• Title, Summary, Keyword: 이중외피

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A Study on Analysis Method for Performance Evaluation of Double-leaf facade of Office Building (업무용 건물의 이중외피 성능평가를 위한 해석기법의 고찰 - 이중외피 설계안의 에너지 저감 성능 및 환기성능을 중심으로 -)

  • Chung, Hwan-Kyo;Chung, Kwang-Seop;Lee, Yong-Jun;Shin, Seung-Chul;Kim, Young-Il
    • Journal of Energy Engineering
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    • v.21 no.2
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    • pp.168-178
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    • 2012
  • The objective of this study is applied to office buildings to evaluate quantitative evaluation method about performance of double-skin at design stage to establish the basis for the purpose of evaluation performance. Select the evaluation building about design plan for applying the double-skin using the dynamic heat load analysis program the annual heating and cooling load of before and after the double-skin. Using CFD to analyze wind factor and applied ventilation for realistic results. Effects of double-skin to apply, and control techniques that can be done more realistically proposed through to set and control for shade control mode of ventilator and inside cavity wall of double-skin. Apply for the building the double-skin due to interpretation of the annual heating and cooling loads applied to interpret the quantitative effect confirmed the possibility. According to the form of a double skin was confirmed cavity environmental changes.

A Study on Fire Features of Double-Skin Facade Structure by Using Fire Simulation (FDS) (화재 시뮬레이션(FDS)을 이용한 이중외피 구조의 화재 특성에 관한 연구)

  • Gu, Seon-Hwan;Kim, Hyun-Ho;Song, Young-Joo
    • Fire Science and Engineering
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    • v.28 no.1
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    • pp.1-11
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    • 2014
  • This study aims to address the fire characteristics of Double-skin facade using the Fire Dynamics Simulator (FDS). To end this, Double-skin facade was classified into the four structures, that is Box, Shaft-box, Corridor, Multistory, through PyroSim program which was based on FDS, and further each structure of fire characteristics were analyzed numerically as well as comparatively in the current study. This study also examined smoke movement, smoke density, smoke detectors, and visibility in order to closely identify the each structure of fire characteristics. The results of the study discovered that the Box structure did not significantly affect smoke which was rising in the other rooms, except for the fire room whereas the Corridor structure had positive effects on Double-skin facade horizontally. In addition, the Shaft-box structure showed the fastest vertical movement by means of the shaft, on the other hand, rising smoke influenced the other rooms as well. The Multistory structure along with rising smoke had a great impact on the other divided rooms in a vertical way.

Performance Assessment of Building Envelopes I: Double Skin Facade (외피 친환경 성능평가 I: 이중외피)

  • Kim, Deuk-Woo;Park, Cheol-Soo
    • 한국태양에너지학회:학술대회논문집
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    • pp.77-82
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    • 2009
  • Many countries have been interested in sustainable development of buildings for environmental preservation. Thus it is significant to assess building envelopes in terms of $CO_2$ emissions owing to Kyoto Protocol. In this paper, a Double Skin Facade(DSF) installed in a general office building was assessed by $CO_2$ emissions(one of the performance-based assessment). To predict $CO_2$ emissions caused by the building energy consumption, the dynamic simulation program(Energy Plus) and $CO_2$ emission factor was used. Because DSF has various airflow regimes, pre-simulation runs were conducted to decide proximate optimal airflow regimes depending on seasonal variation. It is shown that the DSF can achieve 17.1-36.5% of annual energy savings.

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Study Improvement of the Evacuation Performance in a Double-Skin Structure (이중외피 구조 건축물의 피난성능 개선에 관한 연구)

  • Gu, Seon-Hwan;Song, Young-Joo
    • Fire Science and Engineering
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    • v.31 no.1
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    • pp.98-107
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    • 2017
  • This study examined an effective way of measuring the evacuation performance in buildings, which are applied to a double skin facade through an evaluation of the escape safety. Buildings with a double skin facade appeared to have a faster combustion expansion speed for the upper floor if a fire occurs. Moreover, a double skin facade is more difficult to escape safely than a general building construction because of the limited design standards. Accordingly, this study suggested virtual modeling including single emergency stairs and alarm systems considering the risk in each structure of buildings. These results showed that box-type double skin, corridor access type, shaft-box type, and multistory facade systems showed a 26.4%, 29.1%, 23.4%, and 26.3% increase in evacuation performance, respectively, as well as securing the safety of occupants.

Indoor Airflow of High-Rise Apartment with Different Types of Box-Windows (초고층 공동주택의 이중외피 창호 유형별 실내기류 특성 비교)

  • Choi, Tae-Hwoan;Jeon, Mi-Sook;Lee, Jung-Hyun;Kim, Tae-Yeon;Leigh, Seung-Bok
    • Proceedings of the SAREK Conference
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    • pp.993-998
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    • 2006
  • High-rise apartments have a problem using natural ventilation because of the strong outdoor wind velocity. Conventional high-rise apartments have adopted mechanical ventilation systems to maintain the indoor air quality. However, it leads to the overuse of electricity and the sick house syndrome. Double-skin facade is the alternative for the high-rise building to use natural ventilation and this study is focused on the performance of the box-window, which is a kind of double-skin facades. Indoor wind velocity and HCHO concentrations are analyzed with three types of box-windows: the diagonal type, parallel type and perpendicular type. The airflow is simulated by computational fluid dynamics program. Box-windows reduce the maximum value of indoor wind velocity about 50% compared with the single window and the HCHO concentrations do not have the big difference. Box-windows could be the alternative to enhance the use of the natural ventilation and indoor air quality of the high-rise apartment.

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The Analysis on the Variation of the Ventilation Rates by Wind Pressure and Temperature Difference between Indoor and Outdoor in the Multi-Story Type Double Skin Facade applied to the Office Building (오피스 건물에 적용된 다층형 이중외피의 풍압과 실내·외 온도차에 의한 환기량 변화 분석)

  • Song, Chi-Ho;Kim, Teayeon;Leigh, Seung-Bok
    • KIEAE Journal
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    • v.15 no.2
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    • pp.123-131
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    • 2015
  • Purpose : Improvement of indoor thermal comfort and reduction of the energy consumption in building can be obtained by applying a double skin facade system. In order to achieve effectively this purpose, design team would have to perform easy and appropriate performance analysis for making better design decision during the design process. Method : This paper focus on the natural ventilation performance of a multi-story type double skin facade with main causes which are pressure difference according to the wind and temperature difference between indoor and outdoor (Buoyancy Effect). Using this main causes, the natural ventilation ratio of wind effect-to-buoyancy effect in cavity of multi-story type double skin facade were analyzed through the performance analysis results of CFD (Computational Fluid Dynamics) simulation. Result : When the wind velocity was 2m/s, the ventilation rate in the cavity was highest. If wind velocity was slower than 2m/s wind velocity, buoyancy effect has more influence on the ventilation rate in the cavity, and if wind velocity was faster than 2m/s wind velocity, wind effect has more influence on the ventilation rate in the cavity.

A Study on the Evaluation of Sound Insulation Performance of Double Skin Facade -Focus on the Multi-story type of Double Skin Facade- (이중외피시스템의 차음성능 평가에 관한 연구 -전면형 이중외피시스템을 중심으로-)

  • 석호태;차민철
    • Journal of the Korean housing association
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    • v.15 no.2
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    • pp.11-18
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    • 2004
  • The purpose of this study is to evaluate the sound insulation performance and present fundamental data for sound insulation plan about open and close windows of inner facade and outer facade of Double-skin Facade system applied to multi-story type. The Headquarter of Green Building and the Energy Saving Building in the Korea Institute of Energy Research was selected for experiment. Measurement method which are specified in the Korea Standard 2235 were selected for this study. As the result of this study, 1) Sound insulation performance of Multi-layer type of Double-skin Facades is very excellent about outdoor noise. 2) Vertical level is higher, it shows that more decreases sound pressure level.

Analysis of the Thermal Environment and Natural Ventilation for the Energy Performance Evaluation of the Double Skin System during the Summer (이중외피 시스템의 에너지성능평가를 위한 하절기 열환경 및 자연환기 분석)

  • Eom, Jung-Won;Cho, Soo;Huh, Jung-Ho
    • Journal of the Korean Solar Energy Society
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    • v.22 no.4
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    • pp.68-76
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    • 2002
  • This paper discusses thermal and ventilation performance which might be caused by the adoption of one of specific building facade techniques, Double Skin System(DSS). One building with a prototypical DSS was selected and systematically investigated through field monitoring and computer simulation techniques. A network model of ventilation was successfully made using COMIS to evaluate ventilation performance of the system which can hardly be done by field measurements. Various operating conditions of air conditioning on/off and window opening were implemented in this type of building. Through the appropriate operation of the DSS in summer, simulation-based and experimental results implicate that it can lead to cooling energy savings.

Analysis for Seasonal Operation Performance of Multistory Facade (전면형 이중외피의 절기별 운용성능 분석)

  • Im, Hye-Jin;Cho, Soo;Sung, Uk-Ju;Lim, Sang-Hun;Haan, Chan-Hun
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.24 no.2
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    • pp.111-120
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    • 2012
  • In this study, to present the data in the internal thermal condition of Double skin facade were measured internal temperature and inlet and outlet openings wind speed of double skin facade. Measurements were similar to temperatures in the upper double skin facade. Especially in summer, temperature stratification is through to be unfulfilled seamlessly despite inlet and outlet openings open. Double skin facade inlet and outlet openings of the air flow rate was slower outlet openings of the air flow rate than inlet openings of the air flow rate.

A Study on the Performance of Blind type Double-Skin Facade System with PV modules (PV 모듈을 부착한 블라인드형 이중외피 시스템의 성능에 관한 연구)

  • Jo, Hye-Jin;Choi, Chang-Ho;Lee, Hyun-Woo
    • Journal of the Korean Solar Energy Society
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    • v.25 no.1
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    • pp.57-64
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    • 2005
  • The present society have been polluted the earth environment by the rapid industrial growth. So, the meaning of sustainable development is doing more important. Therefore the technology skills of sustainable architecture techniques have been studied many-side of energy as like energy saving and substitutive energy. But, See the studies until now, there have been just one system either energy saving or substitutive energy. So, the paper studies about energy saving system with substitutive energy system(the double-skin facade system with PV modules) and presents the performance of system through the analysis of reduction of the energy load, the solar radiation on the slope angle of PV module, the blind effect in system.