RE-DESIGN SURFACE CONDENSER DI PLTU UNIT 4 PT. PJB UP GRESIK DENGAN ANALISIS TERMAL

ANDRIANTO, BOBBY (2015) RE-DESIGN SURFACE CONDENSER DI PLTU UNIT 4 PT. PJB UP GRESIK DENGAN ANALISIS TERMAL. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

PT. Pembangkitan Jawa-Bali (PJB) Unit Pembangkitan Gresik merupakan anak perusahaan dari BUMN PT. PLN yang bergerak dalam bidang konversi energi khususnya di bidang pembangkitan. PT. PJB UP Gresik tersebut memiliki tiga jenis pembangkit yaitu PLTU, PLTG dan PLTGU. Pada sebuah PLTU unit 4, kondensor sering mengalami masalah sehingga mengakibatkan penurunan performansi. Masalah-masalah yang didapat dari data di PT. PJB UP Gresik yaitu kebocoran pada sisi tube, penurunan kevakuman, penurunan level air laut dan korosi pada sisi tube. Tugas akhir ini bertujuan untuk mendesain ulang surface condenser dengan material tube titanium dan menguji performansi dari surface condenser terhadap jumlah plugging. Dimensi shell surface condenser, diameter luar tube, data operasi dijaga tetap, sedangkan data yang divariasi adalah ketebalan dari tube. Tugas akhir ini dilakukan dengan beberapa tahapan, yaitu pengambilan data di PT. PJB UP Gresik, pendesainan ulang surface condenser, melakukan uji performansi dengan dimensi optimal. Penghitungan re-design dimulai dengan mencari kalor di tiap zona (desuperheating, condensing dan subcooling), pressure drop hingga perhitungan jumlah tube dengan nilai kalor dijaga tetap. Perhitungan re-design digunakan untuk mencari dimensi optimal. Perhitungan uji performansi surface condenser dilakukan dengan variasi plugging 0% - 20%. "=============================================================================================" PT. Pembangkitan Jawa-Bali (PJB) Unit Pembangkitan Gresik is a subsidiary of PT. PLN which is working in the field of energy conversion, especialy in the field of power plants. PT. PJB UP Gresik has three type power plants, that are steam power plants, gas power plants dan gas-steam power plants. Surface condenser in steam power plats unit 4, often have problems that result in decreased its performance. The problems are leak in the tube-side, decrease vacuum pressure,decrease the level of sea water and corrosion in the tube-side. This finl project aims to redesign surface condenser with titanium tube and test the performance of the surface condenser to number of plugging. Dimensions of shell, outside diameter of tube, and operating data is kept, but thickness of tube is varied. The final project is done in several stage, that is collecting data in PT. PJB UP Gresik, redesigning surface condenser and testing the performance with optimum dimenstions. Redesign calculation begins from finding the heat in each zone (desuperheating, condensing and subcooling zone), pressure drops to finding number of tube with heating value are kept. Redesign calculations are used to get optimum dimensions. Performance test calculations are carried out by plugging variation from 0% to 20%.

Item Type: Thesis (Undergraduate)
Additional Information: RSM 621.197 And r
Uncontrolled Keywords: Surface Condenser, titanium, redesign, tube, uji performansi
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Industrial Technology > Mechanical Engineering > (S1) Undergraduate Theses
Depositing User: Mrs Ansi Aflacha
Date Deposited: 05 Jan 2017 08:45
Last Modified: 05 Jan 2017 08:45
URI: http://repository.its.ac.id/id/eprint/1350

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