Investigasi Karakteristik Aliran Fluida Dan Perpindahan Panas Pada Desain Helical Baffle Penukar Panas Tipe Shell And Tube Berbasis Komputasi Dinamika Fluida (Cfd)

Husainiy, Mirza Quanta Ahady (2014) Investigasi Karakteristik Aliran Fluida Dan Perpindahan Panas Pada Desain Helical Baffle Penukar Panas Tipe Shell And Tube Berbasis Komputasi Dinamika Fluida (Cfd). Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

Telah dilakukan studi numerik pengaruh tipe baffle segmental dan helical dengan variasi sudut baffle terhadap karakteristik aliran fluida dan perpindahan panas dengan menggunakan simulasi CFD. Penelitian ini bertujuan untuk menganalisis karakteristik aliran, yaitu kecepatan aliran fluida, temperature, koefisien perpindahan panas konveksi dan pressure drop terhadap pengaruh geometri berupa variasi tipe dan sudut baffle. Verifikasi dilakukan dengan membandingkan hasil simulasi terhadap data kuantitatif dari eksperimen Zhang dkk. (2011). Analisis kualitatif ditunjukkan pada kontur dan vector kecepatan, kontur turbulensi dan kontur temperatur. Analisis kuantitatif ditunjukkan dengan peningkatan nilai bilangan Reynolds, heat transfer rate, koefisien perpindahan panas konveksi dan pressure drop oleh ketiga variasi tipe baffle pada peningkatan debit aliran fluida. Adanya turbulensi pada hasil simulasi meperlihatkan adanya efek pengeblokan aliran akibat adanya baffle dengan tipe yang berbeda. Hal ini menyebabkan terbentuknya olakan aliran pada sisi shell. Vektor kecepatan memberikan prediksi arah aliran terhadap pengurangan temperature pada aliran fluida sisi shell. Hasil analisis menunjukkan karakteristik perpindahan panas dan aliran fluida terbaik diperoleh pada tipe helical baffle dengan sudut baffle 7 0 dengan peningkatan koefisien perpindahan panas konveksi sebesar 7.63 x 10 K dan penggunaan baffle helical hanya cocok untuk jarak aliran fluida yang lebih pendek karena akan menyebabkan pressure drop bernilai sangat besar yaitu 137.26 Pa ============================================================================================== Numerical studies have been done about the influence of segmental baffle type and helical baffle type with the variation of baffle angles towards fluid flow characteristic and heat transfer using CFD simulation. This study aims to analyze fluid flow characteristic which is fluid flow velocity, temperature, heat transfer coefficient and pressure drop towards the influence of geometry such as variation of type and baffle angles. Verification has done by compared simulation result towards quantitative data from Zhang’s experiment. Quantitative analyze has shown in the countour and vector of velocity, turbulence countour and temperature countour. Quantitative analyze has shown in the increasing of Reynolds Number, heat transfer rate, heat transfer coefficient and pressure drop by the all three variations of baffle type in the increasing of fluid flow rate. The presence of turbulence in simulation result has shown us about flow-blocking effect due to the different type of baffle. This led to the formation of Eddy flow on the shell side. Velocity vector gives a prediction about fluid flow directions towards the reductions of fluid flow temperature in shell side. Analytical result shown the best characteristic of heat transfer and fluid flow obtained on helical baffle type with baffle angle 7 0 with the increased heat transfer coefficient of 7.63 10 6 2 W/m K and the applications of this baffle only suitable for smaller fluid flow distance because it will cause a large pressure drop which shown in the simulation is 137.26 Pa

Item Type: Thesis (Undergraduate)
Additional Information: RSF 621.402 5 Hus i
Uncontrolled Keywords: segmental baffle, helical baffle, CFD, karakteristik aliran fluida, karakteristik perpindahan panas
Subjects: Q Science > QC Physics > QC320 Heat transfer
T Technology > TJ Mechanical engineering and machinery > TJ263 Heat exchangers
Divisions: Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User: EKO BUDI RAHARJO
Date Deposited: 21 Sep 2020 03:30
Last Modified: 21 Sep 2020 03:30
URI: https://repository.its.ac.id/id/eprint/81993

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