Perancangan Dan Evaluasi Kinerja Shell And Tube Heat Exchanger Untuk Sistem Pendinginan Oli Hidrolik Mesin Press di PT. XYZ

Sukmana, Teresia Tabitha (2026) Perancangan Dan Evaluasi Kinerja Shell And Tube Heat Exchanger Untuk Sistem Pendinginan Oli Hidrolik Mesin Press di PT. XYZ. Project Report. [s.n]. (Unpublished)

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Abstract

Mesin press pada industri kertas memanfaatkan sistem hidrolik untuk menghasilkan gaya tekan yang besar dan stabil selama proses produksi. Selama operasi, oli hidrolik mengalami peningkatan temperatur akibat gesekan internal dan kehilangan energi pada sistem, sehingga berpotensi menurunkan viskositas oli, mempercepat degradasi komponen hidrolik, serta mengurangi keandalan sistem. Oleh karena itu, diperlukan sistem pendinginan yang mampu menjaga temperatur oli tetap berada pada kondisi operasi yang optimal. Penelitian ini bertujuan merancang dan mengevaluasi kinerja Shell and Tube Heat Exchanger (STHE) sebagai sistem pendinginan oli hidrolik menggunakan media pendingin air (water–oil heat exchanger). Perancangan dilakukan berdasarkan metode Kern dengan menggunakan data operasi berupa laju alir, temperatur masuk dan keluar fluida, serta sifat fisik fluida. Selanjutnya dilakukan evaluasi terhadap parameter perpindahan panas meliputi heat duty, Log Mean Temperature Difference (LMTD), koefisien perpindahan panas menyeluruh (overall heat transfer coefficient), dirt factor, pressure drop, dan efektivitas heat exchanger. Optimasi desain dilakukan menggunakan Microsoft Excel Solver untuk memperoleh performa perpindahan panas yang lebih baik. Hasil perancangan menunjukkan bahwa heat exchanger mampu mendinginkan oli hidrolik dari 60°C menjadi 45°C dengan efektivitas awal sebesar 72%, sedangkan hasil optimasi meningkatkan efektivitas menjadi 75%, meningkatkan nilai overall heat transfer coefficient menjadi 195 Btu/jam.ft².°F, serta menurunkan dirt factor menjadi 0,9 jam.ft².°F/Btu. Hasil penelitian menunjukkan bahwa desain hasil optimasi memiliki kinerja perpindahan panas yang lebih baik dan layak diterapkan untuk mendukung kestabilan temperatur oli hidrolik pada sistem mesin press.
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The press machine in the paper industry utilizes a hydraulic system to generate high and stable pressing forces during the production process. During operation, hydraulic oil experiences a temperature increase due to internal friction and energy losses, which may reduce oil viscosity, accelerate hydraulic component degradation, and decrease system reliability. Therefore, an effective cooling system is required to maintain the hydraulic oil within its optimal operating temperature range. This study aims to design and evaluate the performance of a Shell and Tube Heat Exchanger (STHE) as a hydraulic oil cooling system using water as the cooling medium (water–oil heat exchanger). The design was carried out using the Kern method based on operating data, including flow rates, inlet and outlet temperatures, and fluid properties. Performance evaluation was conducted by analyzing heat duty, Log Mean Temperature Difference (LMTD), overall heat transfer coefficient, dirt factor, pressure drop, and heat exchanger effectiveness. Furthermore, Microsoft Excel Solver was employed to optimize the design parameters for improved thermal performance. The results indicate that the proposed heat exchanger is capable of reducing the hydraulic oil temperature from 60°C to 45°C with an initial effectiveness of 72%. After optimization, the effectiveness increased to 75%, the overall heat transfer coefficient increased to 195 Btu/hr.ft².°F, and the dirt factor decreased to 0.9 hr.ft².°F/Btu. These findings demonstrate that the optimized heat exchanger design provides better heat transfer performance and is suitable for maintaining hydraulic oil temperature stability in the press machine cooling system.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	Shell and Tube Heat Exchanger, oli hidrolik, mesin press, perpindahan panas, optimasi. Shell and Tube Heat Exchanger, hydraulic oil, press machine, heat transfer, optimization.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ223.A25 Actuators. T Technology > TJ Mechanical engineering and machinery > TJ870 Hydraulic turbines.
Divisions:	Faculty of Vocational > 24305-Industrial Chemical Engineering Technology
Depositing User:	Teresia Tabitha Sukmana
Date Deposited:	30 Jul 2026 06:18
Last Modified:	30 Jul 2026 06:18
URI:	http://repository.its.ac.id/id/eprint/140869

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