Analisa Fin Performance pada Lube Oil Cooler pada Steam Turbine Generator Blok 2 PLTGU Grati

Adinurcahyo, Pandu (2025) Analisa Fin Performance pada Lube Oil Cooler pada Steam Turbine Generator Blok 2 PLTGU Grati. Project Report. [s.n.]. (Unpublished)

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Abstract

Berikut adalah draf abstrak dalam bahasa Indonesia dan bahasa Inggris berdasarkan isi dari laporan magang industri yang Anda berikan:ABSTRAKSistem pelumasan pada Steam Turbine Generator memainkan peran krusial dalam menjaga keandalan operasional pembangkit listrik. Salah satu komponen utamanya adalah Lube Oil Cooler yang berfungsi mendinginkan temperatur oli pelumas untuk mempertahankan viskositas optimal. Laporan magang industri ini bertujuan untuk menganalisis performa sirip (fin) pada Lube Oil Cooler di Steam Turbine Generator Blok 2 PT PLN Indonesia Power Grati. Metode penyelesaian tugas khusus yang digunakan meliputi observasi langsung di lapangan, wawancara, dan studi literatur. Analisis performa dilakukan melalui perhitungan perpindahan panas secara teoritis menggunakan persamaan bilangan Reynolds dan Nusselt, dengan mengasumsikan kondisi steady state serta aliran satu dimensi di sepanjang fin. Hasil perhitungan menunjukkan bahwa nilai koefisien perpindahan panas konveksi (h) udara adalah 70,2 $W/m^2K$. Berdasarkan nilai tersebut, diperoleh efisiensi sirip ($\eta$) sebesar 49,66% dengan laju perpindahan panas sebesar 6,74 J/s. Nilai efisiensi ini menunjukkan performa yang kurang optimal karena angka ideal efisiensi seharusnya berada pada kisaran 60-90%. Oleh karena itu, direkomendasikan adanya modifikasi pada penggunaan material atau bentuk geometri fin untuk meningkatkan efektivitas perpindahan panas dari pelat ke udara pendingin.
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The lubrication system in a Steam Turbine Generator plays a crucial role in maintaining the operational reliability of a power plant. One of its main components is the Lube Oil Cooler, which functions to cool the lubricating oil temperature to maintain its optimal viscosity. This industrial internship report aims to analyze the fin performance of the Lube Oil Cooler in the Steam Turbine Generator Block 2 at PT PLN Indonesia Power Grati. The methods used for this specific task include direct field observation, interviews, and literature study. The performance analysis was conducted through theoretical heat transfer calculations using Reynolds and Nusselt numbers, assuming steady-state conditions and one-dimensional flow along the fin. The calculation results show that the convective heat transfer coefficient (h) of the air is 70.2 $W/m^2K$. Based on this value, the obtained fin efficiency ($\eta$) is 49.66%, with a heat transfer rate of 6.74 J/s. This efficiency value indicates suboptimal performance, as the ideal efficiency should be in the range of 60-90%. Therefore, it is recommended to modify the material or geometric shape of the fin to improve the heat transfer effectiveness from the plate to the cooling air.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	Lube Oil Cooler, Steam Turbine, Performa Fin, Efisiensi Sirip, Perpindahan Panas, PLTGU. Lube Oil Cooler, Steam Turbine, Fin Performance, Fin Efficiency, Heat Transfer, Combined Cycle Power Plant.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1077 Lubrication and lubricants. T Technology > TJ Mechanical engineering and machinery > TJ174 Maintenance and repair of machinery T Technology > TJ Mechanical engineering and machinery > TJ263 Heat exchangers T Technology > TJ Mechanical engineering and machinery > TJ265.E23 Thermodynamics. T Technology > TJ Mechanical engineering and machinery > TJ935 Pipe--Fluid dynamics. Tubes--Fluid dynamics
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Pandu Adinurcahyo
Date Deposited:	07 Jul 2026 06:58
Last Modified:	07 Jul 2026 06:58
URI:	http://repository.its.ac.id/id/eprint/134388

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