DOI: 10.5593/SGEM2016/B62/S27.065


G.Nastase, A.Serban, G. Dragomir, A. Brezeanu
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-69-8 / ISSN 1314-2704, June 28 - July 6, 2016, Book6 Vol. 2, 493-500 pp

Energy efficiency in office buildings is the general framework in this paper and glass double-skin façade is a passive solar system, which is so to say, in a way, the successor to early ventilated facades, Trombe wall system. The major difference between the two systems is that the massive wall from Trombe wall is replaced with a modern window that has good thermotechnical features. This cancels taking an extra space for access to natural light, as in the case of Trombe wall, allowing double glass facades to be used as an overall system, both with facade architectural role and the role of passive solar system plus all others benefits it brings which will be detailed in this paper. The study was selected to illustrate the potential benefits of double-skin façade carefully combined with mechanical and natural ventilation technology and investigation of thermal performance of such system in order to reduce energy consumption in office buildings by exploiting solar contributions. The experimental results shown in this paper are from a model of a double-skin façade (DSF) developed in situ, on the ground floor of the Building Faculty in Brasov, part of Transylvania University from Brasov, on the south façade of the building. The measurements were performed during actual operating conditions. The experimental model consists of a so called ”box window” type double-skin façade, indoor air curtain, forced air circulation in summer and venetian blinds shading system, placed inside the cavity, in the median area. The model and adjacent experimental room are equipped with temperature thermocouples placed in relevant points for thermal behavior evaluation, air velocity sensors, thermo-hygrometers, CO2 sensors, portable pyrometer and portable light intensity meter.

Keywords: box double-skin facade, heat transfer, experimental results