ZEMCH 2015 - International Conference Proceedings | Page 605

International Conference | Bari - Lecce, Italy Session VIII A STUDY ON THE SIMULATION PERFORMANCE OF PV DOUBLE SKIN FACADE (PV DSF) JiSuk Yu1, SangMyung Kim2, JinHee Kim3 & JunTae Kim4 1 Dept. of Energy System Engineering, Kongju National University, Korea, [email protected] 2 Dept. of Architecture Engineering, Kongju National University, Korea, [email protected] 3 Green Energy Technology Research Center, Kongju National University, Korea, [email protected] 4 Dept. of Energy System Engineering, Kongju National University, Korea, [email protected] Abstract Recently, efforts to reduce cooling and heating loads in buildings are increasing globally. One of methods to reduce cooling and heating loads is DSF (double skin façade). Double skin façade provides thermal buffer zone which prevent outside air from reaching surface of building directly due to extra skin to external wall. Also, stack effect by natural ventilation occurs in air-space between double skin and building; thus reducing the building’s cooling load by this effect which decreases temperature inside double skin. Generally double skin consists of clear glass. If PV is applied in spandrel portion of extra wall, air temperature inside the double skin is increased by heat from the backside of PV. Consequently, cooling air flow occurs easily by opening top and bottom vents of double skin. This air circulation promotes release of heated air inside double skin; improving cooling and temperature reduction effects in buildings. In addition, PV power generation will be increased. With this background, the purpose of this study was to investigate the thermal performance and PV power generation of double skin façade integrated with PV; using TRNSYS transient energy simulation program. As a result, temperatures of both the external wall and cavity for the PV DSF, compared to the DSF, were lower by 2°C or less. This indicates that the integration of PV in building facades allows greater gain of solar radiation and reduces the PV temperature rise. Keywords Double skin façade, PV, stack effect, TRNSYS, Building energy 603