Simulation-Based Analysis of Steam Boiler Operational Performance and Load Response Characteristics According to Turn Down Ratio under an Energy Commissioning Framework

Key Points

• This study aims to analyze the impact of turn down ratio on the efficiency and emissions of LNG combustion steam boilers.
• Used AMESim simulation to evaluate boiler performance under varying load conditions.
• Assessed efficiency and CO₂ emissions for different turn down ratios during load tracking operations.
• Compared the effects of load distribution strategies between master-slave control and equal load operations.
• Single boiler efficiency peaked at mid-load (40-70%), whereas full capacity showed decreased efficiency due to gas residence time.
• At low loads (10-30%), fixed thermal losses significantly reduced efficiency.
• Parallel operation of two boilers highlighted that equal load distribution was more efficient and emitted less CO₂ than master-priority operation.

Abstract