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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 56 Documents
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Design and Fabrication of a Smart Waste Bin Using Arduino for Improved Hygiene and Waste Management Francis-Akilaki, Tina Ishioma; Ekemube, Raymond Alex
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.v4i1.737

Abstract

Predominantly in emerging nations, the inevitability for sanitary and efficient waste disposal systems has increased because of rate of waste generation development and urbanization. The aim of this study is to use an Arduino microcontroller and ultrasonic sensor technology to design, fabricate, and assess a low-cost smart waste bin. A HC-SR04 ultrasonic sensor is utilized in the designed and fabricated smart waste bin system to sense user proximity. A servo motor is then automatically stimulated to open and close the bin lid without necessitating physical contact. In order to certify reproducibility in settings with limited resources, hardware, embedded programming, and construction were all completed using simply accessible and reasonably priced components. The operational dependability, response time, and detection accuracy were used for performance evaluation. The experimental outcomes showed constant system performance, less false activation, and reliable lid actuation within the sensing range calibrated. The smart waste bin's design and fabrication greatly advances waste handling proficiency, user convenience, and hygiene. The study establishes that low-cost embedded automation can enhance sanitation infrastructure and offers a scalable foundation for future smart waste management systems.
Analysis of the Impact of Cooling Water Inlet Temperature Changes on Energy Consumption of a Water-Cooled Centrifugal Chiller in Hotel Buildings in Bali Komarudin, Komarudin; Dewi, Marysca Shyntia; Limbong, Robinhot; Prumanto, Deni; Sidik, Moh. Ali; Aji, Ari Pangesti
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.v4i1.804

Abstract

Global climate change and the increasing energy demand in the hospitality industry have led to greater attention toward energy efficiency and resource management. In Bali, known as one of the world's most popular tourist destinations, hotel buildings rely on cooling systems to maintain guest comfort. Water-cooled centrifugal chillers are widely used in large buildings, including hotels. This study aims to analyze the effect of variations in cooling water inlet temperature on the performance of a water-cooled centrifugal chiller in a hotel building in Bali. The research object is a Mitsubishi Heavy Industries chiller with a capacity of 250 TR using R134a refrigerant. The method used is an experimental study, focusing only on the chiller unit without considering air conditioning and cooling tower performance. The results show that increasing the cooling water inlet temperature raises condenser pressure and electrical energy consumption. At a cooling load of 72%, maintaining the inlet temperature at 27.48°C (below the maximum specification limit) can save 194.4 kWh of electrical energy per day. However, if the inlet temperature reaches 32.05°C (above specifications), energy consumption increases by 199.2 kWh per day.
Design of Practical Tools for Achievement of ¾ PK Split AC Cooling System Laboratory Scale Dian Nusantara University Diamond, Anggananda; Komarudin; Prumanto, Denny; Isman, Taufik Nur; Luthfi, Ilham Syawwal
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.v4i1.817

Abstract

This design aims to design and build a laboratory-scale refrigeration test tool that can be used to test the performance of a cooling system under various operational conditions.The design process for this test equipment involves several stages, from requirements analysis and mechanical and electronic design to fabrication and testing. Some of the features implemented in this equipment include precise temperature control, a digital monitoring system, and the ability to test various types of refrigeration systems. The expected outcome of this test equipment is the ability to provide accurate data on refrigeration system performance, which can then be used to improve energy efficiency and cooling system performance in industrial applications.
Analysis of Material Thickness Effect on Die Clearance in Deep Drawing Process of Inner Body Components Komarudin; Siagian, Jacky Mianda; Isman, Taufik Nur; Prumanto, Denny; Pradana, Bintang Ady
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.v4i1.818

Abstract

This study investigates the effect of material thickness on die clearance in the deep drawing process of automotive inner body components. In sheet metal forming, improper parameter selection frequently leads to defects such as wrinkling, burr formation, and fracture, which reduce product quality and production efficiency. Despite extensive studies on stamping processes, the interaction between material thickness and optimal die clearance remains a critical issue in industrial applications. An experimental approach was conducted using a material thickness of 0.8 mm under controlled process conditions. Key parameters, including cutting force, stripping force, drawing force, springback, and material elongation, were measured and analyzed. The results indicate that the optimal die clearance lies within the range of −0.06 mm to +0.11 mm. At this condition, the cutting force reached 39,424 Kgf, while stripping and drawing forces were recorded at 1,971.2 Kgf and 5,708.8 Kgf/mm², respectively. The springback value was measured at 1.8 N/mm², and material elongation reached 3.67 mm. The findings demonstrate that die clearance must be carefully adjusted according to material thickness to ensure stable material flow and minimize defect formation. The novelty of this study lies in the experimental determination of a practical clearance range under actual production conditions. This research provides valuable insights for optimizing die design and improving manufacturing performance.
Analysis of the Effectiveness of Security Information and Event Management (SIEM) Detection Against Advanced Threats Putri, Dilla Ghaisani
Greenation International Journal of Engineering Science Vol. 3 No. 3 (2025): (GIJES) Greenation International Journal of Engineering Science (September - No
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v3i3.849

Abstract

Advanced Persistent Threats (APTs) pose a serious challenge to information systems security. APTs employ complex and persistent techniques to achieve their goal of infiltrating an organization’s network. APTs often operate undetected for prolonged periods, which can last months or even years. The combination of intricate techniques and long-term persistence is what makes APTs so difficult to detect and counter. Security Information and Event Management (SIEM) is a type of security solution used for cyber threat detection and response. This research analyzed the effectiveness of SIEM in detecting APTs based on parameters such as detection speed, accuracy, and false positive rate. Simulations of repeated attacks demonstrate that SIEM expands security visibility and enhances the network’s ability to respond to attacks rapidly. However, large log volumes present a challenge to the entire system, and optimal configuration incurs a high cost for such analysis.
Characteristics of Series and Parallel Centrifugal Pumps Saputro, Andrian; Prumanto, Denny; Ramadhan, Muhammad Sheva
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.v4i1.862

Abstract

A pump is a device used to lift fluids from a lower surface to a higher surface and to move fluids from low pressure to higher pressure. One such device is a centrifugal pump, a dynamic pressure pump widely used to move fluids with high head. The fluids that can be moved are incompressible fluids. In specific applications, pumps can be used to move substances like this centrifugal pump, this is done so that we can use the tool.

Page 6 of 6 | Total Record : 56

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