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All Journal SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Sinergi Jurnal Teknik Mesin Warta Ardhia : Jurnal Perhubungan Udara 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 International Journal of Community Service Journal of Integrated and Advanced Engineering (JIAE) Jurnal Pengabdian Masyarakat : Pemberdayaan, Inovasi dan Perubahan Jurnal Teknik Mesin Mechanical Xplore 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 Library & Information Science 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.
Enhancing Homogeneity and Particle Size Reduction in Coffee–Creamer Mixtures Using Fluidized Bed Mixer Ruhyat, Nanang; Multahada, Erna; Sirait, Alfa Firdaus
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 7, No 1 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v7i1.31132

Abstract

This study investigates the application of a fluidized bed mixer to improve the homogeneity, particle size distribution, and moisture reduction of coffee and creamer powder mixtures. The research focuses on three types of coffee particles—Type A (145 μm), Type B (100 μm), and Type C (50 μm)—which were mixed with creamer in a weight ratio of 1:0.7. The mixing process was conducted using a prototype fluidized bed mixer with a capacity of 1,000 grams and a blower speed range of 2,800–3,000 rpm. After 10 minutes of mixing, significant reductions in particle size were observed: Type A decreased by 20–30%, Type B by 10–15%, and Type C by 5–10%, with creamer particles also experiencing a 15% reduction. Moisture content dropped from 10.63% to 8.5%, demonstrating the system’s dual function of mixing and drying. Microscopic analysis revealed a uniform particle distribution with minimal agglomeration or segregation, confirming the effectiveness of the fluidized bed mixer in achieving a homogeneous blend. These findings underscore the potential of fluidized bed technology in improving the quality, stability, and handling properties of powder-based products. The results have important implications for instant beverage production, food formulation, and broader powder processing industries, where consistent product performance is essential.
Performance Analysis of Centrifugal Pumps Before and After Wear Ring Restoration Rifai, Moh Sahal; Ruhyat, Nanang; Surachman, Arief
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 7, No 1 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v7i1.30324

Abstract

A pump is a mechanical device used to move fluids from a lower elevation to a higher one. In general, pumps are classified into two types: positive displacement pumps and non-positive displacement pumps. Centrifugal pumps fall into the latter category and operate by converting mechanical energy into kinetic energy to transport fluids. A centrifugal pump consists of several key components, including the casing, shaft, bearing, coupling, and impeller. In the case of closed impeller-type centrifugal pumps, wear rings (wearing components) are installed to provide a clearance between the impeller and the casing, preventing physical contact during operation. The size of this clearance significantly affects pump performance. Wear ring damage can result from mechanical wear, corrosion, cavitation, and fatigue, leading to performance losses such as reduced flow rate, lower pressure, and decreased efficiency. This research aims to analyze the effect of wear ring damage on the performance of a centrifugal pump by comparing operational data before and after repair of the wearing components. The performance parameters evaluated include pump head, pressure, hydraulic power, motor power, and overall efficiency. Data were collected through a structured procedure consisting of preparation, testing, measurement, and analysis. Prior to repair, the pump operated with a wear ring clearance of 1.2 mm, resulting in an average efficiency of 8.5% and a flow rate of 0.000646 m³/s. After the clearance was restored to 0.43 mm, the average efficiency increased to 15.5%, with a corresponding flow rate of 0.000932 m³/s. These results demonstrate that maintaining wear ring clearance within recommended standards significantly improves pump performance, highlighting the importance of regular maintenance and timely component repair.
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.
itu Experimental Analysis of the Effects of Intake Manifold Length and Angle Variations on Torque and Power in 110 cc Fuel Injected Motorcycles Alexander, Baimy; Ruhyat, Nanang
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.
Socialization Of Waste To Energy Transformation: Innovation And Future Opportunities In Penang Island Ayu Arwati, I G.; Nurato , Nurato; Feriyanto, Dafit; Hidayat, Imam; Fitri , Muhammad; Pranoto, Hadi; Alva, Sagir; Ginting, Dianta; Ruhyat, Nanang; Noviyanto, Alvian
International Journal Of Community Service Vol. 5 No. 3 (2025): August 2025 (Indonesia - Rusia - Malaysia)
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijcs.v5i3.872

Abstract

Effective waste management is a major challenge in the modern era, especially with the increasing volume of waste produced by society. Transforming waste into energy offers an innovative solution that not only reduces environmental impact but also opens up economic and social opportunities. Through technologies such as biogas, incineration, pyrolysis, and gasification, waste can be converted into sustainable renewable energy sources. This socialization aims to increase public and stakeholder awareness of the importance of innovative waste management and its benefits for the environment and future economy.By understanding the technology, opportunities, and challenges that exist, it is hoped that the community and government can play an active role in supporting the mission towards more environmentally friendly waste management and reducing carbon emissions.
Co-Authors Agung Pramu Aji Agung Pramu Aji, Agung Pramu Ahmad Afif Alexander, Baimy Antonius Angga Andriawan Ayu Arwati, I G. Cholik, Abdul Dafit Feriyanto Desti Dorion, L. B. Dewi Murniati Dwiyoga Nugroho Engkos A. Kosasih, Engkos A. Erna Multahada Faizal Fajar Anggara Fajar Yudi Prabowo Firdianto, Ade Firman Maulana Fitri , Muhammad Ginting, Dianta Hadi Pranoto Hardi Gunawan Haris Ilman Fiqih Haris Ilman Fiqih Hariyanto Triwibowo Hilmy Nurfuad Indradewa, Rhian Jessi Ray Mardhatilla Kamandanu, Ikhsan L. B. Desti Dorion martolis tolis jasani Michael Kirkland Ngala Mohammad Ihsan Muhammad, Firhan Adji Noviyanto, Alvian Nurato , Nurato Putra, Jouvan Chandra Pratama Rifai, Moh Sahal Romahadi, Dedik Sagir Alva Sari, Wedha Sentot Novianto, Sentot Sirait, Alfa Firdaus Surachman, Arief Swardhamana, Putut Jaya Syukur Pribadi Tyas Wedhasari, Tyas Utama, Tri Yoga Wahyudi Rahmat