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열회수형 환기장치의 미세먼지 집진효율 평가 및 개선방안
유정연(Jungyeon Yu),배상환(Sanghwan Bae) 한국생태환경건축학회 2024 한국생태환경건축학회 논문집 Vol.24 No.1
Purpose: In this study, the actual pollutions(fine dust) collection efficiency of ventilation systems applied to buildings was evaluated. The cause of internal leakage was identified using PIV, and through this, a direction for improving the performance of ventilation systems and an effective test method for removing pollutants were proposed. Method: A pollutant collection efficiency evaluation system composed of indoor and outdoor chambers of ventilation equipment was established, and performance evaluation was performed on two types of small ventilation equipment that are generally applied to daycare centers and apartment houses. The actual fine dust collection efficiency was evaluated for two types of ventilation systems equipped with HEPA air filters, which are generally applied to daycare centers and apartment houses. Result: As a result of the evaluation of the fine dust collection efficiency of the ventilation system, in the case of product A, which has a relatively large amount of leakage around the air filter inside the ventilation system, the fine dust collection efficiency for PM2.5 was 58 %, and it was evaluated that it largely fell short of the physical performance standard of the HEPA filter. On the other hand, in the case of product B, which improved the amount of leakage by improving the internal case details of the ventilation system, the fine dust collection efficiency for PM2.5 was 91%. It was confirmed that the fine dust collection efficiency of model B was significantly improved compared to model A.
제로카본 그린홈의 여름철 운영조건에 따른 실내 열환경 평가
유정연(Yu Jung yeon),조동우(Cho Dong woo),김기한(Kim Kee Han) 한국태양에너지학회 2020 한국태양에너지학회 논문집 Vol.40 No.2
The Korean government has a plan to mandate zero-energy buildings in 2020 for public and 2025 for private buildings. In order to design a zero-energy building, insulation and airtightness, which are the most basic elements of passive house technology, are required, and the government has been accomplished this through step-by-step strengthening of related standards. In passive house with high thermal insulation and airtightness performance, the heat introduced into the building through solar radiation can be stored for a long time to keep the inside warm during winter. On the other hand, during summer, heat introduced into the building cannot be easily released to outside, so it is necessary to actively block solar radiation and high temperature outdoor air to prevent an increase of indoor temperature. Therefore, this study aims to derive an appropriate operation condition of passive house to maintain the indoor temperature at an suitable level according to the ventilation methods and solar shading conditions. As a result, under the conditions that the outdoor temperature was 28°C or less, the ventilation using a heat recovery ventilation system at daytime and natural ventilation at nighttime were selected for the most appropriate operation method. In addition, in the case of solar shading, it was found that blocking solar radiation at daytime using the blind and open the blind at nighttime to ensure natural ventilation were selected for the most appropriate solar shading condition.
유정연(Jungyeon Yu),송수원(Suwon Song),조정식(Chungsik Cho),이윤규(Yunqyu Lee) 대한설비공학회 2019 대한설비공학회 학술발표대회논문집 Vol.2019 No.-
This paper analyzed the results of indoor air quality (IAQ) measurements for a total of 283 daycare centers in 2018. The measured IAQ types are 10 pollutants(CO2, TVOC, Radon, HCHO, CO, NO2, Mold, total airborne bacteria, PM10 and PM2.5) corresponding to the maintenance and recommendation standards of the Enforcement Rules of IAQ. The standards were revised twice on Oct. 18, 2018 and Feb. 13, 2019, and the standards were tightened for PM10 and PM-2.5. The measurements results show that the indoor conditions of the daycare centers met the 2018 criteria of IAQ in most pollutants items. However, for the post-revision criteria, PM10 exceeded the standard of 8% and PM-2.5 exceeded the standard of 9% for day care centers. Therefore, it is necessary to drive additional improvements for such daycare centers in order to meet the criteria of the revised IAQ standards to be enforced in July of 2019.
유정연(Yu Jung-Yeon),김민희(Kim Min-Hee),송규동(Song Kyoo-Dong) 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
The purpose of this study is to find methods to minimize glare problem of a newly developed wall-type daylight collecting system. A total of six glare reduction methods were comparatively tested through measurements with physical scale models. The six glare reduction methods included light-guiding ceiling, planer light shelf, parabolic light shelf, horizontal louvers, vertical louvers and prismatic panel, all of which were attached to the wall-type daylight collecting system. The measurements were conducted under direct sunlit conditions for the winter solstice, summer solstice and the equinox.
초고층 복합건축물 엘리베이터에서의 연돌현상 저감방안 평가
유정연(Jung-Yeon Yu),송규동(Kyoo-Dong Song),조동우(Dong-Woo Cho) 대한설비공학회 2009 설비공학 논문집 Vol.21 No.2
The purpose of this study is to evaluate the stack effect reduction alternatives in tall complex buildings in cold climates. The main problems in tall buildings occur in elevators. Such problems as elevator doors that do not close and exhaust airflows result in excessive pressure differences across elevator doors due to stack effect. Under the expected conditions causing these pressure differences, Field measurcmcnts arc performed in three tall buildings. Each result of thc measurements is analyzcd in architectural design aspects. With these analysis, building design guidelines are proposed and analyzed by field measuremcnts and computer simulations.
웹 서비스 발견을 위해 프로세스 정보를 기술하는 온톨로지
유정연(Jeong-Youn Yu),이규철(Kyu-Chul Lee) 한국전자거래학회 2007 한국전자거래학회지 Vol.12 No.3
지금까지 시맨틱 웹 서비스 발견은 WSMO나 OWL-S의 프로파일을 이용하여 수행되어 왔다. 그러나 이 연구들은 서비스의 이름과 input/output만을 이용하여 검색함으로써, '배송 후 지불을 하는 도서 판매 서비스를 찾아라.’와 같이 서비스의 내부 정보에 대한 질의를 수행할 수 없다. 본 논문에서는 이러한 문제를 해결하기 위해 TM-S 온톨로지와 TMS-QL을 제시한다. TM-S 온톨로지는 프로세스 정보를 이용하여 서비스의 행동을 기술하며, 3가지 하위 온톨로지인 프로세스 시그니처 온톨로지, 프로세스 구조 온톨로지, 프로세스 개념 온톨로지로 구성되어 있다. TMS-QL은 사용자가 TM-S 온톨로지에 대해 질의 요구를 기술할 수 있는 언어를 제공한다. Until now, most semantic web service discovery research has been carried out using either Web Service Modeling Ontology (WSMO) or a profile of OWL-based Web Service ontology (OWL-S). However, such efforts have focused primarily on service name and input/output ontology. Thus, the internal information of a service has not been utilized, and queries regarding internal information such as 'Find book-selling services allowing payment after delivery' are not addressed. This study outlines the development of TM-S (Topic Maps for Service) ontology and TMS-QL (TM-S Query Language), two novel technologies that address the aforementioned issues in semantic web service discovery research. TM-S ontology describes the behavior of services using process information and consists of three sub-ontologies: process signature ontology, process structure ontology and process concept ontology. TMS-QL allows users to describe service discovery requests.