Studi Analisa Pengaruh Penggantian Jenis Material dan Tebal Pipa Kondensor Terhadap Performa Perpindahan Panas di PLTU Paiton Unit 8

Sudewa, Immadudin Prima (2023) Studi Analisa Pengaruh Penggantian Jenis Material dan Tebal Pipa Kondensor Terhadap Performa Perpindahan Panas di PLTU Paiton Unit 8. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kondensor adalah alat penukar kalor yang berfungsi untuk mengondensasi uap keluaran turbin menjadi air kondensat. Kondensor PLTU Paiton Unit 8 merupakan tipe surface condenser yang digunakan dengan memanfaatkan air laut perairan Paiton, Probolinggo sebagai pendingin. Sebagaimana fungsinya, keberadaan kondensor sangat penting bagi PLTU karena sebagai sirkulator air feedwater boiler dimana siklus yang digunakan pada PLTU Paiton Unit 8 adalah siklus tertutup. Mengingat pentingnya peran yang dimiliki kondensor, maka penting untuk menjaga performanya agar tetap dapat berfungsi secara optimal. Kondensor yang dipakai secara berkelanjutan dalam beberapa waktu mengakibatkan penurunan efektivitas yang disebabkan oleh banyak faktor sehingga mempengaruhi effectiveness-nya dan mengurangi performa perpindahan panasnya. Atas dasar ini, maka kondensor harus dilakukan maintenance untuk menjaga kinerjanya. Salah satu bentuk maintenance yang dilakukan adalah retubing. Penelitian ini bertujuan untuk mengetahui prinsip kerja kondensor, melakukan analisa performansi pada kondensor terhadap kondisi commissioning dengan kondisi operasi, dan menganalisa pengaruh material dan profil tube sebagai langkah dalam melakukan proses retubing, serta analisa bagaimana pengaruh setelahnya.
Tahapan pada proyek kali ini melalui beberapa tahapan yaitu menghitung unjuk kerja kondensor menggunakan effectiveness-NTU method. Menghitung unjuk kerja kondensor terhadap variabel bebas berupa material dan ketebalan tube. Melakukan analisa studi korelasi dan penarikan kesimpulan.
Hasil dari penelitian yang dilakukan menunjukan setelah penggunaan, effectiveness kondensor menurun dari semula kondisi design sebesar 45.89% pada zona desuperheat menjadi 39.02% dalam kondisi operasi, sementara pada zona kondensasi juga mengalami penurunan dari 46.79% menjadi 32.47% pada kondisi operasional. Selanjutnya, dilakukan pengujian terhadap variabel dan didapatkan peningkatan effectiveness jika dilaksanakan retubing dari kondisi design menjadi 47.12% di zona desuperheat, dan 49.38% di zona kondensasi.
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A condenser is a heat exchanger that functions to condense turbine output steam into condensate water. The condenser of Paiton Unit 8 Power Plant is a type of surface condenser used by utilizing seawater in the waters of Paiton, Probolinggo as a coolant. As its function, the existence of a condenser is very important for the power plant because it is a feedwater boiler water circulator where the cycle used at Paiton Unit 8 Power Plant is a closed cycle. Given the important role of the condenser, it is important to maintain its performance so that it can still function optimally. Condensers that are used continuously for some time result in a decrease in effectiveness caused by many factors that affect their effectiveness and reduce their heat transfer performance. On this basis, the condenser must be maintained to maintain its performance. One form of maintenance carried out is retubing. This study aims to determine the working principle of the condenser, analyze the performance of the condenser on commissioning conditions with operating conditions, and analyze the influence of material and tube profiles as a step in carrying out the retubing process, as well as analyze how the influence afterwards.
The stages of this project go through several stages, namely calculating the performance of the condenser using the effectiveness-NTU method. Calculate condenser performance against independent variables in the form of material and tube thickness. Analyze correlation studies and draw conclusions.
The results of the research conducted showed that after use, the effectiveness of the condenser decreased from the original design conditions by 45.89% in the desuperheat zone to 39.02% in operating conditions, while in the condensing zone also decreased from 46.79% to 32.47% in operational conditions. Furthermore, testing of variables was carried out and obtained the effectiveness value if retubing applied and performance back to design conditions became 47.12% in the desuperheat zone, and 49.38% in the condensation zone.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Kondensor, Retubing, Effectiveness-NTU
Subjects:	Q Science > QC Physics > QC320 Heat transfer T Technology > TD Environmental technology. Sanitary engineering > TD899.S68 Steam power plants T Technology > TJ Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ263 Heat exchangers
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	IMMADUDIN PRIMA SUDEWA
Date Deposited:	29 Jan 2024 05:10
Last Modified:	29 Jan 2024 05:10
URI:	http://repository.its.ac.id/id/eprint/102838

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