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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.
후처리 장치에 의한 디젤엔진 배출가스의 미세 입자 입경분포 변화
권순박(Soonbark Kwon),김민철(Mincheol Kim),이규원(Kyoowon Lee),류정호(Jungho Ryu),엄명도(Myungdo Eom),김종춘(jongchoon Kim),정일록(Ilrok Chung) 한국자동차공학회 1999 한국 자동차공학회논문집 Vol.7 No.7
Diesel particulate matter is known to be one of the major harmful emissions produced by diesel engines. Diesel particulates are subject to diesel emission regulations and have lately become the focus in the diesel emission control technology. Thus, the aftertreatment system is adopted at the diesel engine exhaust to reduce the particulate emission. Although this benefit is recognized, it is not clear how the aftertreatment system influences quantitatively the particle size distribution. In this study, the particle size distributions of diesel exhaust were measured using the scanning mobility particle sizer with and without the aftertreatment system. The results showed that the diesel particulate filter and plasma system reduced the number of emitted particles by more than 90% and about 80% respectively in the particle size range of 20㎚ ~600㎚ . On the other hand, no significant effect of the diesel oxidation catalyst on the particle number concentration was detected.<br/>
박덕신(Park Duckshin),조영민(Cho Youngmin),권순박(Kwon Soonbark),박은영(Park Eunyoung),옥민환(Ok Minhwan) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
In this study, it was suggested how to monitor the air quality with use of intelligent wireless sensor network in the subway station. When Zigbee-based ubiquitous sensor network was used, smaller budget was required in configuring the system compared to existing air-quality monitoring method and this system may easily be configured due to easy installation of communication cables. The study will be continued to supplement the network systems currently installed in subway stations and the completion of development of this system is expected to make a large contribution in improvement of indoor air quality.
박덕신(Park Duckshin),조영민(Cho Young-Min),권순박(Kwon Soonbark),은성배(Eun Seongbae) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
The emergence of sensor networks as one of the dominant technology trends in the coming decades. These networks are likely to be composed of hundreds, and potentially thousands of tiny sensor nodes, functioning autonomously, and in many cases, without access to renewable energy resources. Cost constraints and the need for ubiquitous, invisible deployments will result in small sized, resource-constrained sensor nodes. Ubiquitous sensor network(USN) module with 4 kinds of air quality monitoring sensors was developed for indoor environment monitoring system in subway stations. The module has various enlargement for various kinds of sensors such as temperature sensor, humidity sensor, CO2 sensor, particulate sensor. To reduce the measurement error of sensors, we calibrated each sensor using standard gases and particles. The development wireless node is very convenient to be installed in the subway stations. USN is expected to be used for the cheap and easy way for indoor air quality monitoring.
박덕신(Park Duckshin),조영민(Cho Young-Min),권순박(Kwon Soonbark),박병현(Park Byunghyun),박은영(Park Eunyoung) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
The emergence of sensor networks as one of the dominant technology trends in the coming decades. These networks are likely to be composed of hundreds, and potentially thousands of tiny sensor nodes, functioning autonomously, and in many cases, without access to renewable energy resources. Cost constraints and the need for ubiquitous, invisible deployments will result in small sized, resource-constrained sensor nodes. Ubiquitous sensor network(USN) module with 4 kinds of air quality monitoring sensors was developed for indoor environment monitoring system in subway stations. The module has various enlargement for various kinds of sensors such as temperature sensor, humidity sensor, CO₂ sensor, particulate sensor. To reduce the measurement error of sensors, we calibrated each sensor using standard gases and particles. The development wireless node is very convenient to be installed in the subway stations. USN is expected to be used for the cheap and easy way for indoor air quality monitoring.
박덕신(Park Duckshin),조영민(Cho Youngmin),권순박(Kwon Soonbark),박은영(Park Eunyoung),김세영(Kim Seyoung),정미영(Jung Miyoung) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
As the standard of living is higher, the passengers using public transportations desire better qualities of environment as well as more comfortable indoor environment. In case of train, the passengers’ comfort in passenger cabin is one of the most important elements to be competitive with other transport systems. The indoor air quality of the cabin should be managed properly, because many passengers travel for a long time in the small space of 144 ㎥. For proper management of the air quality, the heating, ventilation and air conditioning (HVAC) system is required for the ventilation of the compartment. To maintain comfortable environment in the compartment, the automatic ventilation system is needed to exchange the indoor air with fresh air or clean indoor air. In this study, we investigated the indoor air quality (PM-10, CO₂, and VOCs) in the compartment of train. In addition, type and pattern of PM-10 has been analyzed through the clustering analysis. Based on the analysis, we could found that the fine particulate matters in the compartment can be a serious hazard to human. To control the concentration of PM-10 and CO₂ air cleaners were developed. Through this study, it is expected that people who take a train will be in a more comfortable environment.
박덕신(PARK Duchshin),조영민(CHO Youngmin),권순박(KWON Soonbark),박은영(PARK Eunyoung) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
Because the indoors spaces of the passenger cabin is generally airtight to secure the safety of passengers and enhance the efficiency of the cabin air conditioning performances, the contamination pattern of them are largely similar to that of general indoor spaces. Therefore, continuous supply of outdoor air is required to keep the amenity of indoor space. Heating, ventilation, and air-conditioning (HVAC) system is composed of air cleaning filter, heater and air conditioned, blower and ducts. To achieve the clean indoor environment, an integrated control of each HVAC equipment are required. In this study, we developed the air cleaning system to enhance the amenity of the railroad passenger cabin.