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All Journal Jurnal Mekanik Terapan
Ardi Wibowo
Politeknik Negeri Jakarta
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analysis of the Effect of Sootblowers on Superheater Heat Transfer Rates in Units 2 and 3 of the Indramayu Steam Power Plant (PLTU) Ardi Wibowo; Paulus Sukusno; Candra Damis Widiawaty
Jurnal Mekanik Terapan Vol 7 No 2 (2026): August 2026
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v7i2.8843

Abstract

Coal ash fouling on boiler superheater tubes causes a reduction in power plant thermal efficiency. This study analyzes the effect of sootblower operation on the heat transfer rate (Q) of Unit 2 and Unit 3 superheaters at Indramayu Power Plant. Secondary data from the Distributed Control System (DCS) were collected for 9 hours before and 9 hours after sootblowing under stable load conditions. The value of Q was calculated using Q = ṁ(hout − hin) with enthalpy values from IAPWS-IF97 steam tables. Results show that average Q for Unit 2 increased from 83.24 MW to 89.80 MW (a 7.88% rise) with a 7.37°C increase in outlet steam temperature. For Unit 3, average Q increased from 80.27 MW to 89.93 MW (a 12.03% rise) with a 10.98°C temperature increase. For the single sootblowing cycle observed in each unit, sootblower operation was associated with a clear increase in superheater heat transfer rate, indicating its potential as a reference for evaluating boiler cleaning schedules.
Co-Authors Candra Damis Widiawaty, Candra Damis Paulus Sukusno