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ANALISA KONFIGURASI MAINSTEAM STOP VALVE DAN GOVERNOR VALVE PADA TURBIN UAP SUPERKRITIS MENGGUNAKAN KOMPUTASI FLUIDA DINAMIS UNTUK MEMINIMALKAN THROTTLE LOSSES

FAHMI, Jauhar and Silviana, Silviana and Sulistyo, Sulistyo (2025) ANALISA KONFIGURASI MAINSTEAM STOP VALVE DAN GOVERNOR VALVE PADA TURBIN UAP SUPERKRITIS MENGGUNAKAN KOMPUTASI FLUIDA DINAMIS UNTUK MEMINIMALKAN THROTTLE LOSSES. Masters thesis, UNIVERSITAS DIPONEGORO.

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Abstract

Kuantifikasi rugi-rugi dan Prediksi kelayakan teknis dari konfigurasi sistem yang ada dan konfigurasi system yang dimodifikasi melalui analisis numerik Komputasi Fluida Dinamis (CFD) merupakan fokus dari studi ini. Konfigurasi empat set Mainsteam Stop Valve, MSV, dan Governor Valve, GV, (4MSVGV) yang memiliki bukaan katup yang rendah (<30%) dibandingkan dengan dua set (2MSVGV) untuk melayani permintaan beban normal. Konfigurasi 2MSVGV menunjukkan kemampuan untuk melayani semua rentang beban dengan persyaratan umum GV lift <80mm. Analisa Throttle lossess yang dinyatakan dalam pembangkitan entropi dan eksergi destruksi dilakukan untuk membandingkan kedua konfigurasi tersebut sesuai dengan data yang diekstraksi dari pemodelan CFD. Data eksergi destruksi GV pada konfigurasi 4MSVGV menunjukkan rugi-rugi throttling yang jauh lebih dominan daripada eksergi destruksi MSV. Pada beban 855MW, eksergi destruksi untuk 4GV mencapai 21MW dibandingkan dengan 14MW untuk sistem 2GV yang dimodifikasi. Konfigurasi Sistem 2MSVGV memberikan perbaikan rata-rata eksergi destruksi sebesar 2,05MW.
Kata Kunci : Komputasi Fluida Dinamis, Throtlle Losses, Governor Valves, Exergy

This study focuses on the quantification of losses and the prediction of the technical feasibility of existing and proposed modified system configurations through Computational Fluid Dynamics (CFD) numerical analysis. The configuration of four sets of Main Steam Stop Valves and Governor Valves (4MSVGV), knowing operate at low valve openings (<30%) is compared with two sets MSVGV (2MSVGV) to serve normal load demand. The 2MSVGV configuration demonstrates the ability to serve all load ranges with a general requirement of GV lift <80mm. Throttle losses analysis expressed in entropy generation and exergy destruction was conducted to compare the two configurations according to data extracted from CFD modeling. Governor Valve exergy destruction data indicates significantly more dominant compared to MSV exergy destruction. At an 855MW load, exergy destruction within the governor valve reaches 21MW compared to 14MW for the modified 2GV system. The 2MSVGV system configuration provides an average exergy destruction improvement of 2.05MW.
Keywords – Computational Fluid Dynamics, Throttle Losses, Governor Valves, Exergy

Item Type: Thesis (Masters)
Uncontrolled Keywords: Komputasi Fluida Dinamis, Throtlle Losses, Governor Valves, Exergy
Subjects: Engineering
Divisions: Postgraduate Program > Master Program in Energy
Depositing User: ekana listianawati
Date Deposited: 14 Oct 2025 07:35
Last Modified: 14 Oct 2025 07:35
URI: https://eprints2.undip.ac.id/id/eprint/40029

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