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Greenation International Journal of Engineering Science
Published by Greenation Research
ISSN : 2986089X     EISSN : 29860326     DOI : https://doi.org/10.38035/gijes
Core Subject : Engineering,
Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Mechanical Engineering
Greenation International Journal of Engineering Science (GIJES) is a peer-reviewed journal managed and published by Greenation Research & Yayasan Global Resarch National. GIJES is published four times a year, in March, June, September, and December. GIJES provides a platform for academics, researchers, and practitioners to publish scientific articles. The scope of articles listed in this journal is related to various topics such as Engineering Education, Civil Engineering, Electrical Engineering, Informatics Engineering, Craft Engineering, Architectural Engineering, Industrial Engineering, Mechanical Engineering, Environmental and Safety Technology, Basic Chemical Engineering, and Applied Chemistry, Transportation Engineering, Geology & Mining Engineering, Marine & Naval Engineering, and other related engineering fields.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 48 Documents
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Modeling and Analysis of The Savonius Type L Wind Turbine with Variations in Geometry and Number of Blades on Airflow Using CFD (Computational Fluid Dynamics) Method Komarudin, Komarudin; Khasani, Arif
Greenation International Journal of Engineering Science Vol. 3 No. 4 (2025): (GIJES) Greenation International Journal of Engineering Science (December 2025
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v3i4.693

Abstract

The use of fossil energy has a negative impact on the preservation nature, wind turbines are one form of renewable energy utilization solutions that are environmentally friendly. This study was conducted to determine the performance of the L-type Savonius vertical axis wind turbine modified with variations in geometry and number of blades against airflow. Based on the simulation results using Ansys 2023 student version, it is known that the smaller the angle of attack of the blade, the greater the potential power , while the increase in the number of blades makes the potential power decrease. Turbines with the number of blades 3 with an angular geometry of 30° have the most optimum performance, namely with a maximum airflow velocity at the tip of the turbine blade of 11.2 m/s, the resulting torque of 2345 Nm with an optimum angular velocity of 46.914 rad/s resulting in a potential power of 110.014 Watt.
A Systematic Review of Passion and Personality Traits as Catalysts for Well-Being and a Growth Mindset Patel, Aalap; Patel, Veena
Greenation International Journal of Engineering Science Vol. 3 No. 4 (2025): (GIJES) Greenation International Journal of Engineering Science (December 2025
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v3i4.702

Abstract

This systematic review synthesizes literature on how passion and personality traits function as psychological antecedents for well-being and the development of a growth mindset. Drawing upon 60 peer-reviewed articles from 2013 to 2025, this paper investigates the dynamic interactions between harmonious/obsessive passion, Big Five personality traits, and constructs such as grit, self-efficacy, emotional resilience, and mindset adaptability. Following the PRISMA 2020 guidelines, eligible studies were identified through structured queries across multiple databases including Scopus, Web of Science, Taylor & Francis, and PubMed. A bibliometric content analysis was conducted using keyword co-occurrence and author collaboration mapping. Key findings indicate that passion acts as a motivational engine, while personality traits provide cognitive scaffolding for well-being and mindset development. Harmonious passion is consistently linked with emotional regulation, grit, and flourishing, while conscientiousness and openness predict adaptive behaviors and mindset shifts. The review highlights research gaps related to longitudinal integration, cross-cultural variability, and underexplored moderating factors like digital immersion and resilience scaffolding. Implications for educational settings, organizational behavior, and entrepreneurial leadership are discussed, with recommendations for interdisciplinary and intervention-focused future research.
Design and Development of a Portable Beverage Cooling System Using a Heatsink and Wind Tunnel Fan Based on the Peltier Effect Hadinur, Muhammad Adinda; Komarudin, Komarudin
Greenation International Journal of Engineering Science Vol. 3 No. 4 (2025): (GIJES) Greenation International Journal of Engineering Science (December 2025
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v3i4.714

Abstract

Development system cooler portable become important along increasing need cooling practical without use refrigerant and compressor . System cooler based The Peltier effect offers solution friendly environment and size compact , but performance is greatly influenced by ability disposal hot on the side hot module . Research This aim design and build system cooler drink portable based Peltier module with optimization mechanics using a heatsink and wind tunnel fan. Research methods covering design mechanics , manufacturing prototype , as well as testing performance thermal through measurement temperature side hot , side cold , temperature drinks and consumption Power electricity . The test results show that the system is able to achieve a minimum cold side temperature of 12 °C, a cooling chamber temperature of 16 °C, and reduce the beverage temperature by up to 5 °C within a 30-minute test duration. The use of a heatsink combined with a wind tunnel fan has been shown to increase the effectiveness of heat dissipation, thereby maintaining the stability of the Peltier module's performance. This system has the potential to be developed as an alternative small-scale portable cooler with low power consumption.
Energy Efficiency Analysis of a Hydraulic Power Unit (HPU) System on a Winch during Tensile Load Testing Faiz, Faizin; Komarudin, Komarudin
Greenation International Journal of Engineering Science Vol. 3 No. 4 (2025): (GIJES) Greenation International Journal of Engineering Science (December 2025
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v3i4.722

Abstract

This study aims to analyze the energy efficiency of a Hydraulic Power Unit (HPU) system in driving a winch during tensile load testing. Experiments were conducted on a hydraulic winch with a maximum capacity of 10 tons by applying tensile loads gradually from 2 to 10 tons. The measured parameters include hydraulic pressure, flow rate, pulling force, and rope winding speed. Hydraulic input power and mechanical output power were calculated to evaluate system efficiency. The results indicate that the HPU system is capable of operating the winch stably under all tested load conditions. System efficiency tends to increase from low to medium load levels and then becomes relatively constant or slightly decreases at higher loads due to increasing energy losses caused by mechanical friction, internal leakage, and pressure drops in the hydraulic system. These findings suggest that proper selection of operating parameters and regular maintenance of hydraulic components are essential to improve the overall energy efficiency and reliability of HPU-driven winch systems.
Validation of Plastic Waste Pyrolysis Prototype Design Based on Used Oil Burner with A Simple Condensation System Using Software Laiya, Moh Risman Nabuah; Prumanto, Denny; Komarudin, Komarudin
Greenation International Journal of Engineering Science Vol. 3 No. 4 (2025): (GIJES) Greenation International Journal of Engineering Science (December 2025
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v3i4.729

Abstract

Plastic waste is a serious environmental problem because it is difficult to decompose and its volume continues to increase. One potential solution is pyrolysis technology, a thermal decomposition process at high temperatures in the absence of oxygen that produces oil, gas, and solid residue. This study aims to validate the performance of simulation software in designing a prototype pyrolysis machine using a used oil burner with a simple condensation system through design, simulation, and experimental testing. A three-dimensional model was created using SolidWorks, while temperature distribution analysis was performed using ANSYS. The prototype was designed to process approximately 2 kg of PP and PET plastic at 300–500°C. Parameters analyzed included reactor temperature distribution, condenser temperature drop, and heating and cooling system performance. Both simulation and experimental results demonstrated good performance. The used oil burner produced stable heat, and the condensation system effectively converted steam to oil, demonstrating the prototype's potential for development into an efficient and economical small-scale pyrolysis machine.
Analysis of the Cooling Load of the Air Conditioning System on the 1st Floor of the Dian Nusantara University Building Using the CLTD Method Taqwim, Wa Ode Fanesya; Komarudin, Komarudin
Greenation International Journal of Engineering Science Vol. 3 No. 4 (2025): (GIJES) Greenation International Journal of Engineering Science (December 2025
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v3i4.730

Abstract

In Indonesia's tropical climate, educational buildings such as Dian Nusantara University face thermal comfort challenges due to high temperatures and intense solar radiation, necessitating accurate cooling load analysis for AC system optimization. This study aims to calculate the total cooling load on the first floor using a descriptive quantitative approach with the ASHRAE-based CLTD method, through measurements of building dimensions, occupants, equipment, and the local climate of Cibubur. The results indicate a total load of 53.88 kW (15.3 TR), dominated by wall envelopes (32.0%), glass (21.1%), and occupants (17.1%), while the installed AC capacity of 70 kW is 30% oversized in aggregate but undercapacity in some rooms. The conclusions emphasize the need to adjust AC capacity per room and the combination of split and cassette AC types for energy efficiency; implications include operational cost savings and improved thermal comfort in tropical buildings.
Design of a Miniature Plastic Waste Pyrolysis Machine Prototype Based on a Used Oil Burner with a Simple Condensation System Komarudin, Komarudin; Rachman, Arief; Purmanto, Denny
Greenation International Journal of Engineering Science Vol. 3 No. 4 (2025): (GIJES) Greenation International Journal of Engineering Science (December 2025
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v3i4.731

Abstract

This study aims to design, realize, and evaluate the performance of a mini-scale plastic waste pyrolysis machine prototype based on a used oil burner with a simple condensation system. The research methods include design, fabrication of main components, system assembly, and thermal performance testing for 60 minutes. Test results show that the reactor reached a maximum temperature of 346°C at 40 minutes and maintained a stable temperature of around 325°C. The spiral condensation system was able to convert pyrolysis vapor into liquid oil. The developed prototype has the potential to be an alternative mini-scale waste-to-energy plastic waste treatment technology that is economical and applicable.
Evaluation of the Long-Term Economic Implications of Deploying Renewable Energy Versus Traditional Energy Sources in a Nigerian University Okeagu, Fredrick Nnaemeka; Chisom Precious Nwajiaku; Franklin Chinemerem Ezedinachi; Ugochukwu Divine Muoghalu
Greenation International Journal of Engineering Science Vol. 4 No. 1 (2026): (GIJES) Greenation International Journal of Engineering Science (March - May 20
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v4i1.785

Abstract

This study evaluates the cost-benefit of installing a solar power system in the Department of Industrial and Production Engineering, Nnamdi Azikiwe University, Awka, Nigeria. With frequent power outages and the high cost of fuel-based generators, the department faces increasing energy-related expenses and operational challenges. The research garnered data of the current power sources in the department (Grid electricity and generator), and the possible cost of solar power installation. The cost evaluation was done using the Net Present Value (NPV) and Future Value formulars, for a projected period of 25-years. A comparative analysis of the three options was done, results show that the solar system, with a total cost of ₦29.33 million, is far more sustainable compared to grid electricity (₦102.19 million) and generators (₦240.98 million). The analysis confirms that solar power provides significant long-term financial savings, greater reliability, and environmental benefits. It is therefore recommended as the optimal energy solution for the department, serving both academic and practical sustainability goals

Page 5 of 5 | Total Record : 48

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