我们的网站为什么显示成这样?

可能因为您的浏览器不支持样式,您可以更新您的浏览器到最新版本,以获取对此功能的支持,访问下面的网站,获取关于浏览器的信息:

|Table of Contents|

微米木纤维纹孔对超微粒子稳态捕集效率的模拟(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2014年03期
Page:
98-102
Column:
研究论文
publishdate:
2014-05-15

Article Info:/Info

Title:
Simulation of steady collection efficiency of micron wood fiber pits on ultrafine particles
Article ID:
1000-2006(2014)03-0098-05
Author(s):
GUO Xiurong WANG Peng
College of Mechanical and Electronic Engineering, Northeast Forestry University, Harbin 150040, China
Keywords:
micron wood fiber heat treatment ultrafine particle steady collection efficiency diesel vehicle PM2.5
Classification number :
TK421+.5
DOI:
10.3969/j.issn.1000-2006.2014.03.019
Document Code:
A
Abstract:
Micron wood fiber pits have a strong adsorption to ultrafine particles exhausted from diesel vehicles with the kinetic diameter ranging from 0.01 μm to 1 μm, which can effectively reduce emissions of diesel vehicles PM2.5. Making use of equations of particle concentration as well as the fiber collection theory, collection media around the pits were supposed into cylinders, and numerical analysis was carried out on the steady collection efficiency of micron wood fiber pits. The results show that micron wood fibers have a low collection efficiency to particles with the diameter from 0.4 μm to 0.6 μm, while they have a much higher collection efficiency to those particles in other sizes; among those particles with the diameter of 0.01 μm the collection efficiency of micron wood fibers can reach up to 90%, who plays a significant role on collecting ultrafine particles of diesel vehicles.Among all the factors on collection efficiency, reduction of surface seepage velocity and increase of the tracheid wall thickness would help improving the filtration efficiency, while the exhaust gas temperature has little effect on collection efficiency, which can totally be ignored.

References

[1] 杨小阳,白志鹏.雾霜天气的成因及其法律层面应对状况与操作层面政策建议[J].中国能源,2013,35(4):6-10.Yang X Y, Bai Z P. Causes of fog and frost weather conditions to deal with the legal aspects of the operational level policy recommendations[J].Energy of China,2013,35(4):6-10..
[2] 吴憩棠. PM2.5和汽车排放标准[J]. 汽车与配件,2011,52(12): 18-19.Wu Q T. PM2.5 and vehicle emission standards[J]. Automobile & Parts, 2011,52(12):18-19.
[3] 豆立新,沈健,李永丹,等. 柴油车排放的碳颗粒物微结构和化学分析[J]. 车用发动机,2007(2):65-68.Dou L X,Shen J,Li Y D,et al. Research on microstructure and chemical properties of diesel soot[J]. Vehicle Engine, 2007(2):65-68.
[4] 靳芳亮,宋二潭. 雾霾的成因、危害和防护[J].河南科技, 2013,18(9):177.Jin F L,Song E T. Causes,harm and protection of haze[J]. Journal of Henan Science and Technology, 2013,18(9):177.
[5] 钱孝琳,阚海东,宋伟民.大气细颗粒物污染与居民每日死亡关系的 Meta 分析[J].环境与健康杂志,2005, 22(4): 246-248.Qian X L,Han H D,Song W M. Meta-analysis of assoication between air fine particulate matter and daily mortality[J]. Journal of Environment and Health, 2005,22(4): 246-248.
[6] 渡部 阳,南 利贵. 日本柴油机排放技术的进展[J]. 汽车安全与节能学报,2013,4(3):185-201.Akira WATANABE, Toshitaka MINAMI. Diesel emission technology development in Japan[J]. Journal of Automotive Safety and Energy, 2013,4(3):185-201.
[7] 邓邵平,杨文斌,饶久平,等. 热处理对人工林杉木尺寸稳定性的影响[J].中国农学通报,2009,25(7):103-108.Deng S P,Yang W B,Rao J P, et al. Effects of the heating treatment on the dimensional stability of Chinese fir wood from plantation[J]. Chinese Agricultural Science Bulletin, 2009,25(7):103-108.
[8] 杨冬霞,马岩,杨春梅. 针叶树材细胞破壁力的理论计算[J].南京林业大学学报:自然科学版,2013,37(3):97-102.Yang D X, Ma Y, Yang C M. Theoretical calculation of coniferous wood cell wall[J].Journal of Nanjing Forestry University:Natural Sciences Edition, 2013,37(3):97-102.
[9] 刘一星,赵广杰. 木质资源材料学[M]. 北京:中国林业出版社,2003.
[10] Bissett E J. Mathematical model of the thermal regeneration of a wall-flow monolith diesel particulate filter [J]. Chemical Engineering Science,1984,39(7):1233-1244.
[11] 刘云卿. 壁流式柴油机微粒捕集器捕集及微波再生机理研究[D]. 长沙:湖南大学,2009.Liu Y Q. Mechanisms study on filtration and microwave regeneration of wall-flow diesel particulate filter[D]. Changsha: Hunan University, 2009
[12] Ober E F. Internal combustion engines and air pollution[J]. Automotive Engineering,1971,43:367-375.
[13] 孔祥言. 高等渗流力学[M]. 合肥:中国科技大学出版社,1999.
[14] 宁智,宋波,资新运,等. 柴油机排气微粒壁流式陶瓷过滤体过滤机理及影响[J]. 北京交通大学学报, 2005,29(4):69-73.Ning Z,Song B,Zi X Y,et al. Study on the trap mechanisms and effect factors of the diesel ceramic wall flow filter[J].Journal of Beijing Jiaotong University, 2005,29(4):69-73.
[15] Masoudi M,Konstandopoulos A,Nikitidis M S,et al. Validation of a model and development of a simulator for predicting the pressure drop of diesel particulate filters[R].Detroit:SAE World Congress, 2001.
[16] Biswas Pratim, Richard C Flagan. The particle trap impactor[J]. Journal of Aerosol Science,1988,19(1):113-121.
[17] 周崟. 中国落叶松属木材[M].北京:中国林业出版社,2001.
[18] 杨冬霞,马岩,杨春梅. 针叶材在超细粉碎过程中细胞壁断裂的理论计算[J].西部林业科学,2012,41(3):42-47.Yang D X, Ma Y, Yang C M. Theoretical calculation of cell wall fracture of coniferous timber[J]. Journal of West China Forestry Science. 2012,41(3):42-47.
[19] 方文彬,吴义强. 针叶树材组织率的分析[J].东北林业大学学报,2007,35(2):12-14.Fang W B, Wu Y Q. Tissue tatio of conifer wood[J].Journal of Northeast Forestry University, 2007,35(2):12-14.

Last Update: 2014-05-15