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권순박(Soon-Bark Kwon),김세영(Se-Young Kim),김명준(Myungjoon Kim),강중구(Joong-Goo Kang),신창헌(Chang-Heon Shin),김태성(Taesung Kim) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.11
Particulate matter (PM) is one of the major indoor air pollutants especially in the subway station in Korea. In order to remove PM in the subway station, several kinds of PM removal system such as roll-filter, auto-washable air filter, demister, and electrostatic precipitator are used in the air handling unit (AHU) of subway station. However, those systems are faced to operation and maintenance problems since the filter-regeneration unit consisting of electrical or water jet parts is malfunctioned due to the high load of particulates and the filter material needs periodic replacement. In this study, we presented the novel air filtration system utilizing cyclone panels for removing PM in AHU. The system was designed based on numerical simulation test in terms of particle collection efficiency and pressure drop. The mock-up model was manufactured for experimental test and the results showed good feasibility.
권순박(Kwon Soon-Bark),조영민(Cho Youngmin),박덕신(Park Duck-Shin),김세영(Kim Se-Young),박재형(Park Jaehyung),조관현(Cho Goan-Hyun),유건종(Yoo Gun-Jong),김정수(Kim Jung-Su) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
Management of indoor air quality of underground subway station is an important issue since the limited natural ventilation, limited sunshine incoming, and highly moistured atmosphere. The improvement in IAQ of platform is expected because most stations were installed with platform screen door currently, however, the poor air quality in tunnel might be affecting subway cabin indoor. In this study, we developed the air quality assessment model based on computational fluid dynamics. The geometry of air ventilation unit, seat, LCD monitors, and passengers were modeled using commercial software (Design Modeler) and fluid pattern and pollutants trajectories were analyzed by using CFX. We predicted the thermal comfort by predicted mean vote (PMV), distribution of CO2 and PM10 concentration. It is expected that this model can be used for the performance test of air cleaners which are under development.
권순박(Soon Bark Kwon),조영민(Youngmin Cho),박덕신(Duck-Shin Park),박은영(Eun Young Park) 한국대기환경학회 2008 한국대기환경학회지 Vol.24 No.2
The guidelines for indoor air quality of public transportations such as subway, train and bus was presented by Korean Ministry of Environment last end of year 2006 based on the great consequence of indoor air quality in daily life. Two main parameters, carbon dioxide (CO₂) and particulate matters smaller than 10 ㎛(PM₁?), were selected as index pollutants for the management of indoor air quality. The former pollutant, CO₂, is regarded as index of ventilation status and the major source of CO₂ in the train or subway is the exhalation of passengers. It is publically perceived that the high CO₂ concentration in a crowded subway will be reduced and ventilated with outdoor air by door-opening taken every 2 or 3 minutes when the train stops each station. However, there has not been any scientific proof and quantitative information on the effect of door-opening on the CO₂ reduction by ventilation with outdoor air. In this study, CO₂ concentration and number of passengers were measured at each station on the 3 lines of Korail metropolitan subway. In order to evaluate the effect of CO₂ reduction by door opening, the theoretical approach using the CO₂ balance equation was performed. By comparing the predicted data with monitoring one, the optimum CO₂ dilution factor was determined. For the first time, it was quantified that about 35% of CO₂ concentration in the subway indoor was removed by the door-opening at each station.
권순박(Kwon Soon-Bark),김세영(Se-Young Kim),신창헌(Chang-Heon Shin),배성준(Sung Joon Bae),황선호(Sun Ho Hwang),강중구(Choong-Ku Kang),김성환(Seong-Hwan Kim),김태성(Taesung Kim),김진호(Jin-Ho Kim) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
Management of indoor air quality of underground subway station is an important issue. The air handling unit (AHU) installed in the underground subway station is the main facility determining the air quality of station. Especially for removing particulate matters, it is important to operate the appropriate air filter. However, there is no quantitative test method for existing air filter in site. It is rarely known that the collection efficiency of air filter can satisfy the designed criteria or not. In this study, we set the reference method using the mini-volume air sampler inside the AHU to evaluate the collection efficiency of different types of air filters. In addition, we applied the portable instrument based on the light-scattering method to the efficiency test. The method we applied in this study can be used in the evaluation of air filter in site.
권순박(Kwon Soon-Bark),김세영(Kim Se-Young),조영민(Cho Youngmin),박덕신(Park Duck-Shin),배광호(Bae Khwang-Ho),유건종(Yoo Gun-Jong),김정수(Kim Jung-Su) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
Air conditioning of subway cabin is achieved by two separate air conditioners installed on the top of the cabin. Cooling air is supplied through the line duct on the ceiling through the whole cabin indoor evenly, and the return air is exhausted to the center area of ceiling. Depending on the indoor air quality, outdoor air is introduced into the cabin. A part of air is pressurized out through the exhaust duct by the positive pressure condition of cabin indoor. However, cabin indoor is not always maintained in a positve pressure by frequent door opening during operation. Therefore, outdoor air can be introduced through exhaust fan and tunnel air, highly polluted by fine particles can cause a indoor air pollution. In this study, we measured air velocity, pressure difference, and particle concentration in order to reveal the inflow of outdoor air. We found that outdoor air was introduced during the subway acceleration by the inertial force of indoor air.
권순박(Soon-Bark Kwon),김세영(Seyoung Kim),김명준(Myungjoon Kim),박덕신(Duck-Shin Park),정우태(Wootae Jeong),김태성(Taesung Kim) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
Management of indoor air quality of underground subway station is an important issue. The air handling unit (AHU) installed in the underground subway station is the main facility determining the air quality of station. Especially for removing particulate matters it is important to operate the appropriate air filter. In this study we studied particle collection efficiency of axail-flow cyclone for subway AHU. The particle collection efficiencies of axial-flow cyclones with three different outlet shape have been evaluated.
권순박(Soon-Bark Kwon),박덕신(Duck-Shin Park),조영민(Youngmin Cho),김종범(Jong-Bum Kim),조관현(Goan-hyun Cho),남궁석(Goongseok Nam),이주열(Jooyeol Lee),김태성(Taesung Kim) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
More than 7 million persons use Seoul Metropolitan Subways (SMS) everyday and the number has been in increasing trend. With the increasing trend of concerns on indoor air quality(IAQ), the management of IAQ has become an important issue, especially in case of subway operators, because most of subway lines are placed underground with poor ventilation condition. The ultimate object of study develop independent cleaning device that reduce efficient fine particle and CO2. Urban subway has characteristics about proper clean air flow, must be installed in narrow space and maintenance cycle has enough time. Two layered electrically pre-charged filters were used for removing particulate matters and gas absorbers are packed between two layer filters for removing gases pollutants such CO₂, VOCs and HCHO. Urban subway has characteristics about proper clean air flow, must be installed in narrow space and maintenance cycle has enough time. SCAP prototype is producted as all in one method which decrease fine dust, CO₂ and noxious gas. and basic test carry out with quantity of wind, a gap of pressure, sampling efficiency.