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

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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.

Analyzes operational performance in steam boilers, indicating implications for energy efficiency.

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Lee et al. (2026) studied this question.

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