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All Journal International Journal of Electrical and Computer Engineering Jurnal Energi Dan Manufaktur Logic : Jurnal Rancang Bangun dan Teknologi Jurnal Teknologi Terapan Bhakti Persada Jurnal Aplikasi IPTEKS International Journal of Marine Engineering Innovation and Research BHAKTI PERSADA Jurnal Aplikasi IPTEKS (Journal of Applied Sciences and Technology) Logic : Jurnal Rancang Bangun Dan Teknologi Journal of Applied Science and Advanced Engineering
Adi Winarta, Adi
Jurusan Teknik Mesin, Politeknik Negeri Bali
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NUMERICAL STUDY ON THERMAL PERFORMANCE OF MINI-CHANNEL COOLING ON CYLINDRICAL LITHIUM-ION BATTERY COOLING SYSTEM Elvi Ermadani; James Julian; Bima Rakha Adhitama; Fitri Wahyuni; Riki Hendra Purba; Fathin Muhammad Mahdhudhu; Adi Winarta
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 26 No. 1 (2026): March
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v26i1.86-94

Abstract

This study investigates how a liquid-based cooling configuration influences the thermal behavior of a cylindrical lithium-ion (Li-ion) battery pack through numerical analysis. The work underscores the crucial role of proper thermal regulation to maintain operational safety and prolong battery lifespan in high-demand applications such as electric vehicles (EVs). Three cooling-channel diameters—4, 6, and 8 mm—were examined under a 5C discharge condition. The findings indicate that the 8 mm channel offers the most advantageous performance, delivering the lowest maximum temperature, quicker thermal stabilization, and improved temperature uniformity. Conversely, the 4 mm channel resulted in elevated peak temperatures and a temperature gradient (ΔT) of 8.3 °C, which may intensify hotspot formation and accelerate cell degradation. Overall, the results emphasize the importance of selecting an appropriate cooling-channel diameter to effectively mitigate thermal stress.
Optimizing Thermal Management of Lithium-Ion Batteries Using Mini-Channel Cold Plates: Analysis of Cooling Fluids and Flow Rate Variations using CFD Setyawan, Iwan; Yaqien, Angga Ainul; Ridwan, Ridwan; Sutina, I Wayan; Winarta, Adi
Journal of Applied Science and Advanced Engineering Vol. 4 No. 1 (2026): JASAE: March 2026
Publisher : Master Program in Mechanical Engineering, Gunadarma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59097/jasae.v4i1.72

Abstract

Efficient thermal management is critical for improving the safety, performance, and service life of lithium-ion batteries, especially in electric-vehicle applications. This study evaluates a mini-channel cold-plate system by examining the effects of coolant type, mass flow rate, and channel enhancement on heat dissipation using computational fluid dynamics (CFD) supported by experimental validation. Four fluids, namely water, acetone, ethanol, and methane, were examined at mass flow rates of 1×10-5, 1×10-4, and 1×10-3 kg/s. Among the tested fluids, acetone produced the lowest maximum battery temperature of 28.0 °C at 1×10-3 kg/s, while methane showed the weakest thermal performance. Increasing the mass flow rate consistently reduced battery temperature, but it also increased pressure drop and pumping-power demand. The results indicate that coolant selection should be based not only on thermal performance, but also on pumping-power penalty, safety, and environmental considerations. Although acetone delivered the best cooling performance in this study, its flammability limits its immediate practical adoption. The findings provide design guidance for the development of more effective mini-channel cooling systems for lithium-ion batteries.
Penerapan Kompor Kremasi Ramah Lingkungan sebagai Teknologi Tepat Guna untuk Efisiensi Proses Ngaben di Desa Patemon Adi Winarta; I Dewa Made Cipta Santosa; I Gusti Agung Bagus Wirajati; Made Ery Arsana; I Nyoman Agus Adi Saputra; I Wayan Sutina
Bhakti Persada Vol. 12 No. 1 (2026): Mei (2026): Bhakti Persada Jurnal Aplikasi IPTEKS
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/bp.v12i1.20-28

Abstract

Patemon Village in Seririt District, Buleleng Regency, still performs the Ngaben cremation ceremony using open burning with firewood. This traditional practice creates several problems, including high wood consumption, substantial costs, long cremation duration, and thick smoke that potentially pollutes the environment and affects public health. This community service program aims to implement appropriate technology in the form of an eco-friendly cremation stove to improve the efficiency of the cremation process without reducing the sacred value of the ritual. The implementation methods include problem identification, design and fabrication of the stove, socialization and training for residents, application in several Ngaben ceremonies, and technical and social evaluation through combustion parameter measurements and questionnaires. The results show that the stove can shorten cremation time by approximately 40%, reduce firewood consumption by 45–50%, decrease ash residue, and significantly lower smoke intensity. Firewood costs also decline, while the majority of community members and traditional leaders consider the technology easy to operate and consistent with customary procedures. The eco-friendly cremation stove can thus serve as a sustainable solution that integrates technical efficiency, environmental conservation, and the preservation of the Ngaben tradition in Patemon Village.
Co-Authors Anggie Topan Wijaya Bima Rakha Adhitama DaudSimon Annakotapary Dewantara, Annastya Bagas Elvi Armadani Fathin Madhudhu Fathin Muhammad Mahdhudhu Fitri Wahyuni Fitri Wahyuni Fitri Wahyuni I Dewa Made Cipta Santosa I Gusti Agung Bagus Wirajati I Gusti Agung Oka Sudiadnyani I Nyoman Agus Adi Saputra I Wayan Marlon Managi I Wayan Sutina Iwan Setyawan James Julian Luh Putu Ike Midiani Made Ery Arsana Muhammad Amin Nandy Setiadi Djaya Putra Ridwan, Ridwan Riki Hendra Purba Riki Purba Sutina, I Wayan Tulus Hidayat Yusanto Yaqien, Angga Ainul