Next Article in Journal
Influence of Trans-Boundary Air Pollution on the Urban Atmosphere in Fukuoka, Japan
Previous Article in Journal
Seasonal Variations and Correlation Analysis of Water-Soluble Inorganic Ions in PM2.5 in Wuhan, 2013
Article Menu

Export Article

Open AccessArticle
Atmosphere 2016, 7(4), 50; doi:10.3390/atmos7040050

Effect of Additional Structure on Effective Stack Height of Gas Dispersion in Atmosphere

1,2,†,* , 3,†
and
4,†
1
Environmental Science Research Laboratory, Central Research Industry of Electric Power Industry, 1646 Abiko, Abiko-shi, Chiba-ken 270-1194, Japan
2
Department of Mechanical Engineering, Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashiosaka, Osaka 577-8502, Japan
3
Nuclear Risk Research Center, Central Research Industry of Electric Power Industry, 1646 Abiko, Abiko-shi, Chiba-ken 270-1194, Japan
4
Fluid Dynamics Research Department, Research & Innovation Center, Technology & Innovation Headquarters, Mitsubishi Heavy Industries, Ltd., 5-717-1 Fukahori-machi, Nagasaki 851-0392, Japan
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Robert W. Talbot
Received: 9 February 2016 / Revised: 14 March 2016 / Accepted: 18 March 2016 / Published: 24 March 2016
View Full-Text   |   Download PDF [4309 KB, uploaded 24 March 2016]   |  

Abstract

Wind-tunnel experiments were conducted to evaluate the effect of additional structure (building, sea wall and banking) on the effective stack height, which is usually used in safety analyses of nuclear power facilities in Japan. The effective stack heights were estimated with and without the additional structure in addition to the reactor building while varying several conditions such as the source height, the height of additional structure and the distance between the source position and the additional structure. When the source height is equivalent to the reactor building height, the additional structure enhances both the vertical and horizontal gas dispersion widths and decreases the ground gas concentration, and it means that the additional structure does not decrease the effective stack height. When the source height is larger than the reactor height, the additional structures might affect the effective stack height. As the distance between the source and the additional structure decreases, or as the height of the additional structure increases, the structure has a larger effect on the effective stack height. View Full-Text
Keywords: wind-tunnel experiment; effective stack height; gas dispersion wind-tunnel experiment; effective stack height; gas dispersion
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Michioka, T.; Sada, K.; Okabayashi, K. Effect of Additional Structure on Effective Stack Height of Gas Dispersion in Atmosphere. Atmosphere 2016, 7, 50.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Atmosphere EISSN 2073-4433 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top