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ITS » Paper and Presentation » Teknik Fisika S1
Posted by dv@its.ac.id at 15/04/2016 15:54:51  •  1260 Views


INVESTIGATION OF FLUID FLOW AND HEAT TRANSFER CHARACTERISTIC IN SHELL AND TUBE HEAT EXCHANGER DESIGN WITH HELICAL BAFFLE USING COMPUTATIONAL FLUID DYNAMICS CFD

INVESTIGASI KARAKTERISTIK ALIRAN FLUIDA DAN PERPINDAHAN PANAS PADA DESAIN HELICAL BAFFLE PENUKAR PANAS TIPE SHELL AND TUBE BERBASIS KOMPUTASI DINAMIKA FLUIDA CFD

Author :
HUSAINIY, MIRZA QUANTA AHADY ( 2408100023 )




ABSTRAK

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 70 dengan peningkatan koefisien x perpindahan panas konveksi sebesar 7.63 x 106 Wm2K 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.


ABSTRACT

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 Zhangs 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 70 with the increased heat transfer coefficient of 7.63 106 Wm2K 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.



KeywordsSegmental baffle; helical baffle; CFD; karakteristik aliran fluida; karakteristik perpindahan panas
 
Subject:  Heat-exchangers; Heat -transmission
Contributor
  1. Dr. Gunawan Nugroho, ST. MT.
Date Create: 15/04/2016
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-paper-24121160008858
Collection ID: 24121160008858
Call Number: RSF 621.402 5 Hus i


Source
Paper and presentation, Physics Engineering, RSF 621.402 5 Hus i, 2014

Rights
Copyright @2016 by ITS Library. This publication is protected by copyright and per obtained from the ITS Library prior to any prohibited reproduction, storage in a re transmission in any form or by any means, electronic, mechanical, photocopying, reco For information regarding permission(s), write to ITS Library




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  1.  ITS-paper-41161-2408100023-Paper.pdf - 539 KB
  2.  ITS-paper-41161-2408100023-Presentation.pdf - 1915 KB




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