Effect of baffle cut and baffle spacing on pressure drop in shell and tube heat exchanger with U tubes

Martić, Igor; Maslarevic, Aleksandar; Milovanovic, Nikola; Markovic, Miloš

doi:10.47577/technium.v2i2.355

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…Penelitian dengan memvariasikan baffle spacing 0.15 hingga 1 diameter shell. Hasil penelitian menunjukkan semakin kecil baffle spacing akan meningkatkan overall heat transfer coefficient dan pressure drop [2]. Penelitian mengenai baffle spacing secara eksperimen dan simulasi dilakukan oleh Zebua & Ambarita (2019).…”

Section: Pendahuluanunclassified

Studi Numerik Pengaruh Baffle Spacing Jenis Double Segmental terhadap Aliran Fluida dan Perpindahan Panas pada Shell And Tube Heat Exchanger

Indrastoto,

Dwiyantoro

2024

JTITS

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Abstrak-MasalahHeat exchanger di PLTA disebabkan oleh air sungai sebagai fluida pendingin terpengaruh oleh kondisi lingkungan sehingga dapat menyebabkan fouling. Salah satu cara mengatasi dengan menggunakan model double segmental baffle karena menghasilkan lebih banyak turbulensi yang dapat mengurangi terdepositnya fouling. Akan tetapi, standar TEMA ataupun pendekatan teoritis tidak mengatur secara spesifik untuk model tersebut sehingga harus dicari konfigurasi yang optimal. Dilakukanlah penelitian ini untuk mengetahui pengaruh baffle spacing terhadap aliran fluida, perpindahan panas, dan pressure drop STHX dengan jenis double segmental baffle. Penelitian studi numerik CFD menggunakan ANSY Fluent dengan memvariasikan jarak baffle 55 mm, 45 mm, dan 35 mm pada 90 mm diameter shell dengan mass flow rate fluida shell divariasikan 0.5 kg/s, 1 kg/s, dan 2 kg/s sedangkan mass flow rate fluida tube konstan 0.85 kg/s. Hasil simulasi CFD menunjukkan terdapat pengaruh pada turbulensi dan kecepatan pada baffle. Semakin kecil baffle spacing akan menghasilkan vortex dan streamline yang lebih kecil sehingga terjadi peningkatan kecepatan aliran pada cross flow split baffle dan central baffle. Terjadi peningkatan kecepatan aliran ratarata sebesar 0.9% pada spacing 45 mm dan 2.5% pada spacing 35 mm terhadap spacing 55 mm. Semakin kecil baffle spacing berpengaruh pada perpindahan panas dengan meningkatnya heat transfer coefficient. Variasi mass flow rate menghasillkan peningkatan h lokal rata-rata overall sebesar 6.26% pada spacing 45 mm dan 12.67% pada spacing 35 mm terhadap spacing 55 mm. Adapun pengecilan baffle spacing berpengaruh pada peningkatan pressure drop. Pada pressure drop lokal, variasi mass flow rate mengalami peningkatan rata-rata sebesar 3.1% pada spacing 45 mm dan 9% pada spacing 35 mm terhadap spacing 55 mm. Pada pressure drop overall, mengalami peningkatan rata-rata pada spacing 45 mm sebesar 21.43% dan 47.07% pada spacing 35 mm terhadap spacing 55 mm.

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Section: Pendahuluanunclassified

Studi Numerik Pengaruh Baffle Spacing Jenis Double Segmental terhadap Aliran Fluida dan Perpindahan Panas pada Shell And Tube Heat Exchanger

Indrastoto,

Dwiyantoro

2024

JTITS

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“…The gas-liquid two-phase flow can be found in vertical, horizontal, and inclined pipes. [1] It plays a significant role in a wide range of manufacturing and industry such as in boilers [2], petroleum industry chemical plants, heat transfer devices [3], nuclear reactor technology, and geothermal energy production.Many studies investigated the two-phase flow behavior and its flow development, focusing on flow patterns, pressure drop and system performance. [4] carried experimental and numerical investigation of two-phase flow orientation and direction change.…”

Section: Introductionmentioning

confidence: 99%

Experimental Comparison Between Wire Mesh and Electrical Capacitance Tomography Sensors to Predict a Two-Phase Flow Behaviour and Patterns in Inclined Pipe

Hameed¹,

Abdulkareem²,

Mahmood³

2021

Technium

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Two-phase flow behaviour and its flow patterns have a significant effect in many applications in industry. Oil-gas is one of the two-phase flow types that have many applications in petroleum and power stations. An oil-gas two-phase flow behaviour and flow patterns have been investigated in an inclined pipe using two different tomography sensors: Wire Mesh sensor (WMS) and Electrical Capacitance Tomography (ECT). A special experimental facility was designed and built to operate the tow-phase flow application in the inclined pipe with the various angle of inclination. A set of experimental data were collected using operating conditions which covered a two-phase flow range of superficial velocity of gas (Usl) from 0.05 to 0.52 m/s and superficial velocity of liquid (Usg) from 0.05 to 4.7 m/s at atmospheric pressure and room temperature. Three inclined angles to change the pipe’s inclination 45, 60, and 80-degree were applied in the experiments. The Comparison between the Wire Mesh Sensor (WMS) and Electrical Capacitance Tomography (ECT) was completed experimentally. The results revealed that there is a good agreement between the two sensors, however; the WMS had a higher frequency which was calculated 1000 frames per second compared with the ECT which worked at 200 frames per second.

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Lessen Pressure Drop and Forecasting Thermal Performance in U-Tube Heat Exchanger Using Chimp Optimization and Deep Belief Neural Network

Shailandra Kumar Prasad,

Mrityunjay Kumar Sinha

2023

Opt. Mem. Neural Networks

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Effect of baffle cut and baffle spacing on pressure drop in shell and tube heat exchanger with U tubes

Cited by 3 publications

References 4 publications

Studi Numerik Pengaruh Baffle Spacing Jenis Double Segmental terhadap Aliran Fluida dan Perpindahan Panas pada Shell And Tube Heat Exchanger

Studi Numerik Pengaruh Baffle Spacing Jenis Double Segmental terhadap Aliran Fluida dan Perpindahan Panas pada Shell And Tube Heat Exchanger

Experimental Comparison Between Wire Mesh and Electrical Capacitance Tomography Sensors to Predict a Two-Phase Flow Behaviour and Patterns in Inclined Pipe

Lessen Pressure Drop and Forecasting Thermal Performance in U-Tube Heat Exchanger Using Chimp Optimization and Deep Belief Neural Network

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