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

Nan Zhao; Bowen Li; Riaz Ahmad; Fan Ding; Yuguang Zhou; Gang Li; Ali Mohammed Ibrahim Zayan; Renjie Dong

Case Studies in Thermal Engineering (Dec 2021)

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

Nan Zhao,
Bowen Li,
Riaz Ahmad,
Fan Ding,
Yuguang Zhou,
Gang Li,
Ali Mohammed Ibrahim Zayan,
Renjie Dong

Affiliations

Nan Zhao: Bioenergy and Environment Science & Technology Laboratory, College of Engineering, China Agricultural University, Beijing, 100083, China; Key Laboratory of Clean Production and Utilization of Renewable Energy, Ministry of Agriculture and Rural Affairs, China, Beijing, 100083, China; National Center for International Research of BioEnergy Science and Technology, Ministry of Science and Technology, Beijing, 100083, China
Bowen Li: Bioenergy and Environment Science & Technology Laboratory, College of Engineering, China Agricultural University, Beijing, 100083, China; Key Laboratory of Clean Production and Utilization of Renewable Energy, Ministry of Agriculture and Rural Affairs, China, Beijing, 100083, China; National Center for International Research of BioEnergy Science and Technology, Ministry of Science and Technology, Beijing, 100083, China
Riaz Ahmad: Bioenergy and Environment Science & Technology Laboratory, College of Engineering, China Agricultural University, Beijing, 100083, China; Key Laboratory of Clean Production and Utilization of Renewable Energy, Ministry of Agriculture and Rural Affairs, China, Beijing, 100083, China; National Center for International Research of BioEnergy Science and Technology, Ministry of Science and Technology, Beijing, 100083, China
Fan Ding: Bioenergy and Environment Science & Technology Laboratory, College of Engineering, China Agricultural University, Beijing, 100083, China; Key Laboratory of Clean Production and Utilization of Renewable Energy, Ministry of Agriculture and Rural Affairs, China, Beijing, 100083, China; National Center for International Research of BioEnergy Science and Technology, Ministry of Science and Technology, Beijing, 100083, China
Yuguang Zhou: Bioenergy and Environment Science & Technology Laboratory, College of Engineering, China Agricultural University, Beijing, 100083, China; Key Laboratory of Clean Production and Utilization of Renewable Energy, Ministry of Agriculture and Rural Affairs, China, Beijing, 100083, China; National Center for International Research of BioEnergy Science and Technology, Ministry of Science and Technology, Beijing, 100083, China; Corresponding author. Bioenergy and Environment Science & Technology Laboratory, College of Engineering, China Agricultural University, Beijing, 100083, China.
Gang Li: School of Material Science and Mechanical Engineering, Beijing Technology and Business University, Beijing, 100048, China; Corresponding author.
Ali Mohammed Ibrahim Zayan: Department of Agricultural Engineering, Faculty of Agriculture, Omdurman Islamic University, Omdurman Province, Khartoum State, Sudan
Renjie Dong: Key Laboratory of Clean Production and Utilization of Renewable Energy, Ministry of Agriculture and Rural Affairs, China, Beijing, 100083, China; National Center for International Research of BioEnergy Science and Technology, Ministry of Science and Technology, Beijing, 100083, China; Yantai Institute, China Agricultural University, No. 2006 Binhai Zhonglu, Laishan District, Yantai, Shandong Province, 264670, China

Journal volume & issue: Vol. 28
p. 101484

Abstract

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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.

Published in Case Studies in Thermal Engineering

ISSN: 2214-157X (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Engineering (General). Civil engineering (General)
Website: http://www.journals.elsevier.com/case-studies-in-thermal-engineering/

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