Analisa Compact Heat Exchanger Tipe Fin and Tube Untuk Thermal Management pada Mobil Isuzu Panther Konversi Hybrid dengan Metode Effectiveness-NTU

Romadhan, Dendi Satria (2025) Analisa Compact Heat Exchanger Tipe Fin and Tube Untuk Thermal Management pada Mobil Isuzu Panther Konversi Hybrid dengan Metode Effectiveness-NTU. Project Report. [s.n.], [s.l]. (Unpublished)

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Abstract

Operasional sistem penggerak elektrik pada mobil Isuzu Panther konversi hybrid saat ini dihadapkan pada tantangan manajemen termal untuk menjaga suhu komponen utama agar tidak melebihi batas kritis 75 ℃. Motor listrik dan inverter yang digunakan secara terus-menerus pada kecepatan operasional 30 km/jam menghasilkan total beban panas (heat load) yang cukup tinggi, yakni sebesar 2.4 kW. Penanganan beban panas ini bergantung pada sistem pendingin cair dengan radiator eksisting tipe fin and tube, namun kinerjanya dalam mendisipasikan panas belum teruji secara langsung sehingga berpotensi memicu kerusakan komponen akibat overheating. Untuk mengantisipasi kendala tersebut, penelitian ini mengevaluasi kinerja termal radiator eksisting untuk memprediksi kapabilitas aktual pelepasan kalornya. Pendekatan analitik menggunakan metode Effectiveness-NTU dipilih untuk mengetahui tingkat efisiensi pertukaran panas berdasarkan spesifikasi dimensi radiator dan parameter aliran fluida antara cairan pendingin dan udara. Berdasarkan hasil analisis dan evaluasi kinerja, diperoleh bahwa radiator aktual hanya mampu menyediakan tingkat efektivitas perpindahan panas sebesar 6.41% dengan nilai Number of Transfer Units (NTU) sebesar 0.066227. Evaluasi kinerja termal menunjukkan bahwa unit eksisting ini hanya mencapai kapasitas pelepasan kalor aktual sebesar 1.2125 kW, yang secara signifikan berada di bawah kebutuhan disipasi total sebesar 2,4 kW. Karakteristik sistem juga terkonfirmasi tidak memadai, ditandai dengan penurunan temperatur cairan pendingin yang sangat minim, yakni dari 75 ℃ menjadi hanya 72.4 ℃. Oleh karena itu, diusulkan penggantian unit radiator dengan kapasitas termal yang lebih tinggi serta penambahan sistem pendingin aktif (electric fan) guna mengatasi defisit kapasitas pendinginan pada pengoperasian secara kontinu.
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The operation of the electric powertrain in the Isuzu Panther hybrid conversion vehicle currently faces thermal management challenges to keep the temperature of key components from exceeding the critical limit of 75 ℃. The electric motor and inverter, which operate continuously at a speed of 30 km/h, generate a relatively high total heat load of 2.4 kW. Management of this heat load relies on a liquid cooling system using the existing fin-and-tube radiator; however, its performance in dissipating heat has not been directly tested, posing a potential risk of component damage due to overheating. To address these challenges, this study evaluates the thermal performance of existing radiators to predict their actual heat dissipation capabilities. An analytical approach using the Effectiveness-NTU method was selected to determine the heat transfer efficiency based on the radiator’s dimensional specifications and the fluid flow parameters between the coolant and air. Based on the results of the performance analysis and evaluation, it was found that the existing radiator is only capable of providing a heat transfer efficiency of 6.41%, with a Number of Transfer Units (NTU) value of 0.066227. Thermal performance evaluation shows that this existing unit only achieves an actual heat dissipation capacity of 1.2125 kW, which is significantly below the total dissipation requirement of 2.4 kW. The system’s performance was also confirmed to be inadequate, as evidenced by the minimal decrease in coolant temperature from 75 ℃ to only 72.4 ℃. Therefore, it is recommended to replace the radiator with a unit of higher thermal capacity and to install an active cooling system (electric fan) to address the cooling capacity deficit during continuous operation.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	Effectiveness-NTU, Fin and Tube Heat Exchanger, Kendaraan Hybrid, Kinerja Termal, Sistem Pendingin, Effectiveness-NTU, Fin-and-Tube Heat Exchanger, Hybrid Vehicles, Thermal Performance, Cooling Systems.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Dendi Satria Romadhan
Date Deposited:	06 Jul 2026 01:51
Last Modified:	06 Jul 2026 01:51
URI:	http://repository.its.ac.id/id/eprint/134302

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