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최보혜(Bo-Hye Choi),강재식(Jae-Sik Kang) 대한설비공학회 2013 설비공학 논문집 Vol.25 No.11
This study is to draw thermal property data during long-term aging, by testing the thermal conductivity of building insulation materials in Korea. The thermal resistance of extruded insulation within 3 days from manufacture performed well over the KS Standard. After 50 to 110 days, however, the thermal performance had deteriorated to the level of the KS standard. Eventually, after 4,000 days, the insulation performance had deteriorated to about 25.4~41.8% of the initial performance. Therefore, this research will be utilized as a reference for thermal properties during long-term aging, in order to improve standards and regulations related to building insulation materials.
결로개선형 복층유리 이중창의 동계 공동주택 현장 성능 평가
최보혜(Choi, Bo-Hye),박시현(Park, Si-Hyun),송승영(Song, Seung-Yeong) 한국건축친환경설비학회 2020 한국건축친환경설비학회 논문집 Vol.14 No.6
To reduce condensation risk and ensure occupant comfort, the Korean Design Standard for Preventing Condensation in Apartment Buildings was enacted in 2014. Because this design standard is made recent, few window products satisfy the condensation resistance requirement for glazing edges, especially in the coldest region. The aim of this study is to verify the performance of a window developed to reduce the risk of condensation through field tests in an actual apartment. Infrared thermal images were taken, indoor and outdoor temperature and indoor surface temperature were measured on-site, and the temperature difference ratio was analyzed. As a result, the developed window showed a significant reduction in the risk of condensation compared to the existing window.
상세 에너지정보 제공을 위한 공동주택에서의 용도별 에너지사용량 계측 및 원단위화 방법
최보혜(Choi, Bo-Hye),진혜선(Jin, Hye-Sun),강진경(Kang, Jin-Gyeong),김성임(Kim, Sung-Im),임재한(Lim, Jae-Han),송승영(Song, Seung-Yeong) 한국건축친환경설비학회 2015 한국건축친환경설비학회 논문집 Vol.9 No.6
Recognizing that the building sector is important to reduce greenhouse gas emissions, a variety of policies are being strengthened to reduce the energy consumption of buildings. For these policies to have a substantial effect, it is necessary to provide an energy information for building owners to easily understand. Especially, detailed energy consumption data by end-use (heating, cooling, domestic hot water, lighting, air moving, etc) can be a great help building owners and engineers to set out a specific action plan of improving energy efficiency. The aim of this study is to suggest a measurement method of energy consumption by end-use in apartment buildings for providing detailed energy information. Each energy consumption by end-use was classified and defined. Measurement and normalization methods were suggested to express the EUI (Energy Use Intensity) by end-use. It is considered that this measurement method is also able to be utilized in the area of HEMS (Home Energy Management System).
열교 영향을 반영한 트러스 단열 프레임 적용 외단열 시스템의 에너지 성능 및 경제성 평가
최보혜(Choi, Bo-Hye),송승영(Song, Seung-Yeong) 대한건축학회 2022 대한건축학회논문집 Vol.38 No.2
This study aims is to compare the energy performance and economic feasibility of outer wall insulation systems using conventional rectangular pipe frames as the base case with double and single truss-shaped insulation frames intended to reduce the thermal bridging effect of alt 1 and alt 2. Annual heating and cooling energy use were estimated by performing a dynamic building energy simulation. The thermal bridging effect was modeled by applying the linear thermal transmittance obtained from the three-dimensional steady-state heat transfer simulation to the building energy simulation. The annual energy cost, construction cost, and life cycle cost for 30 years were estimated together. The results indicated that the annual energy use of alt 1 and alt 2 decreased by 12.5% and 13.9%, the annual energy cost decreased by 11.8% and 13.2%, the construction cost decreased by 1.4% and 6.8% and the life cycle cost of alt 1 and alt 2 decreased by 2.6% and 7.5% respectively.
최보혜(Choi, Bo-Hean),권영숙(Kwon, Young-Sook) 계명대학교 간호과학연구소 2012 계명간호과학 Vol.16 No.1
Purpose: The study aimed to investigate the nursing students' attitude and preventive activities against inpatients' falls. Method: This is a descriptive study. Participants of the study include 431 nursing students. Data were collected from March 14th to April 5th, 2011. Data were analyzed using t-test, ANOVA and Pearson correlation coefficients with SPSS program version 17.0. Result: The findings of the study revealed that 74.2% of the participants had rendered fall-related education. 87.6% of them responded that the education was taking classes in nursing schools and 60.3% of them responded that the education was insufficient. The mean score of participants' attitude against falls was 3.73 of 5. Participants who had taken classes of fall prevention had significantly better attitude than the others (t=3.42, p=.001). The mean score of activities to prevent falls was 3.59 of 5. Participants who had taken classes of falls prevention had significantly better activities to prevent falls than the others (t=2.56, p=.011). There was a significant positive correlation between attitude against fall occurrence and activities to prevent falls (r=.176, p<.001). Conclusion: The score of the nursing students' attitude and activities to prevent falls was not high.
적외선 열화상을 이용한 공동주택 단열성능 평가 : TDR(온도상대비)을 중심으로
최보혜(Bo-Hye Choi),최경석(Gyoung-Seok Choi),강재식(Jae-Sik Kang),이승언(Seung-Eon Lee) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
The purpose of this study is to present an in-site evaluation method for building insulation performance using Infra-red camera. The research contents of this study are to evaluate validity and suitability of building insulation defect survey using Infra-red camera for apartment housing with temperature & heat flow pattern analyze method. By establishing the in-site evaluation method building insulation performance using infra-red camera, it is expected that 1) building envelope repair market will be activated by using developed method in ESCO and remodeling companies, 2) the method developed in this research will contribute to reduce national energy consumption by promoting old building insulation remodeling.