ANALISA ALIRAN UAP PANAS DARI SECONDARY SUPERHEATER KE HIGH PRESSURE TURBINE (STUDI KASUS: PLTU UNIT 1 PT PJB UP GRESIK)

SASMITRA, DANIEL KRISTANTO (2016) ANALISA ALIRAN UAP PANAS DARI SECONDARY SUPERHEATER KE HIGH PRESSURE TURBINE (STUDI KASUS: PLTU UNIT 1 PT PJB UP GRESIK). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tugas akhir ini dibuat untuk mendukung kebutuhan analisa sistem perpipaan uap yang semakin meningkat di Indonesia, terutama pada industri pembangkit listrik. Pada sistem perpipaan uap, daerah yang kritis berada di main steam line, sehingga diperlukan detail analisa terkait kehilangan energi di daerah tersebut. Tugas akhir ini dilakukan untuk menentukan kehilangan energi di main steam line PLTU Unit 1 PT PJB UP Gresik. Analisa dilakukan dari secondary superheater ke high pressure turbine. Main steam line memiliki masalah utama berupa penurunan tekanan, penurunan temperatur, dan aliran sekunder. Masalah tersebut menyebabkan penurunan kemampuan uap panas lanjut saat memasuki turbin. Main steam line yang dianalisa menggunakan material baja paduan chromium dan molybdenum sesuai standar STPA 24 pada JIS G3458. Fitting perpipaan yang dianalisa terdiri dari 90o bend, y-junction, dan main stop valve. Dalam tugas akhir ini, terdapat analisa secara analitik dan simulasi numerik. Analisa secara analitik dilakukan dengan persamaan energi, dan simulasi numerik dilakukan dengan bantuan perangkat lunak Fluent 6.3.26. Hasil analisa secara analitik menunjukkan penurunan tekanan keseluruhan sebesar 606,7 kPa, dan penurunan temperatur sebesar 0,166 K. Hasil penurunan tekanan tersebut berbeda dari data sensor sebesar 4,09 %, dan hasil penurunan temperatur tersebut berbeda dari data sensor sebesar 2,23 %. vi Hasil simulasi numerik menunjukkan penurunan tekanan pada salah satu bend sebesar 31,7 kPa, penurunan temperatur sebesar 0,003 K, dan terbentuk aliran sekunder. "=============================================================================================" he increasing need for analysis on steam piping system in Indonesia especially in Power Plant Industries induces the making of this final project. The critical region of steam piping system lies on its main steam line. Therefore, detailed analysis on main steam line which includes energy losses inside the system is necessary. This final project was conducted to determine the losses on a main steam line of PLTU Unit 1 PT PJB UP Gresik. Analysis was done from secondary superheater to high pressure turbine. The main concerns of steam flow problems on the region are pressure drop, temperature drop, and secondary flow. They cause the superheated steam energy to decrease as it enters the turbine. Material of the steam pipe is chromium–molybdenum steel alloy following STPA 24 grade of JIS G3458 standard. The fittings are 90o bends, y-junction, and a main stop valve. There are analytical and numerical studies on this final project. The analytical study was based on energy equation, while the numerical study was done using Fluent 6.3.26. The results from analytical study show pressure drop of 606.7 kPa, and temperature drop of 0.166 K. The result of pressure drop differs from the sensors by 4.09 %, and the temperature drop differs by 2.23 %. The results from numerical simulation on a particular bend show pressure drop of 31.7 kPa, temperature drop of 0.003 K, and an indication of secondary flow.

Item Type: Thesis (Undergraduate)
Additional Information: RSM 621.402 Sas a
Uncontrolled Keywords: high pressure turbine, penurunan tekanan, penurunan temperatur, superheater, uap panas lanjut
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ164 Power plants--Design and construction
Divisions: Faculty of Industrial Technology > Mechanical Engineering > (S1) Undergraduate Theses
Depositing User: Users 13 not found.
Date Deposited: 11 Jan 2017 06:41
Last Modified: 27 Dec 2018 07:07
URI: http://repository.its.ac.id/id/eprint/1477

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