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권순박(S.-B. Kwon),송지한(J.H. Song),강석원(S.-W. Kang),정락교(R.-G. Jeong),김학범(H.-B. Kim),이창현(C.H. Lee),서동관(D.-K. Seo) 한국전산유체공학회 2013 한국전산유체공학회지 Vol.18 No.1
Personal Rapid Transit (PRT) is the emerging personal transport vehicle operating on the loop automatically. The PRT system utilize the electrical power from super capacity or battery, it is important to manage the power or energy. In this regards, the management of high temperature occurred by the operation of system is significantly important to prevent from serious damage of component. In this study, we studied the adequate shape of underbody which can reduce the heat accumulation by pickup coil and condenser using natural air cooling. We suggested the additional air pathway, air inlet and flow separator to decrease the temperature of the heat source components. It was found that suggested system can decrease the temperature of PRT under body by 16% during the static mode and by 10% during the running mode at 30㎞/h. It is expected that the findings of this study will feed into final design of newly built Korean PRT vehicle.
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.
도시철도 객실 공기정화장치(SCAP)의 운행차량 효율평가
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.10
In the modern society various types of transportation mode are utilized among them the subway system is the one of the main transportation mode which more than 7.21 million people ride a day. Because of interests on the indoor air quality (IAQ) of underground public facilities concerns on IAQ of subway system by many people are increasing. There are several approach to improve IAQ of subway station such as installing platform screen door (PSD) frequent tunnel washing-out and etc however there has not been any attempt to improve IAQ of subway cabin inside. Most technologies for removing airborne particulate matters are known to be difficult to adopt on the subway cabin since the problem of maintenance cost. Therefore the ultimate object of this study is a practical development of cabin air cleaning system which can reduce the concentration of airborne particles and harmful gases at the same time. The subway cabin air purifier (SCAP) was developed for removing particulate matters and gases pollutants inside a cabin. The whole system was designed and the roll-filter device was manufactured based on numerical prediction results. It is expected that SCAP could reduce indoor air pollutants in the subway cabin practically and it can be applied to other part of transportation vehicles.
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(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.
다단임팩터, SMPS 및 ELPI를 이용한 디젤배출입자의 크기분포 측정
권순박(Soonbark Kwon),김대성(Daeseong Kim),이창(Chang Lee),이규원(Kyoowon Lee),임철수(Cheolsoo Lim),류정호(Jungho Ryu),엄명도(Myungdo Eom),조규백(Gyubaek Cho),김홍석(Hongsuk Kim),정용일(Youngil Jung),이종덕(Jongduk Lee) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The size and mass distribution of diesel exhaust particles were measured using a cascade impactor, SMPS and ELPI with different engine operating conditions in engine speed and ratio. It was found that the total emission was increased with increasing engine speed and load ratio and about 80% of diesel exhaust particles were less than lum. The results of real time measurement of diesel particles by SMPS and ELPI showed that the peak diameter and number concentration increased as engine load ratio increased. It is interesting to note that the increasing rate at the size range of 265~385nm was the highest, while the nuclei mode particles (<50nm) were decreased or maintained constant when the engine load ratio increased. The size distribution measured dy SMPS and ELPI synchronously showed the reasonable correlations, however, the significant differences in absolute number concentration was observed.