气候变化领域集成服务门户(CCPortal): Impact of Flowfield on Pollutants’ Emission from a Swirl-Assisted Distributed Combustor

CCPortal

DOI	10.1007/978-981-15-5996-9_1
	Impact of Flowfield on Pollutants’ Emission from a Swirl-Assisted Distributed Combustor
	Feser J.S.; Karyeyen S.; Gupta A.K.
发表日期	2021
ISSN	21954356
起始页码	3
结束页码	11
英文摘要	Colorless distributed combustion (CDC) is a novel method to enhance flame stability and thermal field uniformity, increase combustion efficiency, and reduce pollutants’ emission. CDC is achieved through the use of a carefully prepared fuel–oxidizer mixture along with reactive species. In this study, a partially premixed, swirl-assisted cylindrical combustor utilized a propane–air flame with either nitrogen or carbon dioxide gas in order to reduce the oxygen concentration of the oxidizer. OH* chemiluminescence signatures were used to determine transition to distributed combustion condition. The results showed transition to CDC at approximately 15% using N2 and 17% using CO2 dilution. Emission of NO and CO under CDC condition showed NO levels of only 2 or 1 ppm using N2 or CO2 dilution, respectively. High-frequency PIV (3 kHz) was used to determine the flow velocity structure and eddy size effects on flame stability and emissions. Increase in dilution enhanced both the radial and axial mean and fluctuating velocities under CDC that foster mixing. Additionally, the Kolmogorov length decreased with increase in dilution resulting in smaller eddy size particularly in the swirl lobe region, which enhanced turbulent dissipation that resulted in lower peak temperatures and reduced thermal NOx emission. Reduced viscosity using CO2 dilution provided a stronger effect in reducing NO as compared to N2 as the diluent. © 2021, Springer Nature Singapore Pte Ltd.
来源期刊	Lecture Notes in Mechanical Engineering
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/177290
作者单位	Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, United States; Department of Energy Systems Engineering, Gazi University, Ankara, 06500, Turkey
推荐引用方式 GB/T 7714	Feser J.S.,Karyeyen S.,Gupta A.K.. Impact of Flowfield on Pollutants’ Emission from a Swirl-Assisted Distributed Combustor[J],2021.
APA	Feser J.S.,Karyeyen S.,&Gupta A.K..(2021).Impact of Flowfield on Pollutants’ Emission from a Swirl-Assisted Distributed Combustor.Lecture Notes in Mechanical Engineering.
MLA	Feser J.S.,et al."Impact of Flowfield on Pollutants’ Emission from a Swirl-Assisted Distributed Combustor".Lecture Notes in Mechanical Engineering (2021).