Impact of VIP Envelope Reflectance on the Performance of Curtain Wall System
Curtain wall is one of the most recognizable components of todays building.Despite the benefits of increased speed and quality of construction,improved day lighting and aesthetics,among others,glass curtain walls increase the energy demand for thermal comfort.Curtain wall systems composed of various glazed and spandrel configurations offer alternative solutions.Insulating the spandrel area minimizes heat losses or gains.Vacuum insulation panel (VIP) enables slim wall constructions with high performance.Furthermore,VIPs highly polished surface offers potential to reduce heat gain by restricting radiative heat transfer.The objective of this study is to investigate the thermal reflectance characteristics of integrated VIP spandrels on the performance of curtain wall system during peak cooling season.A prototype baseline building was modelled with southern facade installed curtain wall system with VIP spandrel.Primarily,due to the surface reflectance properties of the VIPs highly polished envelope,the VIP spandrel area reduced solar hest gain by about 3~4magnitude as compared to the solar hest transmitted through the glazing area,during summer season.Sensible cooling energy demand surged for different curtain wall configurations.
vacuum insulation panel VIP curtain wall system VIP spandrel thermal reflectance radiative heat transfer
Fred Edmond Boafo Jun-Tae Kim Jong-Gwon Ahn Jin-Hee Kim
Zero Energy Buildings Lab., Dept.of Energy Systems Engineering, Kongju National University, Cheonan, Green Energy Technology Research Center, Kongju National University, Cheonan, Korea
国际会议
The 12th International Vacuum Insulation Symposium (IVIS 2015)(第十二届国际真空绝热材料会议)
南京
英文
158-163
2015-09-01（万方平台首次上网日期，不代表论文的发表时间）