Local Exhaust Ventilation Characteristics of Limestone Dust by Model Experiments and Numerical Simulation

doi:10.32390/ksmer.2013.50.5.660

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2013 Vol.50, Issue 5 Preview Page Next Page

Research Paper

Local Exhaust Ventilation Characteristics of Limestone Dust by Model Experiments and Numerical Simulation 모형실험과 수치해석을 통한 석회석 분진의 국소배기 특성: 이승철·옥윤용·유성곤
Seung-Chul Lee, Yun-Yong Ok and Sung-Gon Yoo

October 2013. pp. 660-666

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Abstract

In this study, experiments were carried out about the performance of dust-collecting hood by a model device. The target is canopy hood collecting dust at a turning point of the conveyor belt to move limestone in a local exhaust system. With three variables of control distance, control ventilation velocity and rubber curtains status, experiments were carried out about dust collection characteristics and flow properties. As a result, the most important variable of the dust collection efficiency in the local exhaust system is the presence of the rubber curtain. When confirming the collected dust size in 0.5 m/s(control ventilation velocity) and 0.3 m(control distance), many particles over 20 ㎛ were collected because control distance is short. They will drop the whole work efficiency. Three-dimensional numerical simulation was carried out under the same conditions with experiments. The flow characteristics between the simulation and the experiments were similar overall.

Keywords

Local exhaust ventilation

Limestone dust

Computational fluid dynamics

본 연구에서는 석회석을 이동시키는 벨트컨베이어 전환점에서 발생되는 분진을 포집하기 위해 캐노피후드를 설치한 국소배기 시스템을 대상으로 모형장치를 제작하여 후드 포집성능 실험을 수행하였다. 3가지 변수인 제어거리, 제어풍속 및 고무커튼의 유･무를 변화시키며 포집특성과 유동특성실험을 수행하였다. 실험결과로국소배기시스템의 포집효율에 가장 큰 영향을 미치는 것은 고무 커튼의 사용유무인 것으로 나타났다. 포집된 입자크기 확인 결과, 제어속도 0.5 m/s이고 제어거리 0.3 m일 때, 짧은 제어거리로 인해 20 ㎛ 이상의 입자가 상당수 포집되었고 이것은 전체적인 작업효율을 떨어뜨리게 된다. 실험과 동일조건에서 3차원 수치해석을 수행하였으며 그 결과 전반적으로 유동특성이 유사하였다.

키워드

국소배기

석회석 분진

전산유체역학

References

Computational Dynamics Ltd., 2008, STAR-CCM+ Version 4.02 User Manual, Computational Dynamics Ltd., New York, U.S.A.
Jeong, Y.T., Kim, J.O., Jo, Y.C., Jeong, M.S., Park, Y.K., Lee, C.Y., Jeong, J.D. and Choi, S.B., 2011, Introduction of air pollution, 1st Ed., Shinkwang, Seoul, Korea, p. 284.
Kim, D.Y., Lee, S.H., Jeong, K.H. and Lee, C.W., 2012, “Size Analysis of Airborne and Settled Dust in Underground Limestone Mine,” J. of the Korean Society of Mineral and Energy Resources Engineers, Vol. 49, No. 4, pp. 471-478.
Kim, Y.S. and Oh, Y.K., 2008, “A Study on Improvement of Industrial Hood in Ventilation System for Elimination of Harmful Material and Dust,” Society of Air-conditioning and Refrigerating Engineers of Korea, Vol. 20, No. 4, pp. 238-244.
Launder, B.E. and Spalding, D.B., 1974, “The numerical Computation of Turbulent Flows,” Computer Methods in Applied Mechanics and Engineering, Vol. 3, pp. 269-289.
Lee, S.C., Kim, S.C., Noh, K.C. and Park, M.H., 2009, “Control of Suspended Dust in Various Ventilation Systems of Cement Packaging Process,” Korea Academia Industrial Cooperation Society, Vol. 10, No. 3, pp. 463-469.
Lee, S.K., Kim, B.Y., Cho, Y.D. and Kim, I.H., 1999, “Dust Fall Property of Open Cut Limestone Mine,” J. of the Korean Society of Mineral and Energy Resources Engineers, Vol. 36, pp. 113-118.
MIRECO., 2009, Blowout prevention equipment standardization and high efficiency of dust, MIRECO, Seoul, Korea.
Patankar, S.V., 1980, Numerical Heat Transfer and Fluid Flow, Hemisphere, Washington, DC.
Yi, S.C., Jang, S.C. and Yoon, K.R., 2007, “A Numerical Analysis on Improvement of Push-Pull Local Ventilation System,” Proceeding of the SAREK Winter Annual Conference, Society of Air-conditioning and Refrigerating Engineers of Korea, Seoul, November 27, pp. 594-599.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 50
No :5
Pages :660-666
DOI :https://doi.org/10.32390/ksmer.2013.50.5.660

[1] Computational Dynamics Ltd., 2008, STAR-CCM+ Version 4.02 User Manual, Computational Dynamics Ltd., New York, U.S.A.

[2] Jeong, Y.T., Kim, J.O., Jo, Y.C., Jeong, M.S., Park, Y.K., Lee, C.Y., Jeong, J.D. and Choi, S.B., 2011, Introduction of air pollution, 1st Ed., Shinkwang, Seoul, Korea, p. 284.

[3] Kim, D.Y., Lee, S.H., Jeong, K.H. and Lee, C.W., 2012, “Size Analysis of Airborne and Settled Dust in Underground Limestone Mine,” J. of the Korean Society of Mineral and Energy Resources Engineers, Vol. 49, No. 4, pp. 471-478.

[4] Kim, Y.S. and Oh, Y.K., 2008, “A Study on Improvement of Industrial Hood in Ventilation System for Elimination of Harmful Material and Dust,” Society of Air-conditioning and Refrigerating Engineers of Korea, Vol. 20, No. 4, pp. 238-244.

[5] Launder, B.E. and Spalding, D.B., 1974, “The numerical Computation of Turbulent Flows,” Computer Methods in Applied Mechanics and Engineering, Vol. 3, pp. 269-289.

[6] Lee, S.C., Kim, S.C., Noh, K.C. and Park, M.H., 2009, “Control of Suspended Dust in Various Ventilation Systems of Cement Packaging Process,” Korea Academia Industrial Cooperation Society, Vol. 10, No. 3, pp. 463-469.

[7] Lee, S.K., Kim, B.Y., Cho, Y.D. and Kim, I.H., 1999, “Dust Fall Property of Open Cut Limestone Mine,” J. of the Korean Society of Mineral and Energy Resources Engineers, Vol. 36, pp. 113-118.

[8] MIRECO., 2009, Blowout prevention equipment standardization and high efficiency of dust, MIRECO, Seoul, Korea.

[9] Patankar, S.V., 1980, Numerical Heat Transfer and Fluid Flow, Hemisphere, Washington, DC.

[10] Yi, S.C., Jang, S.C. and Yoon, K.R., 2007, “A Numerical Analysis on Improvement of Push-Pull Local Ventilation System,” Proceeding of the SAREK Winter Annual Conference, Society of Air-conditioning and Refrigerating Engineers of Korea, Seoul, November 27, pp. 594-599.

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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