Dynamic relationships between real-time fuel moisture content and combustion-emission-performance characteristics of wood pellets in a top-lit updraft cookstove

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作者：
Zhao, Nan [1 ,3 ,4 ]
Li, Bowen [1 ,3 ,4 ]
Ahmad, Riaz [1 ,3 ,4 ]
Ding, Fan [1 ,3 ,4 ]
Zhou, Yuguang [1 ,3 ,4 ]
Li, Gang [2 ]
Zayan, Ali Mohammed Ibrahim [5 ]
Dong, Renjie [3 ,4 ,6 ]
机构：
[1] Bioenergy and Environment Science & Technology Laboratory, College of Engineering, China Agricultural University, Beijing,100083, China
[2] School of Material Science and Mechanical Engineering, Beijing Technology and Business University, Beijing,100048, China
[3] Key Laboratory of Clean Production and Utilization of Renewable Energy, Ministry of Agriculture and Rural Affairs, China, Beijing,100083, China
[4] National Center for International Research of BioEnergy Science and Technology, Ministry of Science and Technology, Beijing,100083, China
[5] Department of Agricultural Engineering, Faculty of Agriculture, Omdurman Islamic University, Omdurman Province,Khartoum State, Sudan
[6] Yantai Institute, China Agricultural University, No. 2006 Binhai Zhonglu, Laishan District, Yantai,Shandong Province,264670, China
来源：
Case Studies in Thermal Engineering | 2021年 / 28卷
基金：
中国国家自然科学基金;
关键词：
Emission control - Fog - Moisture - Nitric oxide - Biomass - Fuels - Moisture determination - Pelletizing - Combustion;
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学科分类号：
摘要：
Fuel moisture content (FMC) has an essential impact on the performance of biomass combustion. FMC typically changes during the burning process; therefore, considering only the initial FMC is inadequate for understanding clean combustion and emission control. An on-line FMC monitoring method was employed by measuring relative humidity of emissions to determine the real-time effect of FMC on modified combustion efficiency (MCE) and emission factors (EFs) of pollutants from a typical top-lit updraft cookstove fueled with wood pellets. The results obtained from a complete 16-h combustion sequence showed an overall decreasing trend of FMC, consequently increasing combustion temperature and MCE. Flaming combustion appeared in a high-power phase where the EFs of carbon monoxide (CO) and fine particulate matter (PM2.5) decreased while real-time FMC decreased from 3.5% to 2.1% (wet basis). Smoldering combustion was generally dominant in a low-power phase where EFs of CO and nitric oxide (NO) decreased, while PM2.5 increased with real-time FMC decreasing from 6.3% to 4.9% (wet basis). This paper can provide meaningful information for modeling biomass burning, quantifying pollutant emissions and understanding related impacts on the residential sector. © 2021 The Authors
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  • [1] Dynamic relationships between real-time fuel moisture content and combustion-emission-performance characteristics of wood pellets in a top-lit updraft cookstove
    Zhao, Nan
    Li, Bowen
    Ahmad, Riaz
    Ding, Fan
    Zhou, Yuguang
    Li, Gang
    Zayan, Ali Mohammed Ibrahim
    Dong, Renjie
    CASE STUDIES IN THERMAL ENGINEERING, 2021, 28
1