Analisis Efisiensi Energi, Efisiensi Eksergi dan Laju Kerusakan Eksergi pada Komponen Utama PLTU Pra dan Pasca Overhaul

Dwiyanto, Agus (2025) Analisis Efisiensi Energi, Efisiensi Eksergi dan Laju Kerusakan Eksergi pada Komponen Utama PLTU Pra dan Pasca Overhaul. Undergraduate thesis, UPN Veteran Jawa Timur.

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Abstract

This study aims to analyze energy efficiency, exergy efficiency, and exergy loss rates in the main components of a steam power plant (PLTU) before and after overhaul. The focus of the research is on the boiler, turbines (HP, IP, and LP), condenser, condensate pump (CP), boiler feed pump turbine (BFPT), and deaerator. The research method involves collecting actual operational data from the PLTU Central Control Room (CCR) of the PLTU at various load levels (25%, 50%, 75%, and 100%). Pressure, temperature, and mass flow rate data were analyzed using the energy approach (based on the First Law of Thermodynamics) and exergy (based on the Second Law of Thermodynamics) to obtain energy efficiency, exergy efficiency, and exergy loss rate values. The results showed that all main components of the power plant experienced an increase in energy efficiency and exergy efficiency after overhaul, accompanied by a decrease in the exergy loss rate. The increase in efficiency was more significant at partial load (25–50%), while at full load the improvement was relatively smaller because the components operated close to their design point. The boiler and turbine were recorded as the components with the greatest energy and exergy losses. In conclusion, overhauling proved effective in restoring the thermodynamic performance of the main components of the coal-fired power plant, increasing energy conversion efficiency, and reducing irreversibility, there by supporting fuel savings and long-term operational reliability.

Item Type:

Thesis (Undergraduate)

Contributors: