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다중이용시설의 실내공기질 정보의 효과적 활용 및 관리를 위한 시설관리자와 지자체 공무원의 요구분석
엄예슬,신희원,강동화 한국건축친환경설비학회 2021 한국건축친환경설비학회 논문집 Vol.15 No.6
The objective of this study was to analyze the facility manager and local government officials’ needs to utilize the indoor air quality (IAQ) information and to manage the IAQ in multi-use facilities. For this purpose, the survey was conducted on 97 managers and 35 officials of child care facilities (CCF), elderly care facilities (ECF), and underground multi-use facilities (UMF). The questionnaire consisted of work information, cognition on IAQ, the preferred method of providing IAQ information, and management status. The results show that the number of managed facilities per official is as high as 64. In the case of management and recording of IAQ measurement by facility, the UMF was the best (92.9%), and the ECF was the lowest at 71.9%. In addition, as for the preferred IAQ information route, the preference for mobile (app and alarm) was high at 49.2%, and the demand for the prevalence of the monitoring system was high at 28.0%. Since the types of pollutants that can be provided and the frequency of information provision are different, it is necessary to select the range of IAQ information for each facility.
공동주택의 건물 기밀도와 대기 중 먼지 침입지표의 상관관계 분석
엄예슬,박보람,강동화 한국건축친환경설비학회 2021 한국건축친환경설비학회 논문집 Vol.15 No.1
The objective of this study is to investigate the correlation of particle infiltration and building airtightness according to the deterioration of apartment housing units. For this purpose, the blower door test and particle infiltration experiments were conducted in 6 apartment housing units. The blower door test was conducted to measure the airtightness and the leakage area of suspected particle penetration pathways. The infiltration test method was performed to estimate the size-resolved particle penetration coefficient (P), infiltration factors (Finf), and outdoor particle infiltration rate (P×λ). During the infiltration test, the indoor and outdoor pressure difference was maintained at 10Pa using the blower-door depressurization procedure. The blower door test results showed that the difference in the airtightness level of leaky and average airtight housing units was about 2.5 times. The particle infiltration test results showed that the penetration coefficient (P), infiltration factor (Finf), and outdoor particle infiltration rate (P×λ) tended to decrease as the particle diameter increases. This result means that small particle size can easily pass through the crack in the envelope of the building. According to the results of the relationship between infiltration and airtightness, it was analyzed that the indoor particle concentration of leaky housing units could be 4.34 times higher than average airtight housing units under the same outdoor particle concentration condition. The results suggest that the required amount of particle removal may differ depending on the airtightness of the building.
초등학교 교실의 실외 미세먼지 침입을 고려한 공기청정기의 설치위치에 관한 사례연구
엄예슬(Eom, Ye-Seul),박보람(Park, Bo-Ram),김수경(Kim, Su-Gyeong),강동화(Kang, Dong-Hwa) 한국건축친환경설비학회 2020 한국건축친환경설비학회 논문집 Vol.14 No.2
The purpose of this study was to analyze the placement of the portable air cleaner in the classroom affected by outdoor particle infiltration. For this purpose, field experiments and computational fluid dynamics (CFD) simulation based on Lagrangian method were conducted. The field experiments on 3 elementary school classrooms located in Seoul were conducted to measure the airtightness and the leakage area of suspected particle penetration pathways. The CFD simulation considering outdoor particle infiltration was conducted to evaluate the particle removal performance according to the placement of portable air cleaner. The experiment results show that the leakage area of classrooms is significantly large indicating that classroom air quality can be influenced by outdoor particle infiltration. The CFD simulation results show a large variation of the overall particle removal for different positions of the portable air cleaner. Assuming the outdoor particle concentration is 125 ㎍·m<SUP>-3</SUP>, the particle removal performance varies by a factor of 3.06 times depending on the position of the air cleaner.
주거건물용 이중외피 통합형 전기집진기의 미세먼지 집진성능 수치해석 평가
엄예슬(Eom, Ye Seul),최동희(Choi, Dong Hee),강동화(Kang, Dong Hwa) 대한건축학회 2018 大韓建築學會論文集 : 構造系 Vol.34 No.12
The objective of this study was to evaluate particle collection performance of electrostatic precipitator (ESP) integrated with double skin façade in naturally ventilated residential buildings using numerical method. To evaluate the efficiency, computational fluid dynamics (CFD) simulation based on electric potential and Lagrangian method was applied. The CFD model was validated by comparing the simulated results with the experimental data including thermal characteristic of double skin façade (DSF) and particle removal characteristic of electrostatic precipitator. The validation results showed that the root mean square error (RMSE) between predicted values and measured values of velocity and temperature in intermediate space of DSF was 1.2%. The adequacy of ion space charge density and turbulent model were determined. The RMSE between predicted values and measured values of collection efficiency of ESP was 9.2%. In addition, the case study was performed to present the application of the numerical method based on validation results of ESP integrated with façade.
초등학교 교실의 실외 미세먼지 침입을 고려한 공기청정기의 설치위치에 관한 사례연구
엄예슬(Eom, Ye-Seul),박보람(Park, Bo-Ram),김수경(Kim, Su-Gyeong),강동화(Kang, Dong-Hwa) 한국건축친환경설비학회 2020 건축환경설비 Vol.14 No.2
The purpose of this study was to analyze the placement of the portable air cleaner in the classroom affected by outdoor particle infiltration. For this purpose, field experiments and computational fluid dynamics (CFD) simulation based on Lagrangian method were conducted. The field experiments on 3 elementary school classrooms located in Seoul were conducted to measure the airtightness and the leakage area of suspected particle penetration pathways. The CFD simulation considering outdoor particle infiltration was conducted to evaluate the particle removal performance according to the placement of portable air cleaner. The experiment results show that the leakage area of classrooms is significantly large indicating that classroom air quality can be influenced by outdoor particle infiltration. The CFD simulation results show a large variation of the overall particle removal for different positions of the portable air cleaner. Assuming the outdoor particle concentration is 125 ㎍·m<SUP>-3</SUP>, the particle removal performance varies by a factor of 3.06 times depending on the position of the air cleaner.
다중이용시설의 실내공기질 정보활용 및 관리를 위한 시설이용자의 요구분석
엄예슬(Eom, Ye-Seul),신희원(Shin, Hee-Won),강동화(Kang, Dong-Hwa) 한국건축친환경설비학회 2020 한국건축친환경설비학회 논문집 Vol.14 No.5
The objective of this study was to analyze the facility user’s needs to utilize the indoor air quality (IAQ) information and to manage the IAQ in multi-use facilities. For this purpose, The survey was conducted on 161 facility users of daycare centers, elderly care facilities, and underground complexes. The survey questions were composed of the causes of air pollution, the degree of satisfaction of IAQ in the facility, and the scope of IAQ information. The results show that the degree of interest in IAQ of facility users was very high. 79.5% of the respondents responded that the IAQ of the facility affects their visits. However, only 8.7% of respondents said they were provided with IAQ information. Also, 68.3% of the respondents hoped to receive IAQ information directly from the field or through mobile applications. In order to provide effective IAQ information, this study suggests the need to provide IAQ information at the facility site with the use of mobile applications reflecting the needs of facility users.
여름철 고층아파트 건물의 주동형태와 밀도가 층별 외부 열환경에 미치는 영향
엄예슬(Eom, Ye-Seul),김용진(Kim, Yong-Jin),강동화(Kang, Dong-Hwa) 한국건축친환경설비학회 2018 한국건축친환경설비학회 논문집 Vol.12 No.2
The object of this study is to analyze the outdoor thermal environment of pedestrian and residents of high-rise apartment buildings complexes considering the vertical temperature distribution in summer by evaluating the trend of vertical temperature distribution according to the shape and densities of high-rise apartment buildings. For this purpose, the outdoor vertical temperature of the buildings was analyzed for each apartment complex using the ENVI-met simulation program. Also, the outdoor thermal environment analysis technique in the high-rise apartment complex was validated through the outdoor vertical temperature measurement in the apartment building complex. As a result of the analysis of the outdoor thermal environment, ground surface temperature was analyzed to be strongly influenced by the surface heating by solar radiation. In addition outdoor temperature at the pedestrian level increases with increasing the plan area density (λp) and the frontal area density (λF). However, in the case of high-rise apartment buildings, the trend of increasing the outdoor temperature is relatively large, which suggests that the increase in the density of the buildings affects the outdoor thermal environment. As a result of the analysis of the outdoor thermal environment, when planning a high-rise apartment complex, it is suggested that the density and the shape should be actively considered to improve the outdoor thermal environment.