggantian menggunakan lampu Tube LED dengan kapasitas 24 Watt. peluang penghematan yang dihasilkan 33.33 % lebih ekonomis dari lampu yang telah terpasang, dengan efisiensi yang dihasilkan adalah sebesar Rp.2.226.097 per tahun. Hasil perhitungan Indeks Konsumsi Energi di ruang Locker  adalah sebesar 17,05 kWh/m2 termasuk dalam katagori efisen.
Pola aliran udara dan distribusi temperature diinduksi oleh system air conditioning Putra, Jouvan Chandra Pratama; Firdianto, Ade; Ruhyat, Nanang
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 9, No 2 (2020)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v9i2.8204

Abstract

Perancangan aliran udara di dalam sebuah ruangan tertutup dibutuhkan untuk memasok kebutuhan udara segar yang diperuntukan bagi penghuni ruangan tersebut. Selain itu, pola aliran udara merupakan media pembawa partikel atau pembawa panas yang dapat mendistribusikan kedua aspek tersebut di dalam ruangan. Maka aliran udara menjadi suatu isu kritikal yang dapat mempengaruhi kenyamanan para penghuni ruangan bahkan gedung. Studi ini menyajikan pemodelan dan simulasi aliran udara dan efeknya terhadap distribusi temperatur di dalam ruangan kantor. Hal tersebut dapat dicapai dengan melakukan studi parametrik dimana dalam studi ini dilakukan modifikasi letak pasokan udara dan nilai kecepatan udara dengan mengacu pada model yang telah divalidasi. Pendekatan simulasi numerik untuk memecahkan model laminar flow dan heat transfer dalam penelitian ini dilakukan secara bertahap, dimana pada tahap pertama model laminar flow dipecahkan dengan tujuan untuk mendapatkan informasi mengenai distribusi aliran udara. Setelah itu, pemecahan terhadap pemodelan heat transfer dilakukan untuk mendapatkan perilaku distribusi temperatur di dalam ruangan. Hasil simulasi mengindikasikan bahwa posisi outlet di dalam ruangan sangat penting untuk membantu distribusi udara agar tercapai pasokan udara yang merata. Selain itu, kecepatan udara dengan nilai yang berbeda mempunyai pola distribusi yang sama baik pada udara maupun temperatur di dalam ruangan. Karakteristik tersebut menunjukan bahwa nilai kecepatan udara di dalam ruangan berpengaruh terhadap waktu penyebaran temperature di dalam ruangan tertutup. Akhirnya, penelitian ini menunjukkan bahwa strategi dalam menambah kecepatan udara dalam mendistribusikan temperatur untuk menciptakan kenyamanan kerja adalah bukan faktor signifkan yang bersifat tunggal. Tetapi,ada parameter lain yang cukup berpengaruh seperti posisi outlet yang merupakan jalur distribusi udara yang juga merupakan jalur distribusi temperatur.
Analysis of Boiler Efficiency and NPHR With the Use of Sootblower in a 315 MW Coal-fired Power Plant Utama, Tri Yoga; Ruhyat, Nanang
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 18 No. 2 (2024): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.18.2.80-89

Abstract

In the power generation sector, particularly in Indonesia, coal-fired power plants remain a key source of electricity. The Lontar Extension Coal-Fired Steam Power Plant (PLTU) (1x315 MW) is a significant facility that plays a critical role in ensuring a stable electricity supply to the Jakarta area and its surroundings. One of the major operational challenges faced by the plant is managing the ash produced during coal combustion, which leads to slagging and fouling on boiler tube surfaces. These phenomena impair heat transfer efficiency and increase fuel consumption. Given the growing emphasis on operational efficiency and sustainability in the power generation industry, addressing these challenges is of paramount importance. In this research, we conduct a comprehensive analysis of key performance parameters, such as Net Plant Heat Rate (NPHR) and boiler efficiency, at the Lontar Extension PLTU. A particular focus is placed on the use of soot blowers in the Heat Recovery Area (HRA) to mitigate slagging and fouling issues. This study offers unique insights by quantifying the benefits of soot blower operation, which resulted in a 0.71% increase in boiler efficiency and a 33.91 kcal/kWh decrease in NPHR at 100% load, and a 0.63% increase in boiler efficiency and 47.16 kcal/kWh reduction in NPHR at 50% load. Additionally, the soot blowers contributed to increased net power output and reduced coal consumption, highlighting the innovation in boiler cleaning techniques and their significant impact on fuel efficiency.
Pentingnya Sosialisasi Keselamatan dan Kesehatan Kerja (K3) Di Lingkungan Padat Penduduk Sari, Wedha; Nanang Ruhyat
JCSE: Journal of Community Service and Empowerment Vol. 5 No. 1 (2024): JCSE April 2024
Publisher : LP3M Universitas Putra Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32639/jcse.v5i1.829

Abstract

Socialization of Occupational Safety and Health (K3) in densely populated settlements has high urgency considering that densely populated settlements often face high risks related to safety and health. By actively involving the community, this outreach program aims to establish a strong safety culture and create a safer and healthier environment. The urgency lies in the need to overcome problems such as fires, evacuation access and unavailability of extinguishers which pose risks in densely populated settlements. With proper K3 outreach, community preparedness can be increased for fires, natural disasters and so on. The program's objectives include increasing community knowledge about OSH practices, changing positive attitudes towards safety, and adopting safer behavior. Apart from that, establishing a local K3 volunteer team is also a strategic goal to ensure continuity and dissemination of information at the community level. The targeted output involves active community participation in training and outreach. It is hoped that the formation of an K3 volunteer team, a significant increase in community knowledge after socialization, as well as positive changes in attitudes and behavior regarding K3.
LITERATURE REVIEW: PENGARUH SUHU AIR ECONOMIZER DAN FLOW STEAM TERHADAP EFISIENSI BOILER CFB faizal; Nanang Ruhyat
J-ENSITEC Vol. 11 No. 02 (2025): June 2025
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/j-ensitec.v11i02.13607

Abstract

This study aims to analyze the effect of economizer water temperature and steam flow on boiler operational efficiency in Circulating Fluidized Bed (CFB) type Steam Power Plant (PLTU). The study was conducted through a literature review of a number of recent studies that examined the relationship between these two parameters and the thermal efficiency of the boiler system. The analysis shows that increasing the economizer water temperature from 65°C to 67°C can increase the efficiency up to 4%, while installing economizer in general can increase the efficiency up to 10%. On the other hand, excessive steam flow variation can cause temperature fluctuations and decrease efficiency, while optimal steam flow regulation is proven to increase heat recovery from flue gas and decrease operating costs. The optimal interaction between economizer water temperature and steam flow is proven to save fuel, reduce greenhouse gas emissions, and extend the service life of boiler components. This study concludes that the implementation of automatic control and real-time monitoring of both parameters is essential to improve energy efficiency, reduce maintenance costs, and support the sustainability of power generation systems.
Pelet dari Sampah organik: Misi Hijau di Kolam Lele Wedhasari, Tyas; Ruhyat, Nanang
Jurnal Pengabdian Masyarakat: Pemberdayaan, Inovasi dan Perubahan Vol 5, No 1 (2025): JPM: Pemberdayaan, Inovasi dan Perubahan
Publisher : Penerbit Widina, Widina Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59818/jpm.v5i1.1050

Abstract

The management of household organic waste can be an innovative solution to reduce waste while creating valuable products, such as fish feed for catfish. Organic waste, which has long been one of the main contributors to household waste, can be optimally utilized to provide ecological and economic benefits. This community service initiative aims to process organic waste, such as vegetable scraps, fruit peels, and food residues, into eco-friendly catfish feed. The processing begins with the collection of fresh waste, sorting, and cleaning to ensure the quality of materials free from contamination. The waste is then fermented using probiotics, such as Lactobacillus, chosen for their ability to enhance nutritional value, accelerate decomposition, and reduce unpleasant odors. Once fermentation is complete, the materials are dried, ground into powder, and formulated with additional ingredients such as rice bran, fish meal, or eggs to meet the nutritional needs of catfish. The dry pellet is proven to be not only cheaper than commercial feed but also effective in supporting optimal fish growth. Additionally, this approach provides ecological benefits by reducing the volume of organic waste ending up in landfills, thus helping to mitigate methane emissions and other negative environmental impacts. This method offers a practical, sustainable, and circular-economy-based solution for household organic waste management while supporting more eco-friendly catfish farming.ABSTRAKPengelolaan sampah organik rumah tangga dapat menjadi solusi inovatif untuk mengurangi limbah sekaligus menciptakan produk bernilai guna, seperti pakan ikan lele. Sampah organik, yang selama ini menjadi salah satu penyumbang utama limbah rumah tangga, dapat dimanfaatkan secara optimal untuk memberikan manfaat ekologis dan ekonomi. Pengabdian ini bertujuan untuk mengolah limbah organik, seperti sisa sayuran, kulit buah, dan ampas makanan, menjadi pakan lele yang ramah lingkungan. Proses pengolahan diawali dengan pengumpulan limbah segar, pemilahan, dan pembersihan untuk memastikan kualitas bahan yang bebas dari kontaminasi. Limbah kemudian difermentasi menggunakan probiotik, seperti Lactobacillus, yang dipilih karena kemampuannya meningkatkan nilai gizi, mempercepat proses dekomposisi, dan mengurangi bau tidak sedap. Setelah proses fermentasi selesai, bahan dikeringkan, digiling menjadi tepung, dan diformulasikan dengan bahan tambahan seperti dedak, tepung ikan, atau telur untuk memenuhi kebutuhan nutrisi ikan lele. Produk akhir berupa pelet kering ini terbukti tidak hanya lebih murah dibandingkan dengan pakan komersial juga mendukung pertumbuhan ikan secara optimal. Selain itu, pendekatan ini memberikan manfaat ekologis dengan mengurangi volume limbah organik yang berakhir di tempat pembuangan akhir (TPA). Pendekatan ini menawarkan solusi praktis, berkelanjutan, dan berbasis ekonomi sirkular dalam pengelolaan sampah rumah tangga, sekaligus mendukung budidaya ikan lele yang lebih ramah lingkungan.
Pelatihan Komprehensif Desain Mesin Berbasis Teori Wedhasari, Tyas; Ruhyat, Nanang; Multahada, Erna
Jurnal Pengabdian Masyarakat: Pemberdayaan, Inovasi dan Perubahan Vol 5, No 5 (2025): JPM: Pemberdayaan, Inovasi dan Perubahan
Publisher : Penerbit Widina, Widina Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59818/jpm.v5i5.1957

Abstract

ABSTRACTThis community service activity aimed to enhance the capacity of micro, small, and medium enterprise partners in the manufacturing sector through theoretical-based machine design training. This training is distinctive because, in addition to mechanics and design theory, the material also covers production management and digital marketing concepts, providing participants with a comprehensive perspective on operational processes and business strategies. The implementation method involved a series of training modules covering fundamental machine design principles using mechanics and materials, Computer-Aided Design software utilization, production management, and digital marketing. The training was conducted in Malaysia with active participation from partner participants, students, and lecturers. The activity results demonstrated a significant improvement in participants' theoretical understanding and practical skills in machine design, modern technology application, as well as production management and marketing. Initial evaluation through surveys and feedback indicated that the capacity building targets were successfully achieved. In conclusion, this activity provided a tangible contribution to improving the human resources quality of the partners, potentially enhancing their business competitiveness in the market.ABSTRAKKegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan kapasitas mitra, yaitu pelaku usaha kecil dan menengah di sektor manufaktur, melalui pelatihan pembuatan desain mesin dengan pendekatan teoretis. Pelatihan ini berbeda karena tidak hanya teori mekanika dan desain, materi juga mencakup konsep manajemen produksi dan pemasaran digital, memberikan peserta perspektif menyeluruh tentang proses operasional dan strategi bisnis. Metode pelaksanaan meliputi serangkaian tahapan pelatihan desain mesin menggunakan prinsip dasar mekanika dan material, pemanfaatan perangkat lunak Computer-Aided Design, manajemen produksi, serta pemasaran digital. Pelatihan dilaksanakan di Malaysia dengan melibatkan peserta mitra, mahasiswa, dan dosen. Hasil kegiatan menunjukkan peningkatan pemahaman teoretis dan keterampilan praktis peserta dalam desain mesin, penggunaan teknologi modern, serta manajemen produksi dan pemasaran. Evaluasi awal melalui survei dan umpan balik menunjukkan tercapainya target peningkatan kapasitas. Simpulan kegiatan ini memberikan kontribusi nyata terhadap peningkatan kualitas sumber daya manusia mitra, yang berpotensi meningkatkan daya saing usaha mereka di pasar.
Sosialisasi K3 : Pentingnya Pemahaman Titik Temu yang Aman Saat Bencana Sari, Wedha; Ruhyat, Nanang
Jurnal Inovasi Pengabdian Masyarakat Vol 1 No 2 (2024): JIPMAS : Journal Inovasi Pengabdian Masyarakat
Publisher : PT. Karya Inovatif Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65255/jipmas.v1i2.46

Abstract

Community service aims to increase understanding of safety and health (K3) related to fire, especially in establishing a safe meeting point when a disaster occurs. Through well-conducted outreach, participants are given knowledge about preventive measures, emergency measures, and the importance of having an organized evacuation plan in the face of fire. Interactive and participatory counseling methods are used to invite participants to be actively involved in learning, including emergency evacuation simulations. Before the socialization, participants filled out a questionnaire to measure their understanding and attitudes regarding fire K3. The results of the questionnaire are the basis for an initial evaluation to determine the level of knowledge and awareness of participants before socialization is carried out. After socialization, participants were also asked to fill out the same questionnaire to evaluate changes in their understanding, attitude and readiness towards fire. The evaluation results showed a significant increase in participants' understanding of preventive measures and emergency actions when a fire occurs. In addition, participants also showed an increase in their mental and physical readiness in dealing with emergency situations. This evaluation provides an indication that K3 socialization has had a positive impact on participants in increasing their awareness and preparedness for fires. As a further step, it is necessary to carry out regular monitoring and evaluation to ensure the continuity of the understanding and attitudes that have been improved by participants. Collaboration with related parties such as the fire department and related agencies can also strengthen efforts to improve community safety against fire disasters in residential areas.
itu Experimental Analysis of the Effects of Intake Manifold Length and Angle Variations on Torque and Power in 110 cc Fuel Injected Motorcycles Baimy Alexander; Nanang Ruhyat
G-Tech: Jurnal Teknologi Terapan Vol 9 No 3 (2025): G-Tech, Vol. 9 No. 3 July 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i3.7320

Abstract

The performance of small displacement motorcycle engines is significantly influenced by the design of the intake manifold, particularly its geometric characteristics such as length and bend angle. This study examines the effects of intake manifold geometry variations on the performance of a 110 cc fuel injected motorcycle engine. Nine configurations were tested, combining three intake lengths (3 cm, 9 cm, and 12 cm) and three bend angles (0°, 20°, and 40°). A dynamometer was used to measure engine output in terms of torque and power. Results indicate that manifold geometry strongly affects engine performance. The best torque value, 23.40 Nm, was achieved with the 12 cm and 20° configuration, while the highest power output of 9.0 HP came from the 12 cm and 40° configuration. ANOVA confirmed statistically significant effects of both variables (p < 0.05). Unlike previous studies that typically isolate one geometric factor, this research fills a gap by evaluating length and angle together. These findings provide practical insights for optimizing intake manifold design in small fuel injected engines, improving both power and efficiency.
Co-Authors Abdul Cholik Agung Pramu Aji Agung Pramu Aji, Agung Pramu Ahmad Afif Ahmad Romadhoni Alexander, Baimy Alfa Firdaus Sirait Amirul Mu&#039;minin Antonius Angga Andriawan Arief Surachman Baimy Alexander Cholik, Abdul Dedik Romahadi Desti Dorion, L. B. Dewi Murniati Dwiyoga Nugroho Engkos A. Kosasih, Engkos A. Erna Multahada Erna Multahada Faizal Fajar Anggara Fajar Yudi Prabowo Firdianto, Ade Firman Maulana Hardi Gunawan Hardi Gunawan Haris Ilman Fiqih Haris Ilman Fiqih Hariyanto Triwibowo Hilmy Nurfuad Jessi Ray Mardhatilla L. B. Desti Dorion martolis tolis jasani Michael Kirkland Ngala Moh Sahal Rifai Mohammad Ihsan Muhammad, Firhan Adji Parely, Rizky Nanda Putra, Jouvan Chandra Pratama Putut Jaya Swardhamana Rifai, Moh Sahal Sari, Wedha Sentot Novianto Sentot Novianto, Sentot Sirait, Alfa Firdaus Surachman, Arief Swardhamana, Putut Jaya Syukur Pribadi Tyas Wedhasari Utama, Tri Yoga Wahyudi Rahmat