Analisis Numerik Perbandingan Perpindahan Panas Pada Sistem Pendinginan PEMFC Berbasis Zigzag Multi-Fin dan Hemispherical Fins

Pratama, Faizal Ananda (2026) Analisis Numerik Perbandingan Perpindahan Panas Pada Sistem Pendinginan PEMFC Berbasis Zigzag Multi-Fin dan Hemispherical Fins. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Proton Exchange Membrane Fuel Cell (PEMFC) merupakan teknologi konversi energi yang memerlukan sistem pendinginan untuk menjaga temperatur operasi tetap optimal. Penelitian ini bertujuan membandingkan performa termal geometri Zigzag Multi-Fin dan Hemispherical Fins pada pelat pendingin PEMFC menggunakan metode Computational Fluid Dynamics (CFD). Simulasi dilakukan dengan ANSYS Fluent 2019 R3 pada kondisi steady-state menggunakan geometri Zigzag Multi-Fin serta Hemispherical Fins dengan jari-jari 3 mm, 4 mm, dan 5 mm. Fluida pendingin berupa udara bertemperatur 293 K dengan variasi inlet velocity sebesar 0,6; 1,0; 1,6; 2,2; dan 3,0 m/s. Parameter yang dianalisis meliputi temperature, pressure drop, velocity magnitude, heat transfer coefficient, Qthermal, Qconvection, thermal resistance, dan efisiensi sistem pendingin. Hasil simulasi menunjukkan bahwa peningkatan inlet velocity meningkatkan heat transfer coefficient, Qthermal, dan Qconvection, serta menurunkan thermal resistance, meskipun pressure drop turut meningkat. Dibandingkan dengan Zigzag Multi-Fin, geometri Hemispherical Fins memberikan performa termal yang lebih baik. Hemispherical Fins dengan jari-jari 5 mm menghasilkan heat transfer coefficient tertinggi sebesar 37,63619 W/m²K dan efisiensi sistem pendingin sebesar 34,04%, sedangkan jari-jari 4 mm menghasilkan Qconvection tertinggi sebesar 1,52954 W. Secara keseluruhan, geometri Hemispherical Fins 5 mm memberikan performa pendinginan terbaik.
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The Proton Exchange Membrane Fuel Cell (PEMFC) is an energy conversion technology that requires an effective cooling system to maintain its optimal operating temperature. This study aims to compare the thermal performance of Zigzag Multi-Fin and Hemispherical Fins cooling plate geometries using the Computational Fluid Dynamics (CFD) method. Simulations were performed using ANSYS Fluent 2019 R3 under steady-state conditions. The investigated geometries consisted of a Zigzag Multi-Fin cooling plate and Hemispherical Fins with radii of 3 mm, 4 mm, and 5 mm. Air was used as the cooling fluid with an inlet temperature of 293 K and inlet velocities of 0.6, 1.0, 1.6, 2.2, and 3.0 m/s. The analyzed parameters included temperature, pressure drop, velocity magnitude, heat transfer coefficient, thermal heat transfer rate (Qthermal), convective heat transfer rate (Qconvection), thermal resistance, and cooling system efficiency. The simulation results showed that increasing the inlet velocity enhanced the heat transfer coefficient, Qthermal, and Qconvection, while reducing thermal resistance, although the pressure drop also increased. Compared with the Zigzag Multi-Fin geometry, the Hemispherical Fins geometry exhibited superior thermal performance. The 5 mm Hemispherical Fins achieved the highest heat transfer coefficient of 37.63619 W/m²K and the highest cooling system efficiency of 34.04%, whereas the 4 mm Hemispherical Fins produced the highest Qconvection of 1.52954 W. Overall, the 5 mm Hemispherical Fins configuration provided the best cooling performance.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Fuel Cell, PEMFC, Zigzag Multi-Fin, Hemispherical Fins, Fuel Cell, PEMFC, Zigzag Multi-Fin, Hemispherical Fins
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ265.E23 Thermodynamics.
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Faizal Ananda Pratama
Date Deposited:	10 Aug 2026 02:45
Last Modified:	10 Aug 2026 02:45
URI:	http://repository.its.ac.id/id/eprint/143897

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