Experimental Study on the Ignition Process of Single Coal Particles at Microgravity
文献类型：期刊论文
| 作者 | Tang GT; Zhang H; Zhu MM; Yang HR; Yue GX; Wang SF(王双峰) ; Wan SX(万士昕)
|
| 刊名 | Microgravity Science and Technology
 |
| 出版日期 | 2010 |
| 卷号 | 22期号:1页码:27-35 |
| 通讯作者邮箱 | haizhang@tsinghua.edu.cn |
| ISSN号 | 0938-0108 |
| 通讯作者 | Zhang H |
| 合作状况 | 国内 |
| 中文摘要 | In this paper, the first Chinese microgravity (μ-g) experimental study on coal combustion was introduced. An experimental system used to study the ignition process of single coal particles was built up, complying with the requirements of the 3.5 s drop tower in the National Microgravity Laboratory of China (NMLC). High volatile bituminous and lignite coal particles with diameter of 1.5 and 2.0 mm were tested. The ignition and combustion process was recorded by a color CCD and the particle surface temperature before and at the ignition was determined by the RGB colorimetric method. Comparative experiments were conducted at normal gravity (1-g). The experiments revealed that at different gravity levels, the ignition of all tested coal particles commenced in homogeneous phase, while the shape, structure, brightness and development of the flames, as well as the volatile matter release during the ignition process are different. At μ-g, the part of volatile was released as a jet, while such a phenomenon was barely observed at 1-g. Also, after ignition, flames were more spherical, thicker, laminated and dimmer at μ-g. It was confirmed that ignition temperature decreased as the particle size or volatile content increased. However, contradicted to existing experimental results, provided other experimental conditions except gravity level were the same, ignition temperature of coal particles was about 50–80 K lower at μ-g than that at 1-g. |
| 类目[WOS] | Engineering, Aerospace ; Thermodynamics ; Mechanics |
| 研究领域[WOS] | Engineering ; Thermodynamics ; Mechanics |
| 关键词[WOS] | DEPENDENCE ; MECHANISM ; TEMPERATURE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000273789100004 |
| 公开日期 | 2010-07-19 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/34211]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 推荐引用方式 GB/T 7714 | Tang GT,Zhang H,Zhu MM,et al. Experimental Study on the Ignition Process of Single Coal Particles at Microgravity[J]. Microgravity Science and Technology,2010,22(1):27-35. |
| APA | Tang GT.,Zhang H.,Zhu MM.,Yang HR.,Yue GX.,...&万士昕.(2010).Experimental Study on the Ignition Process of Single Coal Particles at Microgravity.Microgravity Science and Technology,22(1),27-35. |
| MLA | Tang GT,et al."Experimental Study on the Ignition Process of Single Coal Particles at Microgravity".Microgravity Science and Technology 22.1(2010):27-35. |
入库方式： OAI收割
来源：力学研究所
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