Studi Numerik Pengaruh Posisi Compact Heat Exchanger Terhadap Sistem Pendinginan Pada Mobil Formula Elektrik Mark 2.0

Humaidi, Fahri (2021) Studi Numerik Pengaruh Posisi Compact Heat Exchanger Terhadap Sistem Pendinginan Pada Mobil Formula Elektrik Mark 2.0. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Perkembangan pada alat penukar panas berjenis compact heat exchanger khusunya pada mobil formula sangat meningkat pesat. Pengembangan compact heat exchanger ini juga perlu dilakukan pada mobil formula elektrik Anargya ITS yang akan diikutesertakan pada ajang perlombaan Student Formula Japan (SFJ) 2021 dimana setiap tim dituntut untuk menyelesaikan endurance event yang mengharuskan mobil dapat bertahan dan menempuh jarak sejauh 22 km. Pada SFJ 2019 untuk kategori EV Class, dari 27 tim hanya 2 tim yang mampu menyelesaikan endurance event. Beberapa diantaranya disebabkan oleh kurang optimalnya cooling system yang ada pada mobil sehingga menyebabkan mesin pada mobil formula elektrik overheat. Oleh sebab itu, perlu dilakukan penelitian lebih lanjut mengenai radiator mobil formula ini. Salah satu caranya yaitu dengan melakukan peninjauan posisi radiator.
Tugas akhir ini menggunakan perangkat lunak ANSYS FLUENT untuk melakukan simulasi penempatan radiator pada sidepod mobil formula elektrik ANARGYA MARK 2.0. Pemodelan simulasi pada penelitian ini yaitu dengan simplifikasi bagian fin menjadi porous medium. Simulasi dibagi menjadi dua tahap, pertama simulasi satu unit cell fin yang hasilnya digunakan untuk mengetahui parameter porous medium fin. Kedua, simulasi radiator secara utuh untuk mengetahui pengaruh sudut posisi radiator terhadap aliran udara dengan variasi posisi 90˚, 60˚, 30˚ terhadap sumbu-x. Selain itu, kecepatan aliran udara juga divariasikan mulai dari 20, 30, 40, 50, 60, 70 km/jam dengan temperature inlet udara 30˚C. Variabel fluida panas di variabelkan tetap dengan temperature inlet 50˚C dan massflowrate 8lpm.
Dari hasil penelitian yang telah dilakukan, didapatkan bahwa pengaruh dari kecepatan udara sebanding dengan distribusi temperature fluida panas pada radiator. Posisi yang paling baik untuk menyerap panas adalah posisi radiator dengan sudut elevasi 60˚ terhadap sumbu-x dengan maksimal perpindahan panas yang terjadi 7436,38 W. Sedangkan untuk pressure drop maksimum terjadi pada pemasangan 30˚ dengan nilai 461.084 Pa.
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The development of a heat exchanger type compact heat exchanger, especially in formula cars, is increasing rapidly. The development of this compact heat exchanger also needs to be carried out on the Anargya ITS electric formula car which will be included in the 2021 Student Formula Japan (SFJ) competition where each team is required to complete an endurance event which requires the car to survive and cover a distance of 22 km. In the 2019 SFJ for the EV Class category, out of 27 teams, only 2 teams were able to complete the endurance event. Some of them are caused by the inadequate cooling system in the car, which causes the engine in the electric formula car to overheat. Therefore, it is necessary to do further research on this formula car radiator. One way is to do a review of the position of the radiator.
This final project uses ANSYS FLUENT software to simulate the placement of the radiator on the sidepod of the ANARGYA MARK 2.0 electric formula car. Simulation modeling in this research is by simplifying the fin part to become a porous medium. The simulation is divided into two stages, the first is one unit cell fin simulation where the results are used to determine the parameters of the porous medium fin. Second, the complete simulation of the radiator to determine the effect of the angle of the radiator position on the air flow with various positions of 90˚, 60˚, 30˚ on the x-axis. In addition, the air flow velocity is also varied from 20, 30, 40, 50, 60, 70 km / hr with an air inlet temperature of 30˚C. The hot fluid variable is fixed with an inlet temperature of 50˚C and a mass flowrate of 8lpm.
From the results of research that has been done, it was found that the effect of air velocity is proportional to the temperature distribution of the hot fluid on the radiator. The best position to absorb heat is the position of the radiator with an elevation angle of 60˚ to the x-axis with a maximum heat transfer that occurs 7436.38 W. Meanwhile, the maximum pressure drop occurs at 30˚ installation with a value of 461.084 Pa.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Radiator, Numerik, Numerical, Porous Medium
Subjects:	T Technology > T Technology (General) > T57.62 Simulation T Technology > TJ Mechanical engineering and machinery > TJ263 Heat exchangers T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL220 Electric vehicles and their batteries, etc.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Fahri Humaidi
Date Deposited:	27 Jul 2021 08:56
Last Modified:	27 Jul 2021 08:56
URI:	http://repository.its.ac.id/id/eprint/84516

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