http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
스마트 윈도우 설치 속성에 따른 사무공간의 주광 환경 추이
김재향,한승훈 한국신·재생에너지학회 2023 신재생에너지 Vol.19 No.3
Smart windows are capable of varying their visible light transmittance (VLT) in response to changing environmentalconditions. The VLT variability of architectural windows is highly valuable because it enables indoor lighting and energy environmentsto align with external changes. However, challenges such as high installation costs and assurance of glass visibility have prompted theexploration of alternative solutions, including models incorporating partially applied smart windows., Prior research focused on usefuldaylight illuminance (UDI) analysis for south-facing office buildings, pointing out suitable areas for smart-window implementation toenhance lighting control. In this study, we broadened this scope by determining optimal smart-window application zones underchanging building orientation. Furthermore, we studied the correlation between building orientation and smart-window deployment areas.
김재향,한승훈 한국토지주택공사 토지주택연구원 2022 LHI journal of land, housing, and urban affairs Vol.13 No.1
A smart window is a new building material that can realize energy savings in a building. Smart windows can freely adjust Visible Light Transmittance (VLT) and solar gain coefficient (g-value) according to the situation. Smart windows include such technologies as Electrochromic (EC), Suspended Particle Device (SPD), and Polymer Dispersed Liquid Crystal (PDLC). Recent research on building energy savings through the VLT and g-value control functions of smart windows is being actively conducted and meaningful results are being drawn. However, since most of the research is focused on energy savings, research on the indoor environment is somewhat lacking. A building is a space where people live and the comfort of life should be prioritized before energy savings. Therefore, in this study, analysis on the daylight performance of an office space was carried out. Through green building standards such as LEED, BREEAM, CASBEE, and G-SEED, the daylight performance was reviewed according to VLT value changes of the smart window. In addition, a study was conducted on the VLT range of the electrochromic façade that can maintain a comfortable indoor environment. The smart window used electrochromic control with a wide range of VLT. The study showed that the minimum VLT of a smart window that can satisfy G-SEED is 25% or more. In addition, it was found that the VLT change of the electrochromic smart window did not significantly affect the uniformity of the room. When the LEED standard was applied, the minimum VLT value of the electrochromic smart window that must be maintained according to each orientation of the building was derived.
김재향(Jae-Hyang Kim),한승훈(Seung-Hoon Han) 한국정보기술학회 2021 Proceedings of KIIT Conference Vol.2021 No.11
BIM(Builidng Information Modeling)이란 자재 정보, 시공 정보 등 시설물의 생애주기에 걸쳐 발생하는 모든 정보가 통합되어 작성되어진 3D 모델을 의미한다. VR(Virtural Reality) 보급이 확산됨에 따라 3차원 건축 모델을 VR 모델로 변환시켜 시공 전 미리 검토하는 방법이 고안되고 있다. 이와 같은 배경에서 정보가 통합되어진 BIM 모델을 VR로 전환할 때 고려해야 할 점들과 특징을 분석하고, BIM 정보의 VR 활용에 대하여 논의하고자 한다. BIM(Building Information Modeling) refers to a 3D model created by integrating all information that occurs throughout the life cycle of a facility, such as material information and construction information. As VR(Virtual Reality) spreads, a method of converting a 3D architectural model into a VR model and reviewing it before construction is being devised. Against this background, the purpose of this study is to analyze the points and characteristics to be considered when converting the BIM model to VR, and to discuss its use of BIM information.
김기래,김재향 新羅大學校 2001 論文集 Vol.50 No.-
지금까지 통신시스템에 많이 사용된 PLL 방식에 의한 주파수 합성기는 여러 장점이 있지만 위상잡음 특성이 나쁘고 긴 주파수 도약 시간을 갖기 때문에, 최근의 고속(1㎲이하)으로 주파수 호핑(Frequency Hopping)을 요구하는 차세대 이동 통신 시스템에서는 사용이 불가능하다. 본 연구는 차세대 이동통신 시스템에서 1600 hops/s 속도로 600개 이상의 램덤한 주파수를 발생하는 주파수 합성기를 DDS(Direct Digital Synthesis) 방식을 이용하여 설계하였다. The PLL synthesizer is used in communication system until now because it have several merits. such as broad bandwidth, high accuracy and stability of frequency. But it is difficult to use in the third generation mobile communication systems that need frequency hopping at a high speed because of its long frequency hopping time. In this paper, we designed the frequency synthesizer that generate frequencies randomly at a high speed using the DDS technology.
Electrochromic 키네틱 루버가 적용된 사무공간의 여름철 냉방부하 평가
김재향(Kim, Jae-Hyang),최승주(Choe, Seung-Ju),한승훈(Han, Seung-Hoon) 한국생태환경건축학회 2021 한국생태환경건축학회 학술발표대회 논문집 Vol.21 No.2
Recently, research on materials capable of converting visible light transmittance (VLT) and solar heat gain coefficient (g-value) is active. There are prior studies trying to realize sustainable architecture by reducing energy consumption by applying these materials to architecture. In this study, the summer cooling load savings were analyzed when these materials applied with kinetic louvers. Data from electrochromic with the widest VLT and g-value variable range were used. Simulation using Energyplus engine was used as the analysis method, and target space was limited to office.
사무공간의 Electrochromic 외피 적용 면적에 따른 Useful Daylight Illuminance 조절 능력 분석
김재향(Jae-Hynag Kim),한승훈(Seung-Hoon Han) 한국정보기술학회 2022 Proceedings of KIIT Conference Vol.2022 No.6
스마트 외피라고 불리는 Electrochromic(EC)은 Visible Light Transmittance(VLT)를 능동적으로 자유롭게 조절할 수 있는 특징을 지닌다. 이러한 특징은 실내에서 유용하게 사용할 수 있는 빛인 Useful Daylight Illuminance(UDI)의 조절을 가능하게 한다. 사무공간은 커튼월 시스템을 이용하여 넓은 면적의 창을 가지기 때문에 실내로 유입되는 빛을 조절할 필요가 있으며, EC를 통한 적절한 채광 환경 조성에 관한 많은 선행 연구들이 이루어지고 있다. 하지만, 스마트 외피는 현재 매우 고가이기 때문에, 창호 전면에 적용하기에 비용적인 문제가 있으며, 구역을 나누어 사용하는 방법으로 현재 이용되고 있다. 이 연구에서는 이러한 현실을 반영하여, 외피에 적용된 EC의 면적에 따른 UDI 조절 범위에 대한 탐색과 분석이 이루어졌으며, Radiance 엔진 기반 시뮬레이션 방법을 통해 수행되었다. Electrochromic (EC), called the smart façade, has the characteristic of freely adjusting the Visible Light Transmittance (VLT). This feature makes it possible to adjust the Useful Daylight Illuminance (UDI), a light that can be usefully used indoors. Because the office space has a large window using a curtain wall system, it is necessary to control the light entering the room, and many previous studies are being conducted on the creation of an appropriate daylight environment through EC. However, since the smart façade is currently very expensive, there is a cost problem in applying it to the front of the window, and it is currently used as a method of dividing the area. In this study, reflecting this situation, the search and analysis of the UDI control range according to the area of EC applied to the integument was conducted. It was performed through a simulation method based on the Radiance engine.