Mechanism modeling of optimal excess air coefficient for operating in coal fired boiler

Yanhong Wang, Xiaoyu Li, Tianqin Mao, Pengfei Hu, Xingcan Li and GuanWang,

Energy, 2022, vol. 261, issue PA

Abstract: Optimization of excess air coefficient is extremely significant for boiler operating performance. Currently theoretical modeling of optimal excess air coefficient is still an intractable technical issue for pulverized coal boiler, limits further efficient utilization of coal. In this work, a mechanistic optimization model considering influence mechanisms was developed to model optimal excess air coefficient under partial boiler loads. To investigate efficiency of analyzed steam boiler, indirect method and individual boiler losses computation was applied. The accuracy of model results was verified at three different partial loads. Subsequently, modeling approach is used for a case study on 660 MW boiler. Influence mechanism between excess air coefficient and boiler operating parameters was graphically analyzed and meticulously discussed. Optimum energy efficiency and exergy efficiency of boiler were determined and given accurately.

Keywords: Mechanism modeling; Optimum excess air coefficient; Boiler efficiency; Performance analysis (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:261:y:2022:i:pa:s0360544222020229

DOI: 10.1016/j.energy.2022.125128

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