KHOLIQ, MUHAMMAD FERDIAN NUR (2025) ANALISIS EFEKTIVITAS HIGH PRESSURE HEATER 3 SETELAH PERBAIKAN KEBOCORAN PADA PLTU SUPERCRITICAL 1 X 315 MW UBP BANTEN 3 LONTAR. S1 thesis, Universitas Mercu Buana Jakarta.
|
Text (HAL COVER)
01 COVER.pdf Download (5MB) | Preview |
|
![[img]](https://repository.mercubuana.ac.id/style/images/fileicons/text.png) |
Text (BAB I)
02 BAB I.pdf Restricted to Registered users only Download (111kB) |
|
|
Text (BAB II)
03 BAB II.pdf Restricted to Registered users only Download (514kB) |
|
|
Text (BAB III)
04 BAB III.pdf Restricted to Registered users only Download (452kB) |
|
|
Text (BAB IV)
05 BAB IV.pdf Restricted to Registered users only Download (493kB) |
|
|
Text (BAB V)
06 BAB V.pdf Restricted to Registered users only Download (26kB) |
|
|
Text (DAFTAR PUSTAKA)
07 DAFTAR PUSTAKA.pdf Restricted to Registered users only Download (130kB) |
|
|
Text (LAMPIRAN)
08 LAMPIRAN.pdf Restricted to Registered users only Download (746kB) |
Abstract
Supercritical PLTU requires high thermal efficiency, where the High-Pressure Heater (HPH) plays an important role in increasing the temperature of the feedwater before entering the boiler. The occurrence of leaks in the HPH can reduce the effectiveness of heat transfer so that it can disrupt the performance of the PLTU system. This study aims to analyze the effectiveness of HPH 3 after repairing leaks in the Supercritical PLTU 1 x 315 MW UBP Banten 3 Lontar. The method used includes collecting operational data after repairs through the Central Control Room (CCR) then measurements using thermocouples and transmitters and numerical analysis with the Log Mean Temperature Difference (LMTD) and Number of Transfer Unit (NTU) approaches where calculations use Microsoft Excel. The parameters calculated include the heat transfer rate (Q), the overall heat transfer coefficient (U) and effectiveness (ε) in three zones, namely desuperheating, condensing and subcooling. The results show that desuperheating performance has improved with an effectiveness of 99.35%, a heat transfer rate of 4,465 kW and an LMTD of 44.5 °C. On the condensing zone side, the effectiveness reached 90.3% with a heat transfer rate of 15,713 kW and an LMTD of 6.43°C. Meanwhile, in the lowest subcooling zone with an effectiveness of 72.6% even though the LMTD was stable at 10.16°C. The overall heat transfer coefficient (U) range is at 5,813 – 6,362 W/m²·°C. So, this shows that leak handling has succeeded in restoring and increasing the thermal efficiency of HPH 3, especially in the two main zones, but subcooling requires further maintenance to optimize flow distribution in the zone. Keywords : High Pressure Heater, Power Plant Supercritical, Effectiveness, Number of Transfer Unit (NTU), Log Mean Temperature Difference (LMTD). PLTU Supercritical membutuhkan efisiensi termal tinggi, di mana High Pressure Heater (HPH) berperan penting dalam meningkatkan temperatur feedwater sebelum masuk ke boiler. Terjadinya kebocoran pada HPH dapat menurunkan efektivitas perpindahan panas sehingga dapat mengganggu kinerja sistem PLTU. Penelitian ini bertujuan untuk menganalisis efektivitas HPH 3 setelah perbaikan kebocoran pada PLTU Supercritical 1 x 315 MW UBP Banten 3 Lontar. Metode yang digunakan meliputi pengumpulan data operasional sesudah dilakukan perbaikan melalui Central Control Room (CCR) kemudian pengukuran menggunakan thermocouple dan transmitter serta analisis numerik dengan pendekatan Log Mean Temperature Difference (LMTD) dan Number of Transfer Unit (NTU) dimana perhitungan menggunakan microsoft excel. Parameter yang dihitung meliputi laju perpindahan panas (Q), koefisien perpindahan panas menyeluruh (U) dan efektivitas (ε) pada tiga zona yaitu desuperheating, condensing dan subcooling. Hasil menunjukkan performa desuperheating membaik dengan efektivitas 99,35 % , laju perpindahan panas 4.465 kW dan LMTD 44,5 °C. Pada sisi zona condensing efektifitas mencapai 90,3 % laju perpindahan panas 15.713 kW dan LMTD sebesar 6,43°C. Sementara itu pada zona subcooling terendah dengan efektifitas 72,6 % meski LMTD stabil di 10,16 °C. Rentang koefisien perpindahan panas (U) keseluruhan berada pada 5.813 – 6.362 W/m²·°C. Sehingga hal ini menunjukkan penanganan kebocoran berhasil memulihkan dan meningkatkan efisiensi termal HPH 3 terutama pada dua zona utama, tetapi subcooling memerlukan pemeliharaan lanjutan untuk mengoptimalkan distribusi aliran pada zona tersebut. Kata kunci : High Pressure Heater, PLTU Supercritical, efektivitas, Number of Transfer Unit (NTU), Log Mean Temperature Difference (LMTD).
| Item Type: | Thesis (S1) |
|---|---|
| Call Number CD: | FT/MSN. 25 059 |
| NIM/NIDN Creators: | 41321120004 |
| Uncontrolled Keywords: | High Pressure Heater, PLTU Supercritical, efektivitas, Number of Transfer Unit (NTU), Log Mean Temperature Difference (LMTD). |
| Subjects: | 500 Natural Science and Mathematics/Ilmu-ilmu Alam dan Matematika > 530 Physics/Fisika > 536 Heat/Panas > 536.5 Temperature/Temperatur, Suhu 500 Natural Science and Mathematics/Ilmu-ilmu Alam dan Matematika > 530 Physics/Fisika > 536 Heat/Panas > 536.6 Calorimetry, Heat Capacity/Kalorimetri, Kapasitas Kalor 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan > 621.8 Machine Engineering, Machinery/Teknik Mesin |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | khalimah |
| Date Deposited: | 21 Aug 2025 03:09 |
| Last Modified: | 21 Aug 2025 03:09 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/96931 |
Actions (login required)
 |
View Item |
