Performance evaluation of the BSRC multi-purpose bio-climatic roof

作者: J. Waewsak , J. Hirunlabh , J. Khedari , U.C. Shin

DOI: 10.1016/S0360-1323(03)00116-1

关键词: Air gap (plumbing)Thermal comfortSolar gainRoofThermalOverheating (electricity)Structural engineeringNatural ventilationIlluminanceEnvironmental science

摘要: Abstract This paper reports on experimental investigation of the performance a new multi-purpose bio-climatic roof (BCR) developed by our teamwork (The Building Scientific Research Center, BSRC). The innovative functions this BSRC-BCR are to decrease daily heat gain through fabrics, induce significant air ventilation rate, which improves thermal comfort residents, ensure appropriate daylighting without any overheating and act as radiator during nighttime. is composed combination CPAC Monier concrete transparent acrylic tiles outer side, gap another gypsum with an aluminum foil board translucent sheets room side. visual performances BCR were investigated experimentally compared conventional solar collector (RSC) based following three important parameters: temperature difference index (TD) defined between outdoor indoor, change number (ACH) induced amount indoor illumination. To end, two units (BCR RSC) each 1×1.5 m 2 surface area integrated into south-facing center single-room house 25 3 volume. results show that extremely interesting it can reduce significantly, provide sufficient natural lighting for housing high improve comfort. TD was always lower or close neutral than RSC hottest period day. illuminance delivered about 300 140 lx in summer winter, respectively. ACH 13–14 5–7 respectively, times RSC.

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