Influence of Outlet Velocity of Air Curtain on Effectiveness of Dust-Isolating

Author

Liu Rong-hua ; Shi Shi-liang ; Li Xi-bin ; Wang Peng-fei

Author_Institution

Sch. of Energy & Safety Eng., Hunan Univ. of Sci. & Technol., Xiangtan, China

fYear

2010

fDate

18-20 June 2010

Firstpage

1

Lastpage

6

Abstract

The outlet air velocity of air curtain is one of the key factors which have effect on its dust-isolating efficiency. In this paper, the effect of the outlet air velocity of air curtain on dust isolation had been numerically investigated by using a CFD software, Fluent. A prototype of dust-isolating air curtain have been successfully applied in a full-mechanized working face of Gequan coal mine, Hebei Jinniu Energy & Resources Co, LTD. The air curtain prototype has been simulated with the conditions measured from the field. The variations of the flow field and the dust concentrations in two sides of air curtain with the outlet velocity of air curtain have been numerically analyzed for a given outlet width of air curtain. It is shown that the air curtain has the best dust-isolating efficiency when the outlet air velocity of air curtain is around 5 to 6m/s for an outlet width of 20mm and a air velocity of work face of 1m/s.

Keywords

coal; computational fluid dynamics; dust; environmental factors; mining industry; CFD software Fluent; Gequan coal mine; air curtain; dust concentration; dust isolation; flow field; outlet air velocity; Air safety; Computational fluid dynamics; Isolation technology; Numerical simulation; Power engineering and energy; Product safety; Protection; Prototypes; Software prototyping; Virtual prototyping;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on

Conference_Location

Chengdu

ISSN

2151-7614

Print_ISBN

978-1-4244-4712-1

Electronic_ISBN

2151-7614

Type

conf

DOI

10.1109/ICBBE.2010.5516578

Filename

5516578