Simulasi 3D Analisa Aliran Dan Perpindahan Panas Pada Concentric Tube Heat Exchanger Dengan Variasi Jarak Fin Baffle

Arifin, Agus Choirul (2016) Simulasi 3D Analisa Aliran Dan Perpindahan Panas Pada Concentric Tube Heat Exchanger Dengan Variasi Jarak Fin Baffle. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Simulasi 3D concentric tube heat exchanger dilakukan bertujuan untuk mengetahui fenomena pola aliran dan perpindahan panas pada kondisi steady dan peningkatan nilai perpindahan panas dengan penambahan fin baffle di pipa luar. Geometri model heat exchanger yang digunakan pada penelitian ini adalah diameter inner tube 35 mm, ketebalan inner tube 3 mm, diameter outer tube 70 mm dan panjang heat exchanger adalah 1000 mm. Model heat exchanger yang disimulasikan meliputi counter flow, parallel flow dengan dan tanpa penambahan fin baffle serta variasi jarak fin baffle. Variasi Reynolds number diberikan pada skala 2.4 x103 hingga 4x 103 dalam turbulent region. Simulasi dilakukan dengan menggunakan fluida kerja air dengan temperatur 293 K sebagai fluida cold yang dialirkan di outer tube dan air dengan temperatur 353K sebagai fluida hot dialirkan di inner tube. Hasil simulasi model akan diperoleh berupa temperatur keluaran dari fluida hot maupun fluida cold, heat transfers rate, dan distribusi temperatur di sepanjang pipa. Berdasarkan hasil simulasi ditunjukkan heat transfer pada counter flow lebih besar dibandingkan parallel flow sebesar 0.558% dan penambahan fin baffle dengan jarak 1x Do dibandingkan dengan counter flow tanpa fin baffle memberikan peningkatan heat transfers sebesar 37.16%. ================================================================================================================== 3D simulation of concentric tube heat exchanger aimed to find out the phenomenon of flow patterns and heat transfer in steady and increase the value of heat transfer with the addition of baffles in outer tube. Geometry models of heat exchangers used in this study is the inner tube diameter of 35 mm, the thickness of the inner tube 3 mm, 70 mm tube outer diameter and length of the heat exchanger is 1000 mm. The model simulated heat exchanger includes counter flow, parallel flow with and without the addition of baffles and distance variation fin baffles. Variations Reynolds number is given on a scale of 2.4 X103 up to 4x 103 in a turbulent region. Simulations carried out by using a working fluid water with a temperature of 293 K as a cold fluid that flows in the outer tube and water with a temperature of 353K as a hot fluid flows in the inner tube. The results of the simulation model will be obtained in the form of outlet temperature of hot fluid and cold fluid, heat transfers rate, and the temperature distribution along the pipeline. Based on simulation results shown on counter flow heat transfer is greater than the parallel flow amounted to 0.558% and the addition of a baffle fin with 1x distance Do compared with counter flow without baffle provides enhanced heat transfers amounted to 37.16%.

Item Type: Thesis (Masters)
Additional Information: RTM 621.402 5 Ari s
Uncontrolled Keywords: Concentric tube heat exchanger, Counter flow, Parallel flow, Fin baffle, Reynolds number
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ263 Heat exchangers
Divisions: Faculty of Industrial Technology > Mechanical Engineering > 21101-(S2) Master Thesis
Depositing User: ansi aflacha
Date Deposited: 07 Jul 2020 02:18
Last Modified: 07 Jul 2020 02:18
URI: http://repository.its.ac.id/id/eprint/76315

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