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Contact Name
A. Jannifar
Contact Email
polimesin@pnl.ac.id
Phone
+628126930456
Journal Mail Official
polimesin@pnl.ac.id
Editorial Address
Politeknik Negeri Lhokseumawe Jl. Banda Aceh-Medan Km 280 Buketrata, Lhokseumawe, 24301, Aceh, Indonesia
Location
Kota lhokseumawe,
Aceh
INDONESIA
Jurnal Polimesin
ISSN : 16935462     EISSN : 25491199     DOI : http://dx.doi.org/10.30811/jpl
Polimesin mostly publishes studies in the core areas of mechanical engineering, such as energy conversion, machine and mechanism design, and manufacturing technology. As science and technology develop rapidly in combination with other disciplines such as electrical, Polimesin also adapts to new facts by accepting manuscripts in mechatronics. In Biomechanics, Mechanical study in musculoskeletal and bio-tissue has been widely recognized to help better life quality for disabled people and physical rehabilitation work. Such a wide range of Polimesin could be published, but it still has criteria to apply mechanical systems and principles. Exceeding the limitation has been a common reason for rejection by those outside the scope. Using chemical principles more than mechanical ones in material engineering has been a common reason for rejection after submission. Excessive exploration of the management within the discipline of Industrial Engineering in the manufacturing technology scope is also unacceptable. The sub-scope biomechanics that focuses on ergonomics and does not study movement involving applied force on the bio-tissue is also not suitable for submission.
Articles 582 Documents
Effect of plasma–ozone injection on the performance of a B30 diesel engine under variable load Saputra, Alfian Ady; Ramadhan, Muhammad Hardiman Nur; Insani, Melati Nurul
Jurnal Polimesin Vol 24, No 2 (2026): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i2.8740

Abstract

To improve thermal performance and energy conversion efficiency in biodiesel-fueled diesel engines, an active combustion control strategy through modification of the inlet air reactants is crucial. This study investigates the effect of injecting ozone (O₃) produced through a Dielectric Barrier Discharge (DBD) plasma reactor into the air intake of a single-cylinder diesel engine with a variable compression ratio (TV1). Key parameters evaluated included brake power, specific fuel consumption (SFC), air–fuel ratio (AFR), volumetric efficiency, and in-cylinder pressure under varying dynamic loads (1 kg to 9 kg). The experiments were conducted at three compression ratios (14, 16, and 18) with varying ozone doses of 0, 3, 12, 15, and 18 mg. The results showed that the addition of ozone was able to control the combustion duration and phase. The study observed a significant decrease in SFC of up to 25.57% at a compression ratio of 14, an increase in AFR of up to 34.29% at a compression ratio of 16, and an increase in volumetric efficiency of up to 18% at a compression ratio of 18. Cylinder pressure analysis showed an increase in peak pressure and a decrease in net heat release values, indicating a more stable and smoother combustion. These findings confirm that ozone injection acts as an effective chemical cetane improver, especially under operating conditions where the thermal energy of compression is low (compression ratio of 14).
Comparative of field study of three- and four-bladed archimedes spiral wind turbines under natural low wind conditions Faroja, Anas; Arifin, Fatahul; RS, Carlos
Jurnal Polimesin Vol 24, No 2 (2026): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i2.8908

Abstract

Archimedes Spiral Wind Turbines (ASWTs) are suitable for small-scale energy harvesting in low wind environments.However, field-based evaluation on the effect of blade number under natural wind conditions remains limited. This study experimentally examines the influence of blade number on rotational behavior and electrical performance under natural wind conditions, providing empirical insights beyond controlled laboratory and numerical studies. Three-bladed and four-bladed turbine configurations were fabricated and tested in field conditions with wind speeds ranging from 0.8 to 4.0 m/s. Wind speed, rotational speed, voltage, current, and electrical power were measured and analyzed.  The results show that the four-bladed turbine achieved earlier cut-in behavior and consistently higher electrical output across the tested range, reaching a peak power of approximately 0.29 W at wind speeds of 4.0 m/s, compared with about 0.09 W for the three-bladed configuration. The improved performance was attributed to enhanced torque continuity and rotational stability rather than increased rotational speed alone. Transient current peaks and zero-current events observed near 1.5 to 2.0 m/s were attributed near-cut in electromechanical behavior under short-term wind fluctuations. These results confirm that blade number significantly affects ASWT performance in low wind environments and provide practical guidance for optimizing small-scale wind turbine design.