HOT-BOX TESTS FOR BUILDING ENVELOPECONDENSATION ASSESSMENT

摘要

A common architectural feature of curtain wall facades is constituted by a transparent double-glazing unitrnmounted in front of a recessed interior metal panel. It is typically installed in spandrel areas, where it’s requiredrnto provide to the fa?ade not only surface consistency but also depth.rnTo evaluate condensation risk on this type of envelope element, an experimental program has being carried outrnon a typical fa?ade panel (Shadow-box) provided by Permasteelisa. The specimen performances wererninvestigated using a guarded hot-box and an extensive 3-dimensional temperature monitoring has been carriedrnout under various steady-state winter conditions. The temperature on the glazing and surrounding frames hasrnbeen compared to the dew-point temperatures. Particular emphasis has been given to the pressure equalizationrnbetween the outdoor environment and the inner space of shadow-box. Moreover the applicability of therntemperature factor, proposed in European Standards, is also investigated as condensation risk indicator on wallrninternal surface.