Browse > Article
http://dx.doi.org/10.7782/JKSR.2014.17.5.328

Analysis of Cooling Air Current and Efficiency of Air Conditioning in the Underground Subway Station with Screen-Door Opening and Closing  

Jang, Yong-Jun (Korea Railroad Research Institute, Railroad Safety and Certification Center)
Ryu, Ji-Min (Korea Railroad Research Institute, Railroad Safety and Certification Center)
Jung, Ho-Sung (Korea Railroad Research Institute, Smart Station Research team)
Publication Information
Journal of the Korean Society for Railway / v.17, no.5, 2014 , pp. 328-335 More about this Journal
Abstract
Numerical prediction methods were applied to investigate the turbulent air currents and air-conditioning efficiency in an underground subway station, and the results compared to experimental data. The Shin-gumho Station($8^{th}$ floor underground and 43.6m in depth) in Seoul was selected for the analysis. The entire station was covered for simulation and the ventilation mode was ordinary. The ventilation diffusers were modeled as 95 square shapes of $0.6m{\times}0.6m$ in the lobby and as 222 square shapes in the platform. Cooling air of $47,316m^3/h$ was supplied and the returned air of $33,980m^3/h$ is exhausted in the lobby and the cooling air of $33,968m^3/h$ is supplied and the returned air of $76,190m^3/h$ was exhausted in the platform which is the same as the experimental data. The cases of the screen-door-closed and open were respectively investigated. A total of 7.5million grids were generated and the whole domain divided into 22 blocks for MPI efficiency of calculation. Large eddy simulation (LES) was applied to solve the momentum and energy equation.
Keywords
Subway; Air conditioner; Large eddy simulation(LES); Multi-block; Message passing interface(MPI);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Y.J. Jang, H.S. Lee, D.S. Park (2012) Experimental Study for the Capacity of Ordinary and Emergency Ventilation System in Deeply Underground Subway Station, Journal of The Korean Society for Railway, 15(6) pp. 579-587.   과학기술학회마을   DOI   ScienceOn
2 K.B. Mcgrattan, B. Klein, S. Hostikka, J. Floyd (2010) Fire Dynamics Simulator(Version 5) User's Guide, NIST Special Publication 1019-5.
3 K.B. Mcgrattan, H.R. Baum, R.G. Rehm (1998) Large eddy simulation of smoke movement, Fire Safety Journal 30(2), pp. 161-178.   DOI   ScienceOn
4 J. Smagorinsky (1963) General Circulation Experiments with the Primitive Equation, I, the basic experiment, Monthly Weather Review, 91(3) 99-164.   DOI
5 H. Werner, H. Wengle (1991) Large-eddy simulation of turbulent flow over and around a cube in a plate channel, 8th Symposium on Turbulent Shear Flows, pp. 155-168.
6 Y.J. Jang (2009) The Study of Renewable Energy for Application to The Railway System, KRRI- STUDY 2009-G-04- 01(Korea Railroad Research Institute).
7 I. Kim, H.N. Kim, J.S. Park (2013) Analysis of factors to affect the amount of power consumption on Seoul subway Line 9, 2013 Spring Conference & Annual Meeting of the Korean Society for Railway, pp. 1-6.
8 B.W. Han, Y.M. Kim, J.H. Hong (2010) Effect of Traininduced Wind on Tunnel Ventilation in a Subway Tunnel, Proceeding of the 50th Meeting of KOSAE(2010) Korean Society for Atmospheric Environment.
9 S.J. Bae, S. H. Hwang, C.H. Shin (2009) A Study of air quality and cooling efficiency improvement by PSD installation, 2009 Autumn Conference & Annual Meeting of the Korean Society for Railway, pp. 1-7.
10 H.J. Gerhardt, O. Kruger (1998) Wind and train driven air movements in train stations, Journal of Wind Engineering Industrial Aerodynamics, 74-76 pp. 589-597.   DOI   ScienceOn
11 J.Y. Kim (2010) Development of Optimum Design Technology of Platform Screen Door Systems for the Environment Improvement and Disaster Prevention of Urban Railway, Proceeding of 2008 Winter Conference & Annual Meeting of the Society of Air-conditioning and Refrigerating Engineers of Korea, pp. 84-87.
12 M. Juraeva, J.R. Kyung, S.H. Jeong (2013) Influence of mechanical ventilation-shaft connecting location on subway tunnel ventilation performance, Journal of Wind Engineering Industrial Aerodynamics, 119 pp. 114-120.   DOI
13 J.Y. Kim, K.Y Kim (2009) Effects of vent shaft location on the ventilation performance in a subway tunnel, Journal of Wind Engineering Industrial Aerodynamics, 97, pp. 174-179.   DOI   ScienceOn
14 J. Ji, J.Y. Han, C.G. Fan, Z.H. Gao, J.H. Sun (2013) Influence of cross-sectional area and aspect ratio of shaft on natural ventilation in urban road tunnel, International Journal of Heat and Mass Transfer, 67 pp. 420-431.   DOI
15 C.G. Fan, J. Ji, W. Wang, J.H. Sun (2014) Effects of vertical shaft arrangement on natural ventilation performance during tunnel fires, International Journal of Heat and Mass Transfer, 73 pp. 158-169.   DOI