Akademik Veri Yönetim Sistemi
International World Energy Conference, Kayseri, Türkiye, 12 - 13 Aralık 2025, ss.23, (Özet Bildiri)
This study numerically investigates the influence of fin diameter on the
thermal–hydraulic performance of an air-cooled prismatic LiFePO₄ battery module
intended for stationary energy storage applications. A 4×4 battery pack
configuration was modeled using ANSYS Fluent, where cylindrical fins of four
diameters (3 mm, 4 mm, 5 mm and 6 m) were mounted on the cell surfaces to
enhance convective cooling. A constant air inlet velocity of 1 m/s was applied,
and temperature, airflow resistance, heat transfer behavior and overall
performance efficiency were evaluated comparatively. The simulation results
show that increasing fin diameter improves heat dissipation capability and
delays temperature escalation throughout the discharge period. At 100 s, the
maximum battery temperature decreased from 312.67 K for 3 mm fins to 312.04 K
for 4 mm, 311.89 K for 5 mm and reached the lowest value of 311.71 K with 6 mm
fins, confirming a progressive enhancement in thermal control. However, this
improvement was accompanied by a rise in pressure drop, which measured 69 Pa,
72 Pa, 75 Pa and 78 Pa for the respective diameters, indicating increased flow
resistance due to reduced channel cross-sectional area. The thermal–hydraulic
performance ratio demonstrated that the 3 mm fin exhibited the highest
efficiency (Φ = 0.69), while the 6 mm configuration achieved the strongest
cooling effect but with reduced overall efficiency (Φ = 0.27). Considering both
thermal and hydraulic criteria together, the 5 mm fin configuration offers the
most balanced solution, providing significant cooling capacity with moderate
pressure penalties. These findings highlight fin geometry as a key design
parameter for optimizing energy-efficient thermal management strategies in
LiFePO₄-based battery storage systems.