Optimizing Municipal Heating Pipeline Confined Space Ventilation by Scale Model Test

DOI

10.2991/rac-18.2018.106How to use a DOI?

Keywords

confined space; scale model; test; ventilation effect; carbon dioxide.

Abstract

In order to provide effective guide for on-site ventilation of heating pipeline confined space and ensure safety of the workers, the influence of the vents position, the vents numbers, the ventilation air volume and the mixed ventilation on the ventilation effect are studied by scale model test. According to compare the recovery time of carbon dioxide, ventilation effect of each scheme is analyzed. The results show that carbon dioxide recovery time is shorter and the ventilation effect is better when air is pressured into through the middle vent and free outflow through vents at both ends, and when air is pressured into through vents at one end and pumped out through vent at the other end. When the ventilation volume and the vent position are determined, the excessive air vent number will not shorten the time required for the ventilation. The increase of ventilation air volume will reduce the recovery time of carbon dioxide to a certain extent, but there is no linear relationship between the two parameters. When the air volume increases to a certain value, reduction of ventilation time is very small.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yan Liu
AU  - Chunli Yang
AU  - Cong Tan
AU  - Dongliang Liu
PY  - 2018/10
DA  - 2018/10
TI  - Optimizing Municipal Heating Pipeline Confined Space Ventilation by Scale Model Test
BT  - Proceedings of the 8th Annual Meeting of Risk Analysis Council of China Association for Disaster Prevention (RAC 2018)
PB  - Atlantis Press
SP  - 672
EP  - 677
SN  - 2352-5428
UR  - https://doi.org/10.2991/rac-18.2018.106
DO  - 10.2991/rac-18.2018.106
ID  - Liu2018/10
ER  -