Performance Evaluation of a Condenser at a Combined Cycle Power Plant Using the LMTD Method
DOI:
https://doi.org/10.22441/ijimeam.v6i2.27450Keywords:
condenser performance, heat transfer rate, LMTD, combined cycle power plant, scheduled maintenanceAbstract
This study evaluates the performance of the condenser at the Cilegon Combined Cycle Power Plant (CCPP) using the Logarithmic Mean Temperature Difference (LMTD) method to measure the heat transfer rate. Routine maintenance carried out on the condenser in the form of cleaning the condenser water box and condenser tube from garbage and crust on the condenser tube wall. Currently, condenser maintenance follows a routine schedule that is tied to steam turbine maintenance, without taking actual condenser performance into account. This can lead to inefficiencies and unnecessary downtime. The goal of this research is to assess the heat transfer rate of the condenser before and after maintenance to judge its effectiveness. Data on temperature changes were gathered in June 2023, before maintenance, and again in July 2023, after an overhaul. The analysis shows that the heat transfer rate increased from 51,362,294.48 kcal/h to 127,246,219.7 kcal/h, while the LMTD value rose from 0.76°C to 1.86°C. Based on these results, the study suggests a new approach to maintenance that focuses on performance. Specifically, maintenance should be done when the heat transfer rate drops below 110,000,000 kcal/h. This approach will help ensure the condenser works at its best, improve the plant's overall efficiency, and prevent the need for unnecessary maintenance. By aligning maintenance with performance data, the plant can boost output while lowering costs and downtime.
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References
D. Romahadi, N. Ruhyat, and L. B. D. Dorion, “Condensor design analysis with Kays and London surface dimensions,” Sinergi, vol. 24, no. 2, pp. 81–86, 2020.
D. Sumardiyanto and A. Januar, “Penentuan nilai efektivitas kondensor di PLTGU Blok 1-2 PT. Indonesia Power UPJP Priok,” J. Kaji. Tek. Mesin, vol. 5, no. 2, pp. 99–103, 2020.
C. Caroline and I. A. Rosid, “Pengukuran efisiensi perpindahan panas pada heat exchanger shell and tube dengan metode Log Mean Temperature Difference (LMTD),” in Conference SENATIK STT Adisutjipto Yogyakarta, Yogyakarta: Institut Teknologi Dirgantara Adisutjipto, 2022.
A. M. Antonova, A. V. Vorobiev, and A. Uvarov, “Technical and economic analysis of the combined-cycle plant with back-pressure steam turbine,” in MATEC Web of Conferences. Vol. 141: Smart Grids 2017.—Les Ulis, 2017., EDP Sciences, 2017, p. 1024.
A. Tiwari, M. Hasan, and M. Islam, “Exergy analysis of combined cycle power plant: NTPC Dadri, India,” Int. J. Thermodyn., vol. 16, no. 1, pp. 36–42, 2013.
K. L. Wong, W. L. Chen, and P. Li, “Reliable method of a non-insulated double-pipe heat exchanger,” Appl. Mech. Mater., vol. 284–287, pp. 908–914, 2013, doi: 10.4028/www.scientific.net/amm.284-287.908.
K. L. Wong, W. L. Chen, and Y. C. Chiu, “Inaccuracy of heat transfer characteristics of a metal duct neglecting heat radiation effect in ambient air,” Adv. Mater. Res., vol. 516–517, pp. 322–327, 2012, doi: 10.4028/www.scientific.net/amr.516-517.322.
A. Uvarov, A. Antonova, and A. Vorobjev, “The analysis of initial parameters of steam in the combined-cycle plant with high temperature gas turbine,” in MATEC Web of Conferences, EDP Sciences, 2015, p. 1062.
R. Rajesh and P. S. Kishore, “Thermal efficiency of combined cycle power plant,” Int. J. Eng. Manag. Res., vol. 8, no. 3, pp. 229–234, 2018.
İ. Karaçaylı, E. Şimşek, L. Altay, and A. Hepbaşlı, “Experimental and analytical investigation of heat transfer coefficient of a water cooled condenser for different water flows and condensation pressures,” Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Derg., vol. 33, no. 2, pp. 101–112, 2018.
A. Masyhuri, A. Puspawan, and A. Suandi, “Analisa efektivitas heat exchanger oil cooler sebelum dan sesudah maintenance,” Rekayasa Mek., vol. 6, no. 1, pp. 23–30, 2022.
N. Parlak, “Experimental validation of LMTD method for microscale heat transfer,” J. Therm. Eng., vol. 3, no. 2, pp. 1181–1195, 2017.
E. Pardede, “Analisa laju perpindahan kalor pada alat penukar panas kondensor pembangkit listrik tenaga uap (PLTU) di. PT XYZ,” J. VOKASI Tek., vol. 1, no. 01, pp. 46–53, 2023.
A. Rosyada, A. R. Anhar, and I. Silanegara, “Analisis kinerja kondensor unit iv sebelum dan sesudah overhaul,” J. Poli-Teknologi, vol. 16, no. 3, 2017.
A. R. Manopol, “Analisis perpindahan panas pada kondensor sebelum dan sesudah overhaul pada PLTU Blok III PT. PJB UP Gresik,” Thesis, Institut Teknologi Sepuluh Nopember, 2019.
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