cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Agung Premono
Contact Email
jurnalkem@gmail.com
Phone
+6221-4700918
Journal Mail Official
jkem@unj.ac.id
Editorial Address
Rumpun Teknik Mesin, Fakultas Teknik, Universitas Negeri Jakarta
Location
Kota adm. jakarta timur,
Dki jakarta
INDONESIA
Jurnal Konversi Energi dan Manufaktur
Published by Universitas Negeri Jakarta
ISSN : 23392029     EISSN : 26225565     DOI : https://doi.org/10.21009/JKEM
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
This journal aims as a medium for lecturers, researchers and practitioners to discuss result of their research in the field of mechanical engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 175 Documents
 14   15   16   17   18 
Reconditioning and Enhancement of Automatic Pressure Control Equipment for Servo and Regulatory Processes Suryadi, Aris; Budi Triyono; Hanni Maksum Ardi; Dibyo Setiawan
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 1 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.1.1

Abstract

Control Systems have taken essential parts widely from industrial world to military equipment. Control systems in the industrial world determine the quality, speed, cost and efficiency of the manufacturing process known as the Process Control System (PCS). The core of the Control System is conditioning (actuators) and reading conditions (sensors). By synergizing those parts with the coordination of the controller, the process value (PV) can be obtained according to the condition of the set point (SP). To get the proper control characteristics, i.e. the fastest possible response, the lowest possible oscillation and offset (error steady state/ESS), an understanding of the concept of a closed loop control system with a continuous scheme is developed. In this regard, the Automatic Control Laboratory under the Pneumatic and Hydraulic Laboratory at the Department of Mechanical Engineering - POLBAN considered to provide students with an introduction to Automatic Instrumentation and Control. The briefing covered the introduction, mechanism and operation of Automatic Instrumentation and Control systems. Therefore, tools were required as a medium for achieving the above competencies, one of which was the modernization of pressure regulators in order to strengthen the Laboratory. Through this research, a rejuvenation and modernization of the control system were carried out by applying a proportional, integral and differential (PID) control system. It was based on a programmable logic controller (PLC) equipped with a human machine interface (HMI) to make it easier to enter set points and PID parameters, to be practical in operation and effective in monitoring and data acquisition. The result of the pressure regulator modernization had the ability to include servo control process (getting a certain value) and regulatory control process (maintaining a certain value) with a continuous closed loop scheme. The modernized pressure control system could be utilized as a prototype demonstration of the system in an actual environment to study and observe the Proportional, Integral and Differential (PID) control system along with the process of determining the parameters Kp, Ti and Td as Practicum equipment.
Analysis of Corrosion Rate in Low-Carbon Steel ASTM A36 and AISI 1020 in Sulfuric Acid Solution Using Heat Treatment Temperature and Immersion Time Variations Wiradinata, Trisna Ardi; Daryus, Asy'ari; Sugiyanto, Didik; Nopryandi; Ikhsan, Muhammad
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 1 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.1.5

Abstract

This study investigates the corrosion rate of low-carbon steel ASTM A36 and AISI 1020 in sulfuric acid solution under varying heat treatment temperatures and immersion times. Samples were subjected to heat treatment at 600, 820, and 1100 °C, followed by immersion for 24, 48, and 72 hours. The results reveal significant effects of heat treatment temperature and immersion duration on corrosion performance. At 600 °C with a 72-hour immersion, ASTM A36 exhibited a corrosion rate of 140.68 mm/year, while AISI 1020 showed 149.07 mm/year. At 820 °C, the corrosion rates for ASTM A36 and AISI 1020 were 102.34 mm/year and 96.48 mm/year, respectively. At 1100 °C, ASTM A36 demonstrated a corrosion rate of 87.97 mm/year, compared to 121.08 mm/year for AISI 1020. The findings highlight that increasing heat treatment temperature generally reduces the corrosion rate, though the effect varies by material.
Triangle Velocity Analysis of the Pelton Turbine Design in Microhydro Power Plant Setiawan, Dibyo; Yowando Putro Wicaksono; Herbert Hasudungan Siahaan; Cahyo Wibowo; Fisika Prasetyo Putra
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 1 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.1.4

Abstract

During the period of 29 years, the Central Java Provincial Government has implemented strategic research formulation for flood reduction efforts. One solution for flood management is building a dam. The built dam has the potential to generate electricity. The purpose of the activity is to analyze the turbine speed triangle from the results of the technical design. The method used is the analysis of the turbine speed triangle at an entry angle of 12-14°. The results of the triangle analysis obtained show the F value at 14-12° of 34695.5, 34761.6, and 34847.7 N.m. Torque at 14° were 5313, 5320, and 5330 N.m. Torque at 13° were 5363, 5370, and 5380 N.m. Torque 12° were 5401, 5409, and 5418 N.m. P at 14-12° were 641.5, 642.9, and 644.1 kW. The efficiency of ηo and ηm is 0.90 % and 0.95 %. The conclusion of the application of the turbine speed triangle analysis at an angle of 4-6° is that the optimum turbine efficiency is at an opening angle of 12° with the ability to increase turbine power by 14.79 % and efficiency by 14.66 %.
Comparison of the Efficiency of Solar PV Fixed, Single-Axis, and Dual-Axis Solar Trackers: A Review Efendi, Mas; Mainil, Rahmat Imam; Aziz, Azridjal
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 1 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.1.9

Abstract

The global energy shortage, especially in developing countries, drives the search for alternative energy sources such as solar power, which is one of the cleanest energy sources. This research discusses the comparison of efficiency between solar PV fixed, single-axis solar trackers, and dual-axis solar trackers. The method used is a survey of the literature of multiple studies that only analyzes the efficiency of solar PV using different tracking devices. The efficiency data is normalized based on location factors and light intensity for a fair comparison. The results show that fixed solar panels are stationary and simple, serving as a baseline with 100 % efficiency. Single-axis panels track the sun horizontally, boosting efficiency by 25.6 % but with moderate complexity due to motors and controls. Dual-axis panels track the sun both horizontally and vertically, increasing efficiency by up to 50 % but with the highest complexity due to more moving parts and dual-axis control systems.
Electric Vehicle Review: BEV, PHEV, HEV, or FCEV? Kusuma, Idris; Ruliyanta; Kusumoputro, R. A. S.; Iswadi, Agung
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 1 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.1.8

Abstract

Electric vehicles (EVs) are rapidly advancing as a sustainable transportation solution in the global effort to reduce carbon emissions. There are four main types of EVs: battery electric vehicles (BEVs), plug-in hybrid electric vehicles (PHEVs), hybrid electric vehicles (HEVs), and fuel cell electric vehicles (FCEVs). This article reviews each EV type's advantages, limitations, and prospects based on energy efficiency, carbon emissions, technological development, and infrastructure readiness. The findings indicate that BEVs hold the most significant potential for personal vehicles and urban transportation, while FCEVs are more suited for heavy-duty and long-distance applications. PHEVs and HEVs are considered transition solutions, but their relevance is expected to decrease as technology and global policies evolve. BEVs provide zero emissions. PHEVs provide high flexibility, while HEVs do not require charging infrastructure, and FCEVs offer zero emissions and long-range and fast charging times. FCEV can travel up to more than 800 KM, which is very promising for the distance travelled problem, which is a challenge for electric vehicles.
Passenger Seat Design and Analysis for Railway Executive Transportation Zainuddin; Anggara, Aditya; Setiawan, Dibyo; Setiawan, Apri
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 2 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.2.1

Abstract

The design of executive chairs for trains was carried out to improve safety, comfort and aesthetics of the train. Seat design innovation was made by prioritizing passenger comfort and paying attention to the S curve of the passenger's spine. This research carried out a redesign of the Indonesian railway executive chair with the added advantage of a chair that can be tilted up to 40° from the initial position of 10°. After the design concept is selected, a simulation will be done on three critical parts of the train seat including chair frame, footrest, and footrest frame. According to investigation, there are facilities tailored to user needs, starting from a folding table, middle arm rest, reclining seat 40°, rotate system 180°, and footrest. The mechanism used for reclining seats with the help of a gas spring to adjust the backrest and a rotate system mechanism with plate bearings. Thus, the seat can be adjusted to the direction of the train's advance. The final chair dimensions of 1101x´1091´x632 mm and material ASTM A36, polypropylene, rubber.
The Impact of Varying Water Turbine Blade on Performance of Pico Hydro Power Plants Paloboran, Marthen; Pangruruk, Thesya Atarezcha; Hasim, Wabdillah; Ali, Andi Muhammad Taufik; Muflihat, Syakia; Kaju, Fatra Aderian
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 2 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.2.2

Abstract

This study has a purpose to determine the number of blades effect on a water turbine regarding flow rate and turbine rotation. The turbine utilized in this study is a Pelton-type impulse turbine, which harnesses potential energy and water pressure to enhance its rotational speed. Additionally, it examines how turbine rotation affects voltage, current, and electric power generated. This research is an experimental study focusing on a prototype mini-micro hydro water turbine. The testing involved varying the valve openings at angles of 36°, 54°, 72°, and 90°, as well as the number of blades, which were set to 6, 8, and 10. The output parameters were measured using instruments that met the specifications for the test equipment. The results indicated that the minimum water discharge required to drive the turbine prototype was 30 cm³/s at a valve opening of 36°. The minimum power generated for each variation in the number of blades was as follows: 0.114 W for 6 blades, 1.426 W for 8 blades, and 1.672 W for 10 blades. At the maximum valve opening of 90°, a flow rate of 67 cm³/s was achieved. Under these conditions, the turbine generated powers of 1.5 W for 6 blades, 7.593 W for 8 blades, and 8.16 W for 10 blades. These findings demonstrate that the performance of the micro-hydro power generation system is significantly influenced by water discharge, turbine rotation speed, and the specifications of the power generator used. This study provides valuable insights for developing renewable energy sources to supply electricity in remote areas with limited access to conventional energy. Furthermore, the results can serve as a foundation for designing more efficient and sustainable micro-hydro systems in the future. The results indicate that an increase in the number of turbine blades leads to greater kinetic energy in the water, which in turn raises the rotational speed of the turbine. This increase in kinetic energy enhances the conversion of water energy into mechanical energy, resulting in improved efficiency of the turbine.
Finite Element-Based Structural Evaluation of a Rescue Boat Crane Mount on LCT 153 Vessel Rean, Everin Shafa Ghaitsa; Nugroho, Priyambodo Nur Ardi; Sofia, Emy
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 2 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.2.3

Abstract

Rescue operations onboard marine vessels rely on effective and reliable deployment mechanisms for rescue boats, particularly in emergency scenarios. Cranes are commonly installed to assist in lowering rescue boats, but their performance depends greatly on the strength and reliability of their mounting systems. This study investigates the structural performance of a rescue boat crane mounting system on an LCT 153 vessel using finite element analysis. The problem addressed in this research is the lack of quantitative data on how different crane configurations affect the structural integrity of their mounting base under operational loads. Two crane models with different outreach and load specifications were assessed to identify the most structurally efficient option. Stress distribution and deformation were simulated using 3D models and meshed at various sizes to ensure convergence accuracy. The results revealed that the configuration with a 6-meter outreach generated lower stress (19.69 MPa) and deformation (0.004 mm), while the 7-meter alternative showed higher values. The findings contribute to safer and more efficient crane mounting designs and serve as a reference for shipyards in selecting appropriate equipment based on load performance and structural reliability.
Creation and Evaluation of a Polyurethane/Carbon/Zinc Oxide Film Composite for Use as a Coating Material Kurniawan, Ova; Soegijono, Bambang
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 2 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.2.9

Abstract

The material used as a coating must have unique characteristics. A frequently used coating material is polyurethane. Even though Polyurethane has been widely used as a coating material, it has limitations in thermal resistance. Incorporating fillers such as carbon and ZnO can improve its thermal, dielectric, and corrosion-resistant properties. Composite films of polyurethane with carbon, ZnO, and a mixture of both were prepared. Characterizations included FTIR, TGA, DSC, XRD, dielectric testing, salt spray, water vapor permeability, hydrophobicity, and adhesion tests. FTIR confirmed the presence of functional groups from the fillers. TGA and DSC showed improved thermal stability, particularly in carbon-filled composites. Salt spray and permeability tests indicated enhanced corrosion resistance in ZnO-filled samples, while dielectric properties improved with carbon addition. Hydrophobicity and adhesion tests met coating material criteria. Among all variants, the polyurethane/carbon composite demonstrated the most favorable combination of thermal, dielectric, and surface properties, making it the most suitable for protective coating applications.
Planning for the Development of a 40 kWp Off-Grid Centralized Solar Power Plant (SPP) on Insumbabi Island Yusuf, Erwin; Jakariya; Subeno, Agus
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 2 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.2.4

Abstract

This study aims to design and evaluate a 40 kWp off‑grid centralized Solar Power Plant (SPP) to meet the electricity needs of two underserved villages on Insumbabi Island, Supiori Regency, Papua, Indonesia. A systematic planning and technical design process was conducted, comprising field surveys, satellite‑based solar potential analysis, load assessment, and system configuration. Performance simulations using photovoltaic (PV) Syst software indicate a daily energy output of 158.386 kWh, delivered by 216 PV modules and battery storage with two‑day autonomy. The system achieves an annual average production of 3.3–3.6 kWh/kWp/day. The maximum energy that can be produced by the solar panels reaches 67,661 kWh per year, with the highest monthly output of 6,194 kWh in August and the lowest of 4,992 kWh in February, a performance ratio (PR) of 0.602, and a solar fraction (SF) of 1.0. This confirms its capacity to fully meet local energy demands year‑round. The proposed design demonstrates high feasibility and offers a replicable model for off‑grid rural electrification projects in Indonesia.

Page 17 of 18 | Total Record : 175

 14   15   16   17   18 

Filter by Year

2013 2025


Reset
Filter By Issues
All Issue Vol. 10 No. 2 (2025) Vol. 10 No. 1 (2025) Vol. 9 No. 2 (2024) Vol. 9 No. 1 (2024) Vol. 8 No. 2 (2023) Vol. 8 No. 1 (2023) Vol. 7 No. 2 (2022) Vol. 7 No. 1 (2022) Vol. 6 No. 1 (2019) Vol. 5 No. 2 (2018) Vol. 5 No. 1 (2018) Vol. 4 No. 2 (2017) Vol. 4 No. 1 (2017) Vol. 3 No. 3 (2016) Vol. 3 No. 2 (2016) Vol. 3 No. 1 (2016) Vol. 2 No. 2 (2015) Vol. 2 No. 1 (2015) Vol. 1 No. 3 (2014) Vol. 1 No. 2 (2014) Vol. 1 No. 1 (2013) More Issue