How domes improve fire safety in subway stations

Gao, Ran; Li, Angui; Zhang, Ying; Luo, Na

doi:10.1016/j.ssci.2015.07.015

Cited by 30 publications

(9 citation statements)

References 31 publications

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“…We carried out a field test to measure the air temperature, wall surface temperature and window surface temperature, used the given heat transfer performances of the envelops as the boundary conditions to do the simulation and compared the results of the field and the simulation to validate the numerical model. [11]. In this study, turbulence was solved using LES.…”

Section: Numerical Model Validationmentioning

confidence: 99%

Cold windows induced airflow effects on the thermal environment for a large single-zone building

et al. 2020

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With access to modern building technologies and HVAC-systems, it is possible to obtain low energy use and good thermal comfort for complex design, such as large building volumes. However, the situation is different for large single zone buildings with large volumes. They often have insufficient thermal comfort. The problem could be partially attributed to the unwanted airflows due to the cold surfaces, especially the windows. With increased knowledge of the airflow, it is possible to identify suitable renovation strategies in such buildings. In this work, we study a church building with mechanical air change system and floor heating. CFD-simulations with dynamic airflow was conducted based on building geometries and technical data. The validation was based on data from the ventilation control and the space-heating system. The results show how the window-to-wall ratios and the positions of windows affect the thermal comfort. It contributes with knowledge of advantages and disadvantages of different envelope design in the existing environment with floor heating.

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Section: Numerical Model Validationmentioning

confidence: 99%

Cold windows induced airflow effects on the thermal environment for a large single-zone building

et al. 2020

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“…With 3 m × 3 m or larger roof window in atrium ceiling, hybrid ventilation is an effective method to exhaust fireinduced smoke. The confluence, storage, and suppression effects of domes on fire-induced smoke control in subway stations were also investigated [20]. Preliminary results suggest that CO concentration in the hall of a subway station is significant lower when the fire source is located under the dome.…”

Section: Smoke Control and Exhaustmentioning

confidence: 99%

Ventilation and environmental control of underground spaces: a short review

Kosonen

Melikov

et al. 2019

E3S Web Conf.

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More and more underground spaces were used in 21st century because of rapid urbanization, traffic problems, etc. Underground city, metro, tunnel, mine, industrial and agriculture engineering, civil air defence engineering need large underground spaces. Underground spaces with different thermal, ventilation and lighting environments may cause comfort, health and safety problems. Concrete problems include excessive humidity, heat transfer specialty, excessive CO caused by blockage in long distance traffic tunnels, difficulty in smoke exhaust and evacuation during fire, harmful microorganism, radioactivity pollutants, psychological problems, and so forth. Air quality control technologies for underground spaces, including ventilation technology, dehumidification technology, natural energy utilization technology, smoke extraction technology and ventilation resistance reduction technology, will be reviewed. Ventilation for smoke-proof/evacuation and ventilation will also be reviewed.

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“…Metro dead ends are a complex object/system, both in terms of construction and technical issues [8][9][10][11]. In the field of fire fighting, there are a sufficient number of legal acts regulating the requirements for design, installation and operation [12].…”

Section: Introductionmentioning

confidence: 99%

Design of Water Fire Extinguishing System for Protection of Metro Rolling Stock Stagnation Zones

Filippov¹,

Yusupdzhanov²,

Zybina³

et al. 2021

EPJ Web Conf.

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Metro rolling stock stagnation zones are quite long. This causes a number of difficulties in choosing and designing a water fire extinguishing system, as it directly affects the pressure loss in pipelines when water is supplied over such a long distance. That is why the task of this work is to design two different types of water fire extinguishing for metro dead ends and to perform hydraulic calculations, based on the results of which to choose the most suitable system for the object under study. The choice of a fire extinguishing system to ensure fire safety of dead ends of rolling stock sludge is made in the favor of the fire extinguishing system with high-pressure water spray.

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How domes improve fire safety in subway stations

Cited by 30 publications

References 31 publications

Cold windows induced airflow effects on the thermal environment for a large single-zone building

Cold windows induced airflow effects on the thermal environment for a large single-zone building

Ventilation and environmental control of underground spaces: a short review

Design of Water Fire Extinguishing System for Protection of Metro Rolling Stock Stagnation Zones

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