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Celvin Putri Ariana
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Mechanical Engineering

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Analisis Efisiensi Termal Sistem Unit 1 pada Perubahan Beban di PT. Sari Dumai Sejati Celvin Putri Ariana; Iwan Kurniawan
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 13 No 02 (2026): Oktober 2026
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v13i02.24469

Abstract

This internship was conducted at PT. Sari Dumai Sejati, a company engaged in palm oil processing. The main focus of this internship is to analyze the thermal efficiency of the unit 1 system in the company's power plant department, where the steam turbine at PT. SDS has a capacity of 16 MW. PT. SDS is used to distribute electricity to all plants at PT. SDS. This study aims to determine the thermal efficiency of the unit 1 system on changes in load at PT. Sari Dumai Sejati. From the results of observations, it shows that the highest thermal efficiency of the system is 76.98% with a load of 9.49 MW, where the pump work is 370.70 kJ/kg, heat input is 3125.74 kJ/kg, turbine work is 2777.05 kJ/kg, heat output is 22.01 kJ/kg, net work is 2406.34 kJ/kg. Meanwhile, the lowest thermal efficiency is 75.90% with a load of 8.83 MW, where the pump work is 386.69 kJ/kg, the heat input is 3125.99 kJ/kg, the turbine work is 2759.31 kJ/kg, the heat output is 20 kJ/kg and the net work is 2372.62 kJ/kg. In conclusion, the PLTU at PT. SDS is working well but requires regular maintenance to ensure optimal efficiency.
Co-Authors Iwan Kurniawan