A study on the improvement of the air exhaust system at the PSD installed subway station

Kwon, Soon-Bark; Song, Jiongjiong; Ryu, Ju-Hwan; Jo, Seung-Won; Oh, Tae-Suk; Bae, Sung-Joon; Kim, Hyo-Gyu

doi:10.9711/ktaj.2015.17.3.353

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…우리나라의 지하철은 서울역에서 청량리에 이르는 1호 선(1974년)이 개통된 이후로 끊임없이 성장하여 현재는 6 개 도시(27개 노선)에, 약 830여개 역사가 설계되어져 하루 에 약 1600만명이 이용하고 있다. 지하철 중에 이용도가 가 장 높은 수도권의 1, 2, 3, 4호선은 '서울메트로'에서 운영 하고 있으며, 대부분 1980～90년대 설계되었기 때문에 전 동차 및 설비가 노후화 되었다 (Kwon, 2015).…”

Section: 서 론unclassified

Experimental Study for the Performance Evaluation of the Subway Station Ventilation System in Fires

Park¹,

Yoo²,

Park³

et al. 2016

ksmer

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In this study, the stations on Seoul Metro line were categorized into 4 grades as a result of performing the smoke control safety evaluation that considered the conditions of platform air conditioning and exhaust system and mainline exhaust system in a bid to ensure the evacuation safety on platform and evacuation route to outside will be granted in a way of enhancing the efficiency of smoke control and exhaust system at subway stations. 4 stations were designated considering the safety evaluation grade and operation type of smoke control & exhaust system and then T.A.B was conducted. Consequently, the performance of existing smoke control & exhaust system appeared to have been far deteriorated from the design capacity.

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Section: 서 론unclassified

Experimental Study for the Performance Evaluation of the Subway Station Ventilation System in Fires

Park¹,

Yoo²,

Park³

et al. 2016

ksmer

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show abstract

“…For example, an exhaust system was installed in the space under the stairs that led to the platform and waiting room. Consequently, the ventilation efficiency was improved by 16.5% [ 11 ]. Many studies were conducted to reduce toxic materials, such as CO 2 , TVOCs, and VOCs, in addition to studies on the reduction of the PM concentration in subway cabins, tunnels, and underground stations and on platforms.…”

Section: Introductionmentioning

confidence: 99%

Study on the Ventilation Method to Maintain the PM10 Concentration in a Subway Cabin below 35 μg/m3

Choi

Yook

Kim

et al. 2022

Toxics

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The city of Seoul will limit the maximum particulate matter (PM10) concentration to ≤35 μg/m3 (from 2024). Herein, a numerical parametric study was conducted on the PM removal efficiency of the heating, ventilation, and air conditioning (HVAC) filters installed in the ceiling of subway cabins. The PM10 concentration distribution was explored according to the flow rate and flow rate ratio of the air introduced into the cabin. Under the current ventilation conditions of the subway train HVAC system, the PM10 concentration was highest in the cabin central area where exhaust outlets are located and decreased toward both ends of the cabin. The indoor airflow was improved and the PM10 concentration was reduced by increasing the flow rate of the supplied air at both ends of the cabin while decreasing it in the central area. It was found that the strengthened PM10 concentration criterion of Seoul can be met by increasing the ventilation flow rate to 700 CMH (currently, 500 CMH) and the filter efficiency to 85% (currently, 70%) while maintaining the current flow rate ratio. These results are expected to be used as important reference data for reducing the PM concentration in subway cabins and thereby improving indoor air quality.

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“…Jang et al [7,8] conducted a basic study on the characteristics of fire propagation due to the presence of the PSD in case of urban railway fire and the validity of the operation mode of the platform ventilation system at deep underground subway station in case of platform fire. Kwon et al [9] performed a numerical analysis to improve ventilation efficiency by installing an exhaust fan in the lower space of the staircase and thus to solve the problem of deterioration of the ventilation efficiency in the station by removing the influence of the train-induced wind due to the installation of the PSD. Hu et al [10] analyzed the most effective ventilation mode when a fire occurs on a train between the underground subway platforms by using CFD.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Heat and Smoke Flow according to Platform Screen Door and Fan Conditions on Fire in Underground Platform

Jung

Kang

Yoon

et al. 2018

Advances in Civil Engineering

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In this study, a three-dimensional flow analysis of underground subway station was conducted by applying ventilation mode in operation and platform screen door (PSD) opening and closing conditions on fire in underground platform. In order to analyze optimal smoke control and heat removal conditions, the whole underground subway station was set as a model, and a total of eight cases were analyzed by changing the operating conditions of fans for each area under the opening and closing conditions of the PSDs. e analysis results confirmed that the operation mode of supply fan in platform E and I areas located at the third floor underground is more effective than that of exhaust fan in the event of a fire in underground subway station when the PSD is closed. e amount of CO entering a waiting room increased, and the overall CO distribution in the underground subway station was also increased when the PSD is opened. In addition, the CO distributions due to the opening and closing of the PSD were similar to one another when a fire occurred on the platform, which suggests that the operating conditions of the fan affects the formation of CO distribution in the underground subway station rather than the discharge of CO.

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A study on the improvement of the air exhaust system at the PSD installed subway station

Cited by 4 publications

References 7 publications

Experimental Study for the Performance Evaluation of the Subway Station Ventilation System in Fires

Experimental Study for the Performance Evaluation of the Subway Station Ventilation System in Fires

Study on the Ventilation Method to Maintain the PM10 Concentration in a Subway Cabin below 35 μg/m3

Analysis of Heat and Smoke Flow according to Platform Screen Door and Fan Conditions on Fire in Underground Platform

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