Numerical Investigation of a Novel Controlled-Temperature Double-Skin Façade (DSF) Building Element

Loucas Georgiou, Nicholas Afxentiou and Paris A. Fokaides ()
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Loucas Georgiou: School of Engineering, Frederick University, Nicosia 1036, Cyprus
Nicholas Afxentiou: School of Engineering, Frederick University, Nicosia 1036, Cyprus
Paris A. Fokaides: School of Engineering, Frederick University, Nicosia 1036, Cyprus

Energies, 2023, vol. 16, issue 4, 1-20

Abstract: This paper investigates a novel controlled-temperature double-skin façade (DSF) building element. A three-dimensional time-dependent numerical model was developed for six different geometries for the investigation of thermal performance under different orientations (azimuth 0°, 90°, 180° and 270°). The boundary conditions of the numerical model were determined with the PVGIS tool and adjusted with the sol-air temperature equation. The results of the numerical simulation were validated with the use of measurements from an experimental test cell. The numerical results indicated an improved thermal performance when temperature-controlled air and flow were supplied through the building envelope with annual total energy savings in kWh/m 2 of 1.99, 1.38, 2.13 and 2.06 for azimuth 0°, 90°, 180° and 270°, respectively. In regard to the total energy savings in %, the maximum benefit was considered to be in the winter season, with values of 65, 29, 80 and 28 for azimuth 0°, 90°, 180° and 270°, respectively. The experimental measurements revealed the test cell’s ability to maintain a relatively constant internal surface temperature and to not be significantly affected by the orientation and diverse ambient conditions.

Keywords: double-skin façade; heat flux; computational fluid dynamics; simulation; building; orientation; climatic conditions (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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