Analisa Keandalan Heat Exchanger Pada Crude Preheat Train Berdasarkan Efisiensi Termal

Kurniawan, Bagus Seta (2023) Analisa Keandalan Heat Exchanger Pada Crude Preheat Train Berdasarkan Efisiensi Termal. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Heat exchanger network memiliki peran penting dalam proses industri sehingga perlu pemeliharaan. Dalam banyak kasus, fouling adalah masalah utama yang menurunkan kinerja Heat exchanger. Kinerja ini dapat dilihat melalui penurunan koefisien perpindahan panas keseluruhan (U) Heat exchanger. Dalam makalah ini, keandalan penukar panas dapat dianalisis melalui efisiensinya. Fouling pada Heat exchanger dimodelkan menggunakan parameter Boltzmann-sigmoid 4 dan dapat dimodelkan sebagai karakteristik linear, eksponensial, dan sigmoidal fouling. Keandalan memiliki korelasi erat dengan koefisien perpindahan panas keseluruhan (U) yang dapat dihitung berdasarkan pendekatan membandingkan koefisien perpindahan panas aktual dengan koefisien perpindahan panas desain atau efisiensi. Disimpulkan bahwa keandalan tergantung pada koefisien perpindahan panas desain dan resistansi fouling. Didapatkan nilai keandalan yang didapatkan dari hasil perhitungan untuk waktu operasi setelah 1 tahun berdasarkan data yang didapatkan untuk masing-masing Heat exchanger adalah: 0,4; 0,17; 0,14; 0,15; 0,14; 0,25; 0,29; 0,14; 0,18; 0,18; 0,18. Dimana batas keandalan dari suatu crude preheat train adalah 0,18
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Heat exchanger network has important role in the industrial processes so it needs to be maintained. In many cases, fouling is the main problem that decreases the performance of Heat exchangers. This performance can be seen through a decrease in the overall heat transfer coefficient (U) of Heat exchanger. In this paper, the Heat exchangers reliability can be analyzed through its efficiency. Fouling in Heat exchangers was modeled using Boltzmann-sigmoid 4 parameters and can be modeled as linear, exponential, and sigmoidal of fouling characteristics. Reliability has close correlation with overall heat transfer coefficient (U) that can be calculated based on the approach of comparing the actual heat transfer coefficient with the designed heat transfer coefficient or efficiency. It was concluded that the reliability depends on the coefficient of cleaned heat transfer (design) and fouling rate. The reliability values obtained from the calculation results for operating time after 1 year based on the data obtained for each Heat exchanger are: 0.4; 0.17; 0.14; 0.15; 0.14; 0.25; 0.29; 0.14; 0.18; 0.18; 0.18. Where the reliability limit of a crude preheat train is 0.18.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Keadalan, Heat exchanger, Fouling, Perpindahan Panas Reliability, Heat Transfer
Subjects:	T Technology > TS Manufactures > TS174 Maintainability (Engineering) . Reliability (Engineering)
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Bagus Seta Kurniawan
Date Deposited:	24 Jul 2023 03:12
Last Modified:	24 Jul 2023 03:12
URI:	http://repository.its.ac.id/id/eprint/99051

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