Studi Numerik Dua Dimensi Labyrinth Seal Turbin Uap Organic Rankine Cycle (ORC) Type Straight-Through dengan Variasi Tekanan Inlet, Kecepatan Putaran Poros, Jarak Pitch, dan Tinggi Rongga
Submission Date: 2013-02-09 16:45:30
Accepted Date: 2013-03-01 00:00:00
Abstract
ORC (Organic Rankine Cycle) merupakan salah satu sistem pembangkit tenaga yang mampu memanfaatkan waste energy dengan menggunakan fluida organik yang mampu menguap pada temperatur dan tekanan rendah. Salah satu komponen utama pada sistem ORC adalah Turbin. Untuk mendapatkan efisiensi yang maksimal, kebocoran fluida pada turbin uap harus di minimalisir. Untuk itulah di perlukan penggunaan labyrinth seal untuk mengurai kebocoran fluida R123 pada turbin uap ORC. Pada dunia Industri jenis labyrinth seal sangat banyak sekali, salah satunya adalah labyrinth seal tipe Straight-Through. Penelitian ini dilakukan dengan metode numerik (CFD) software Fluent. Penelitian ini menggunakan variasi tekanan inlet yaitu 5, 10 dan 15 bar, putaran poros 0, 1500 dan 3000 rpm, panjang pitch 4 mm, 6 mm, 8 mm, 10 mm, serta tinggi rongga 3,415 mm, 3,915 mm dan 5,915 mm. Simulasi menggunakan model turbulensi k-ε RNG. Pada variasi tekanan inlet laju kebocoran paling besar terjadi pada tekanan 15 bar. Pada variasi putaran poros laju kebocoran terjadi berubah secara signifikan pada setiap variasi. Pada variasi tinggi rongga laju kebocoran paling kecil terjadi pada tinggi rongga 3,415 mm. Pada variasi panjang pitch, laju kebocoran paling kecil terjadi pada panjang pitch 10 mm.
Keywords
Fluent; labyrinth seal; laju alir massa; ORC; R123; turbin uap
CC Licencing
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
Refbacks
- There are currently no refbacks.
Jurnal Teknik ITS by Direktorat Riset dan Pengabdian Masyarakat (DRPM) ITS is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Based on a work at https://ejurnal.its.ac.id/index.php/teknik.
Statistik Pengunjung