알바루 시자 전시공간의 채광방식 유형 및 진화에 관한 연구

변영우,주범 한국문화공간건축학회 2021 한국문화공간건축학회논문집 Vol.- No.73

To Alvaro Siza, natural light is the essence of architecture that reflects his experiences in various architectural works. In addition, with the theme of daylight, he continues to work on how to allow light into the inner space. In using these lights in museum, several types of daylighting method can be found. Therefore, this study aims to understanding the typologies and the aspects of evolution in terms of daylighting method used in the exhibition space of Siza. His daylighting method can be classified into several categories through the use of daylighting and artificial lighting, and these categories have evolved into various forms through scattering of light. As a result, Along with the daylighting methods through the skylight, it attracts attention and attracts external scenery. Furthermore, for sufficient illumination daylighting methods are maintained by architectural resolution using side windows and high side windows without relying on artificial lighting. And the types of daylighting method have evolved in appropriate way to control the amount of light. In conclusion, the light used in the exhibition space is applied in various ways to create an atmosphere like daylight.

빛에 의한 치료적 효과 기반의 한국형 치매요양시설의 자연채광 계획 요소에 관한 고찰

지수인 한국의료복지건축학회 2022 의료·복지 건축 Vol.28 No.4

Purpose: This study examines the daylighting design factors of Korean dementia nursing homes, in order to realize a therapeutic environment based on the therapeutic effect of light in the rapidly aging trend with an huge increase in the population of dementia in Korea. Methods: Through literature reviews, this study aims to theoretically examine the therapeutic light environment for the elderly with dementia, derive daylighting design factors of Korean dementia nursing homes, and analyze their detailed design factors. Results: The result of this study can be summarized into two points. The first one is that the daylighting design factors reflected in dementia nursing homes are derived into six factors: building layout, windows, glazing, shading devices, spaces, and interior finishings that determine the availability of daylight. The second one is that the detailed daylighting design factors are shown as primary and secondary detailed design factors, and the main values to be considered when applying these factors into dementia nursing homes are analyzed as maximizing daylight availability, optimization of the possibility of therapeutic view, and anti-glare. Implications: The daylighting design factors will contribute to maximizing the availability of daylight, optimizing the possibility of view, and minimizing the glare in the living spaces of dementia nursing homes in Korea.

사무소건물에서 자연채광에 의한 조명에너지 절약의 평가

임병찬 대한설비공학회 2004 설비공학 논문집 Vol.16 No.6

Artificial lighting accounts for a significant portion of the energy use in office buildings. Therefore, daylighting is considered one of the fundamental design features of energy-efficient buildings. However, complex daylighting simulation tools are not suitable for most designers to help in the decision-making process. This paper provides the results of a simulation analysis to determine the potential energy savings of daylighting effects reducing electrical energy consumption for office building. A whole building simulation tool is used to determine the effects of daylighting on lighting electricity use as well as total electricity use for typical office buildings. It was determined that daylighting does not provide significant additional lighting energy savings when glass transmittance is increased over 0.7. A simplified method is developed based on the analysis results to estimate the annual electrical energy savings attributed to daylighting.

반사경 및 배열 구조에 따른 자연채광 연구

한정헌(HAN Jung-Hun),류성찬(Ryu Seong-Chan),윤준호(Yoon Jun-Ho),김정환(Kin Jung Hwan),김번중(Kim Bun-Jung),박선규(Park Sun-Kyu) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.11

The Solar Daylighting is the highly efficient and key technology for the green lighting and heat energy. It can be used in many industrial and residential facilities as the reusable energy and no waste generated. In this study, the ray tracing simulation was performed to analyze the shapes of different reflectors for the daylighting. Using Trace Pro program, at the time of the autumnal equinox and the winter solstice at fixed hours. As a result of this experiment, the linear arrangement of reflectors can be one of the useful and applicable daylighting method for the shaded area solar lighting in the aspects of illumination and heating area and hours of daylighting.

단지형 초고층 주거건축물의 자연채광성능 향상방안에 관한 연구

박경우(Kyoung-Woo, Park),권종욱(Jong-Wook, Kwon) 한국퍼실리티매니지먼트학회 2014 한국퍼실리티매니지먼트학회지 Vol.9 No.2

The purpose of this study is to propose some alternatives for securing a right of light for units within the high-rise residential building complex. Through the literature review, national building codes on the right of light are investigated and both natural daylighting and lighting techniques using equipments are studied. Supposing that a natural daylighting system is a possible alternative to bring daylight into the building, several methods to secure the right of light for buildings in high-rise building complex are proposed through the shadow analysis of different building arrangement, The results of study are as follows; For the shaded areas for the units of lower part of building that is located on the northern part of complex, reflecting mirror can be introduced. Solar radiation area (diffuse light) per unit area of the reflecting mirror is about 20-25m2 and transmission efficiency is about 75%. Regardless of the amount of sunlight, the units of facing north direction is completely excluded from sunlight, but natural daylight can be introduced through the use of reflecting mirror or light duct. For enclosed core spaces without windows to outside, the light pipe equipments from the top floor are effective solutions for daylighting. The enclosed spaces within units can bring daylight with light cable. With the effect of ultraviolet light for interior space, many side effects like sterilization and dehumidification can be obtained.

일조환경을 고려한 가구형(街區型) 집합주택의 형태 구성 방법론 연구

김호정(Kim, Ho-Jeong),문제현(Moon, Je-Hyun),김광현(Kim, Kwang-Hyun) 대한건축학회 2014 대한건축학회논문집 Vol.30 No.9

Perimeter block housing has been implemented in various new town development in Korea since 2000 as an alternative urban housing type as verse to high-rise development mostly common in urban residential areas. Perimeter blocks are relatively new built forms in Korea and considered more inferior in natural daylighting to free-standing buildings. Natural light is one of the most important amenities to insure inhabitable residential spaces, and perimeter block housing has to be carefully designed in consideration of natural daylighting. The objective of this research is to develop a design methodology of Perimeter block housing with the optimization of natural daylighting satisfying Rights to light. The case of Eunpyung Newtown is analyzed extensively in order to define the principles of solar shading and daylighting in Seoul. The result shows that the minimum distances between perimeter block housing, south-north=1.8h, east-west=0.7h, need to be satisfied in order to meet minium two hours of daylighting for the livingroom windows facing south or east. In addition, The minium distance between the buildings at each 15° azimuth angle is calculated based on the daylighting simulation. Azimuth angle 45°, 60°,?30°, and -45° are turned out to be the optimum azimuth angle. The design explorations are implemented to the preliminary massing of perimeter block housing using the principles of south-north=1.8h for closed blocks and the principles of minium distances between the buildings at various azimuth angle for open blocks with tower. The simulations are verified that the design alternatives meet the standard of Rights to light and the high Floor Area Ratio(FAR).

포물면 집광거울 방식의 태양광 집광채광시스템 개발

성태경(Tae-Kyung Sung),이충식(Chung-Sik Lee),김종민(Jong-Min Kim),정채봉(Che-Bong Joung),김병철(Byung-Chul Kim) 대한설비공학회 2013 설비공학 논문집 Vol.25 No.5

We developed a parabolic reflector based daylighting system which can be used as an alternative indoor daytime lighting device such as for fluorescent lamps. The system comprises three main components:a daylight concentrator made of 4 pairs of parabolic reflectors and mirrors, a silica optical fiber bundle based light transmitter, and 4 light diffusers for the final indoor delivery of the collected daylight. We analyzed the performance of the system and revealed the system efficiency and daylighting factor. All test methods follow the rule, NR PV601:2007-daylighting system, governed by Korea Energy Management Corporation.

초등학교 교실의 빛 환경 실측에 관한 연구

박경은(Park, Kyung-Eun),김준태(Kim, Jun-Tae) 한국교육시설학회 2002 敎育施設 Vol.9 No.5

Daylighting in educational environment is very important as it has an effect on students' performance as well as in their visual health. It is regarded as a good energy conservation method in saving energy used for lighting. This study conducted initial daylight measurements to analyze luminous environment in classrooms of Korean elementary school. The results indicated that the typical classroom had a reasonable level of daylight. However, it also found that the classroom had some problems of the uniformity of illuminance and the contrast of brightness of surfaces in the classroom. It is argued that daylighting design for school classroom should consider these aspects to make daylit classrooms ideal so as to provide comfortable visual environment.

Optical Characteristics and Applicability of a Fiber-optic Hybrid Daylighting System Exploiting Sunlight and Artificial Light

한현주,박진철,오승진 한국생태환경건축학회 2024 한국생태환경건축학회 논문집 Vol.24 No.2

Purpose: Using sunlight and artificial light for illuminating indoor spaces (dimlit areas) was studied by operating a fiber-optic hybrid daylighting system capable of delivering constant flux of visible light streams, which enables the implementation of constant lighting despite the variation in sunlight during daytime. Method: The system adds artificial light to a stream of sunlight when there is deficiency in sunlight to meet the target illuminance according to the feedback signal generated by the photo-sensor based control strategy developed in this work. The photometric characteristics of the mixed stream of sunlight and artificial light were analyzed and the applicability of the system was tested under actual operating conditions. Spectrum variations of light were measured and analyzed to investigate the validity of light mixing, i.e., hybrid daylighting. Besides its photometry, the control of illuminance in hybrid daylighting was explored by using a test cell on a clear and a partly cloudy day. Result: Results are presented in terms of photometric properties including spectral radiance and illuminance measured as appropriate. The mixing (adding) of artificial light to meet the target illuminance was quite successful and the illuminance remained close to the desired value within an allowable tolerance of ±3.5%.

Optical Fiber Daylighting System Combined with LED Lighting and CPV based on Stepped Thickness Waveguide for Indoor Lighting

부녹하이,신서용 한국광학회 2016 Current Optics and Photonics Vol.20 No.4

We present a design and optical simulation of a cost-effective hybrid daylighting/LED system composedof mixing sunlight and light-emitting diode (LED) illumination powered by renewable solar energy forindoor lighting. In this approach, the sunlight collected by the concentrator is split into visible andnon-visible rays by a beam splitter. The proposed sunlight collector consists of a Fresnel lens array. Thenon-visible rays are absorbed by the solar photovoltaic devices to provide electrical power for the LEDs. The visible rays passing through the beam splitters are coupled to a stepped thickness waveguide (STW)by tilted mirrors and confined by total internal reflection (TIR). LEDs are integrated at the end of theSTW to improve the lighting quality. LEDs’ light and sunlight are mixed in the waveguide and they arecoupled into an optical fiber bundle for indoor illumination. An optical sensor and lighting control systemare used to control the LED light flow to ensure that the total output flux for indoor lighting is a fixedvalue when the sunlight is inadequate. The daylighting capacity was modeled and simulated with acommercial ray tracing software (LighttoolsTM). Results show that the system can achieve 63.8% opticalefficiency at geometrical concentration ratio of 630. A required accuracy of sun tracking system achievedmore than ±0.5o. Therefore, our results provide an important breakthrough for the commercialization oflarge scale optical fiber daylighting systems that are faced with challenges related to high costs.