• Research Article

    Indoor Air Quality Management Methods Considering Airborne Pathogens and Fine Particulate Matters in Elementary School

    초등학교 교실 내 공기전파감염원과 미세먼지 농도를 고려한 실내 공기질 관리 방법 분석

    Hwang, Seok-Ho, Cheong, Chang-Heon

    황석호, 정창헌

    This study evaluated the fine particulate matter concentrations and airborne infection risks in the classroom of elementary school due to various environmental … + READ MORE
    This study evaluated the fine particulate matter concentrations and airborne infection risks in the classroom of elementary school due to various environmental and behavioral conditions. Simulation model was established by mass-balance equations and Wells-Riley equation. The indoor air pollutants are CO2, PM2.5, PM10, SARS-CoV-2. The ventilation system with HEPA filter and air purification system are set to air cleaning devices. In addition, occupants mask types are considered. To remove particulate matters (PM 2.5 and PM 10), ventilation system showed limited effects, and air purification system with HEPA filter can be good solution. Airborne infection risk by SARS-CoV-2 can be reduced by wearing masks and adopting ventilation system and air purification system. Wearing N95 mask showed drastic infection risk reduction. Ventilation system that already installed to classroom also good performance to reduce infection risk. Air purification system also shows marginal infection risk reduction, in current classroom setting. - COLLAPSE
    30 April 2022
  • Research Article

    Analysis of Energy Requirements according to Construction and Exterior Blind System: Focusing on Busan EDC Smart Village

    구조방식 및 차양장치에 따른 에너지 요구량 분석: 부산 EDC 스마트빌리지를 중심으로

    Kim, Hyun-Jin, Oh, Dae-Seok, Lee, Jeong-Hun, Cho, Woo-Jin, Park, Tae-Ha, Woo, Kyung-Hun

    김현진, 오대석, 이정훈, 조우진, 박태하, 우경헌

    With the Paris Agreement, 195 countries are conducting various studies aimed at reducing greenhouse gas emissions. The Green New Deal has been … + READ MORE
    With the Paris Agreement, 195 countries are conducting various studies aimed at reducing greenhouse gas emissions. The Green New Deal has been announced in Korea and is working to reduce greenhouse gases in various fields. Accordingly, we conducted an analysis of energy requirements according to structural methods and passive technology elements. Heat transfer analysis was conducted with HEAT2 and energy analysis and Exterior Blind systems were applied using Energy#. As a result, RC structures are better at reducing heating energy requirements than PC structures. In addition, passive technology has a greater impact on energy than structural methods. - COLLAPSE
    30 April 2022
  • Research Article

    Trend Analysis and Development Strategy for Evaluation Method of Smart Housing Services

    스마트하우징 주거서비스 평가방법 개발 방향

    An, Sang-Min, You, Ji-Won, Choi, So Ra, Bae, Yung-Ho, Park, Myung-Kyu, Kim, Sung-Wan

    안상민, 유지원, 최소라, 배융호, 박명규, 김성완

    This study aims to conduct a fundamental study to develop a quantitative evaluation method for smart housing services that can provide residential … + READ MORE
    This study aims to conduct a fundamental study to develop a quantitative evaluation method for smart housing services that can provide residential environments and residential service solutions. This evaluation method is also to provide standards for convergence measures with information and communication technologies that are unfamiliar to building stakeholders who are familiar with traditional and physical housing elements such as surrounding environment, space, and facilities. Through literature review, the concept and contents of smart home, smart housing, smart housing platform, and housing services are understood. The technical standards of the existing rating system and standards related to smart building such as Intelligent Building System (IBS), G-SEED, Standard for Housing Service, etc. were analyzed. Eight evaluation categories of smart housing service such as strategy, platform, safety, convenience, wellness & comfort, energy, community, operation & maintenance were derived through a review of the existing literature. As a result of the expert survey on the importance of evaluation categories for smart housing service, safety service was the highest. In the case of the smart housing service evaluation procedure, the importance of the three-stage evaluation consisting of planning, design, construction and operation was high at 4.56. - COLLAPSE
    30 April 2022
  • Research Article

    Effect of Acoustic Calibration Factors of Measurement Equipments on Test Results of Floor Impact Noises

    음향측정 장비의 교정 요인이 바닥충격음 측정 결과에 미치는 영향

    Kim, Yong-Hee, Yeon, Jun-Oh

    김용희, 연준오

    This study investigated the effects of calibration factors of acoustic measurement equipments on results of floor impact noises to construct more reliable … + READ MORE
    This study investigated the effects of calibration factors of acoustic measurement equipments on results of floor impact noises to construct more reliable test system in terms of acoustic calibrator, frequency analyser and microphones. Acoustic calibrator provides reference sound pressure level of 94 dB at 1,000 Hz, then a correction value is derived by coupling it to each microphone in advance to the measurement. Floor impact measurement data using a heavy-weight impact source was employed to examine other calibration factors. Since calibration values of a multi-channel frequency analyzer are provided in terms of voltage value in V, a conversion method is suggested by converting it into a level value in dB so as to compare with sound pressure levels. As for the calibration report of individual microphone, its sensitivity value in V/Pa was converted into a level value in dB for each frequency band. By summing up above acoustic calibration factors for each channel of the frequency analyser, the corrected levels of the floor impact measurement data showed no significant difference with the uncorrected data. - COLLAPSE
    30 April 2022
  • Research Article

    Independence Test for Particle Intervals in Lagrangian based CFD Using Statistical Analysis

    통계분석을 활용한 라그랑지언 기반 전산유체역학의 입자 간격에 대한 독립성 평가

    Park, Hyun-Gyu, Park, Seong-Hyun, Seo, Jang-Hoo

    박현규, 박성현, 서장후

    With the recent increase in interest in indoor PM and the use of CFD, many studies on indoor PM use CFD. However, … + READ MORE
    With the recent increase in interest in indoor PM and the use of CFD, many studies on indoor PM use CFD. However, in CFD analysis of indoor PM, there is a limit to realizing the same number of particles as in the experiment due to problems of analysis time and physical specifications of the equipment. For this reason, although a limited number of particles is generally used, studies on an appropriate number of particles are scarce. Therefore, in this study, the R2, Cv (RMSE), error rate of the results and analysis time according to intervals of the initial uniformly distributed particle were compared. In the CFD analysis space of 8 m3 volume, the residual particle concentration after 1 hour of ventilation was compared and analyzed. The Case with the IP (Interval of initial particles) of 40 cm also showed a high correlation based on the case with the IP of 2.5 cm. Considering both the analysis time and the reliability of the results, it is judged that the IP of this analysis is 10 to 20 cm appropriate. - COLLAPSE
    30 April 2022
Journal Informaiton Journal of Korean Institute of Architectural Sustainable Environment and Building Systems Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
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