• Research Article

    Study on the Indoor PM Concentration Changes by SA·RA Location of Air Cleaning Ventilation System in Residential Space

    주거공간에서 공기청정 환기시스템의 SA·RA 위치에 따른 실내 미세먼지 농도변화

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

    박현규, 박성현, 서장후

    Recently, the concerns in the risk for PM (Particulate Matter) has increased. To reduce PM in residential space, Air cleaning ventilation system ... + READ MORE
    Recently, the concerns in the risk for PM (Particulate Matter) has increased. To reduce PM in residential space, Air cleaning ventilation system that is equipped with filtering technologies are being suggested. Particle matters, unlike other gas pollutants or CO2, have little influence on concentration diffusion. So, the consideration of the Air Change Rate and location of SA·RA is needed. Thus, this study analyzed indoor PM concentration change by Air change rate of Air cleaning ventilation system and locations of SA (Supply Air)·RA (Return Air). The result showed the increase in Air change Rate and location of SA have a significant effect on indoor ∅ 2.5 ㎛ Particle concentration changes. - COLLAPSE
    April 2019
  • Research Article

    Cooling Energy Consumption Characteristics in Office Building with Thermally Activated Building System and Dedicated Outdoor Air System

    구체축열시스템과 외기전담공조시스템이 통합 적용된 오피스건물에서 냉방에너지 소비량 특성

    Lee, Yoon-Sun, Lee, Keo-Re, Lim, Jae-Han

    이윤선, 이겨레, 임재한

    Thermally activated building system (TABS) has been regarded as one promising technology for energy saving and green-house gas reduction due to the ... + READ MORE
    Thermally activated building system (TABS) has been regarded as one promising technology for energy saving and green-house gas reduction due to the efficiency improvement of a cooling/heating equipment, and feasibility of combining other promising technologies such as ground source heat pumps or cooling towers. TABS can be achieved by running hot/cold water through pipes embedded in a building’s construction. Compared to conventional HVAC systems, TABS delivers higher water temperatures for cooling, and lower water temperatures for heating due to large heat exchange areas. Furthermore, water systems have less transport energy and ductwork spaces compared to existing air systems, due to high thermal capacitance of water. Because of the surface condensation problems in hot and humid weather conditions, TABS needs to be integrated with dehumidification system such as variable air volume (VAV) system or dedicated outdoor air system (DOAS). This study aims to evaluate the cooling energy consumption characteristics of thermally activated building system (TABS) integrated with DOAS in office building compared to the TABS with VAV system. In this study, the design cooling load in office building was firstly evaluated and indoor thermal environment was discussed by considering the surface condensation risk. Finally the cooling energy consumption of TABS with DOAS was compared with TABS and VAV system operation. When the total cooling energy consumption during the cooling period is compared, it is found that the integrated operation of TABS with DOAS is 24% more energy-efficient than integrated operation of TABS with VAV. Night-time electric energy consumption accounts for 34% of the total cooling energy consumption. - COLLAPSE
    April 2019
  • Research Article

    A Study on the Fire Safety of Disabled School for the Difference of Walking Speed

    보행속도 차이에 따른 장애인 학교시설의 화재 안전성 연구

    Kang, Eun-Hye, Choi, Jeong-Min

    강은혜, 최정민

    In this study, the characteristics of actual walking speed of the disabled students with no walking disorders and walking disorders such as ... + READ MORE
    In this study, the characteristics of actual walking speed of the disabled students with no walking disorders and walking disorders such as with a wheelchair or crutches are surveyed at the disabled school facilities. With these walking speed survey, the purpose of this study is to investigate the effect of fire and evacuation scenarios on the performance based design of fire system, and the effect of walking speed difference on the number of people who do not meet safety standards and finally to provide basic data for fire safety during the design or evacuation drill. - COLLAPSE
    April 2019
  • Research Article

    Cool Roof Status and Improvement Plan for Cooling Load Reduction

    냉방부하 저감 위한 쿨루프 현황과 문제점에 대한 개선방안

    Park, Min-Yong

    박민용

    In summer 2018, the temperature of Seoul was 39.6℃, as the Korea Meteorological Administration recorded the highest daily maximum temperature in ... + READ MORE
    In summer 2018, the temperature of Seoul was 39.6℃, as the Korea Meteorological Administration recorded the highest daily maximum temperature in 111 years since the observation and recorded the maximum number of heat days in Korea since 1973. In order to dissipate such sultry heat, the municipalities including the city of Seoul have changed the color of the roof of the building to paint the white roofing paint free of charge on the rooftop for promoting and spreading the Cool Roof campaign. However, the installation standards for domestic Cool Roof are simply specified that the solar reflectance is 0.65 or more, there is no specific and detailed standard. According to the ‘Market Research Report’ by Grand View Research, the world’s Cool Roof coating market in 2017 was $ 3.18 billion, adopted most governments green building codes, the size of the Cool Roof coating market is expected to reach $ 5.45 billion by 2025, with an annual average growth rate of 7.0%. At the time when the Cool Roof market increases, we will investigate the Cool Roof status and propose the improvement plan of problem in Cool Roof coating, which is proved to be effective for reducing cooling load and mitigation of heat island effect. - COLLAPSE
    April 2019
  • Research Article

    Analysis on Airborne Infection Risks of Various Buildings Considering Occupancy Patterns and Occupants’ Physical Characteristics

    재실 패턴과 재실자 신체적 특징을 고려한 건축물 용도 별 공기전파감염확률 분석

    Cheong, Chang-Heon

    정창헌

    This study analyzed the airborne infection risk of various building types by simulation. The airborne infection risk reflected the occupancy pattern and ... + READ MORE
    This study analyzed the airborne infection risk of various building types by simulation. The airborne infection risk reflected the occupancy pattern and occupants’ physical Characteristics. The comparative study explicitly shows the exposure time to airborne pathogen determined by occupancy pattern significantly impacts to the airborne infection risk. In kindergarten, children’s increased breathing rate and low infiltration rate of building can cause increased airborne infection risk. Elderly facilities show the highest airborne infection risks for the longest residency hours and low ventilation rates. - COLLAPSE
    April 2019
Journal Informaiton Journal of Korean Institute of Architectural Sustainable Environment and Building Systems Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
  • NRF
  • KOFST
  • crosscheck
  • open access
  • orcid
  • KISTI Cited-by
  • KISTI Current Status
  • ccl
Journal Informaiton Journal Informaiton - close