Analisis Kinerja Kondensor Direct Contact Tipe Jetspray Berdasarkan Efektivitas dan Efisiensi Thermal PT Geothermal Energy Ulubelu

Authors

  • Elli Prastyo Akamigas Balongan

DOI:

https://doi.org/10.26874/jt.vol20no1.404

Keywords:

condensor, efficiency, effectiveness, temperature, flowrate

Abstract

PT Pertamina geothermal energy (PGE) Ulubelu uses jetspray-type condensers with the task of changing the vapour phase from turbine (steam tubin) to liquid. Condenser input fluid is the output of turbines (steam and non condensable gas), operating at a constant pressure of 0,08 bar and an average temperature of 28oC. Evaluation of condenser performance is based on the temperature and flow rate (condenser entry fluid and cooled water flow rate) against the value of thermal efficiency and effectiveness. The highest effectiveness value of 79,4% occurred when the Qaktual value was 10,891oC, while the lowest effectiveness value of 78,2% occurred when the Qaktual value was 10,306oC. The highest condenser thermal efficiency occurred in week 4 at 52,3% with Qair 441,149,944.2 kJ/h. Qair value of 417.424.072,6 kJ/h resulted in a condenser thermal efficiency of 49,5% in the first week. The calculation results were then visualized using a graph showing when Q was raised from 4,17.108 kJ/kg to 4,4.108 kJ/kg condenser efficiency increased by 0,6%.

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References

Apriyanti, V. (2015). Perancangan Perangkat Eksperimen Kondensasi Kontak Langsung dengan Keberadaan Non Condensable Gas. Banjarmasin: Fakultas Tektik Mesin Dan Dirgantara Institut Teknologi Bandung. Proceeding seminar Nasional Tahun Tahunan Teknik Mesin Xiv (snttm Xiv): 62.

Celata, G. P., Cumo, M., D'Annibale, F.,Farello, G. E. (1991). Direct Contact Condensation of Steam on Droplets. International JournalMultiphase Flow, 191-211

Dipippo, R. (2012). Geothermal Power Plant: Principle, Application and Case Study, Elsevier Sciense, Oxford, UK.

Gokcen, G.,Yildirim, N. (2008). Effect of Non-condensable Gases on Geothermal PowerCase Study: Kizildere Geothermal PowerPlant-Turkey. International Journal of Exergy, 684–695

Incropera, F. P., DeWitt, D. P. (2005). Fundamentals of Heat and Mass Transfer,5th ed, John Wiley & Son Pte. Ltd.Singapore.

Lee, H., Kim, M.,Park, S. (2001). The Effect of Non-Condensable Gas on Direct ContactCondensation of Stream/Air Mixture. Journal of the Korean Nuclear Society, 585-595.

Lekic, A.,Ford, J. D. (1980). Direct Contact Condensation of Vapour on A Spray of Subcooled Liquid Droplets. Int. J. Heat MassTransfer, 1531-1537.

Neny, M.S. (2018). Teknik Geotermal: Institut Teknologi Bandung

Clinton, S. (2020). Analisa Efisiensi Termal Turbin, Kondensor dan Menara Pendingin pada Pembangkit Listrik Tenaga Panas Bumi: Politeknik Energi dan Mineral Akamigas.

Idawati, S. (2016). Pengaruh Suhu Terhadap Perpindahan Panas Pada Material Yang Berbeda. Pogram Studi Fisika, Fakultas Sains. Universitas Cokroaminoto Palopo Erich, H. (2006).

Wahyuningsih, R.,Sitorus, K. (2005). Pengawasan Eksplorasidan Eksploitasi Lapangan Panas Bumi yang Telah Beroperasi. Direktorat Inventarisasi Sumber Daya Mineral,Jakarta.

Zarrouk, J. S. (2012). Efficiency of Geothermal Power Plants: A Worldwide Review, Department of Engineering Sciences, University of Auckland, New Zealand.

Additional Files

Published

2021-06-30

How to Cite

Elli Prastyo. (2021). Analisis Kinerja Kondensor Direct Contact Tipe Jetspray Berdasarkan Efektivitas dan Efisiensi Thermal PT Geothermal Energy Ulubelu. Jurnal Teknik: Media Pengembangan Ilmu Dan Aplikasi Teknik, 20(1), 01–10. https://doi.org/10.26874/jt.vol20no1.404