Evaluasi Tubes Plugging terhadap Kinerja Kondensor PLTU Adipala
DOI:
https://doi.org/10.58466/mxrx6568Keywords:
condenser; tubes plugging; LMTD; temperature rise; overall heat-transfer coefficientAbstract
This study evaluates the effect of tubes plugging on the condenser performance of Unit 1 at PLTU Adipala 1x660 MW. The analysis used operating data before plugging on 26 October 2017, 26 October 2018, and 29 November 2018, and after plugging on 29 October 2017, 2 November 2018, and 9 February 2019. Condenser performance was assessed using logarithmic mean temperature difference (LMTD), temperature rise (TR), heat-transfer area, heat load, and overall heat-transfer coefficient (U). The results show that after the third plugging condition, LMTD decreased to 7.413 °C in condenser A and 8.145 °C in condenser B, while TR decreased to 9.855 °C and 8.716 °C, respectively. Although U increased to 29.893 kW/m².°C in condenser A and 23.732 kW/m².°C in condenser B, the increase was associated with higher cooling-water flow demand and reduced active heat-transfer area. The findings indicate that tubes plugging is effective as short-term leakage mitigation, but increasing plug quantity reduces condenser heat-transfer capacity and requires monitoring of cooling-water flow, fouling, and condenser vacuum.
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References
[1] Zata Lini AS, Rudianto B. Penentuan nilai efektivitas condenser di PLTU Paiton Unit 5 PT YTL Jawa Timur. J Ilm Rotary. 2016;1(1):1-7.
[2] Natamenggala GM. Pengaruh plugging terhadap laju perpindahan panas condenser 1B Unit 1 pada PLTU PT PJB UP Gresik. Jakarta: STT-PLN; 2018.
[3] Makhfidhotul K, Sutjahjo DH. Re-design condenser PLTU Unit 4 studi kasus: PT PJB UP Gresik. JTM. 2016;4(3):335-342.
[4] Ramdani R, Sonawan H. Kaji teoritik pengaruh tube plugging terhadap penurunan beban pembangkit listrik tipe 625 MW reheat condensing steam turbine. Rekayasa dan Aplikasi Teknik Mesin di Industri. 2018;17:1-5.
[5] Moran MJ, Shapiro HN, Boettner DD, Bailey MB. Fundamentals of Engineering Thermodynamics. 8th ed. New Jersey: John Wiley & Sons; 2014.
[6] ASME. Performance Test Code on Steam Surface Condensers: Overall Heat Transfer Coefficient. New York: ASME PTC 12.2; 1998.
[7] Herawati DA. Pengaruh plugging terhadap laju perpindahan panas rotor cooling air pada PLTGU Blok 2 Unit 1 PT PJB UP Gresik. Jakarta: STT-PLN; 2017.
[8] Cengel YA, Ghajar AJ. Heat and Mass Transfer: Fundamentals and Applications. 5th ed. New York: McGraw-Hill; 2015.
[9] Incropera FP, DeWitt DP, Bergman TL, Lavine AS. Fundamentals of Heat and Mass Transfer. 7th ed. Hoboken: John Wiley & Sons; 2011.
[10] Kern DQ. Process Heat Transfer. New York: McGraw-Hill; 1950.
[11] Çengel YA, Boles MA. Thermodynamics: An Engineering Approach. 8th ed. New York: McGraw-Hill; 2015.
[12] Kakac S, Liu H, Pramuanjaroenkij A. Heat Exchangers: Selection, Rating, and Thermal Design. 3rd ed. Boca Raton: CRC Press; 2012.
[13] Pattanayak L, Ayyagari A, Kumar S. Thermal performance analysis of surface condenser in a thermal power plant. Int J Eng Res Technol. 2014;3(7):1120-1125.
[14] Putra YP, Supriyo B. Analisis performa kondensor pada pembangkit listrik tenaga uap berbasis parameter perpindahan panas. Jurnal Teknik Energi. 2019;15(2):65-72.
[15] HEI. Standards for Steam Surface Condensers. 12th ed. Cleveland: Heat Exchange Institute; 2017.
[16] Putra TS, Prabowo E, Ramadani F. Pengaruh Overhaul Terhadap Kinerja High Pressure Heater Unit 3 PLTU Banten Lontar. JTM: JURNAL TEKNIK MESIN. 2026 Feb 1;2(1):10-5.
