• Title, Summary, Keyword: Slat-Type Blind

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An Analytical Study on Indoor Thermal Comfort Performance According to the Automatic Control of Internal-External Blind

  • Lee, Do-Hyung;Kim, Tae-Woo;Yoon, Jong-Ho
    • KIEAE Journal
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    • v.14 no.3
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    • pp.31-38
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    • 2014
  • The purpose of this study is to analyse PMV (Predicted Mean Vote) and PPD (Predicted Percentage of dissatisfied) by automatic control of slat-type vertical blind. EnergyPlus, a building energy analysis software has been used for this study. The energy model is calibrated in Energy Plus using measured zone temperature and glass surface temperature data for one day and thermal comfort performance inside the building analysis was carried out. The calibrated data has the MBE of 4% and Cv(RMSE) of 10%. The result was that, for better zone thermal comfort, installation of blind on the outside is more appropriate than inside or no blind case. Additionally, different glazing types were compared and it was found that Triple Low-e glass is the most favorable.

An Evaluating of Daylighting Performance by Venetian Blind Shapes Type Change - Centre on Radiance Program (베네치안 블라인드 슬랫각도 형태변화에 따른 주광성능에 관한 연구 - Radiance Program 중심으로)

  • Lim, Tae Sub;Park, Jong Myung;Lim, Jung Hee;Kim, Byung Seon
    • KIEAE Journal
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    • v.13 no.5
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    • pp.59-66
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    • 2013
  • Current Architectural Facade Designs have been trending to increased glass areas resulting in increasing impact on interior lighting and daylighting. In regards to indoor environmental quality, the increase in window space has a large impact on the daylighting received which ultimately impacts the liveability of a space. Especially when considering seasons, in the summer, excessive daylighting can result in glare as well as put an increased load in conditioning the air space further reducing energy efficiency. As a result, in order to improve the sustainability performance of a building, it is important to limit the natural lighting exposure to properly meet the needs and conditions of the building occupants. One of the most representative features to limit excessive sunlight exposure, is to incorporate operable blind systems. To this end, this research has been based on simulations performance through the Radiance Program. Radiance is capable of analyzing performance of daylight and impact of sunlight. Through analysis of different slat angles and blind shapes, impact and minimization of energy usage was evaluated. Furthermore, seasonal analysis was performed in order to understand the effects of seasonal climate factors. Ultimately this research provides an analysis of operable blinds optimization and effects of blind shape, control factors and angle of shading.

Optimum Automated Control Strategies of Inside Slat-type Blind considering Visual Comport and Building Energy Performance (재실자의 시쾌적과 건물에너지성능을 고려한 슬랫형 블라인드 자동제어전략)

  • Oh, Myung-Hwan;Yoon, Jong-Ho;Shin, U-Cheol
    • 한국태양에너지학회:학술대회논문집
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    • pp.187-195
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    • 2011
  • Glass Envelope is vulnerable to insulation performance and controling solar radiation. Insulation performance is consistently improving these days due to recent building energy saving policy in South Korea. However, solar control at glass envelope is still limited to meeting requirements of ideal high performance. Generally, Inside Blind plays an important role of solar control instead of glass which have a characteristics of transmitted solar. Unfortunately, most of them are controled by occupants and which method is not resonable in building energy. Therefore, achieving the high efficient performance building, automated control blind system considering reduction of building loads have to be adopted. Furthermore, considering occupants visual comport about removing discomfort glare is also essential.

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