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
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