CFD Study of Diffuse Ceiling Ventilation through Perforated Ceiling Panels

Alessandro Nocente, Tufan Arslan, Steinar Grynning and Francesco Goia
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Alessandro Nocente: Sintef Community, 7465 Trondheim, Norway
Tufan Arslan: IT Department, Scientific Computing Section, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
Steinar Grynning: Sintef Community, 7465 Trondheim, Norway
Francesco Goia: Department of Architecture and Technology, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway

Energies, 2020, vol. 13, issue 8, 1-14

Abstract: Diffuse Ceiling Ventilation (DCV) is a promising concept to address internal air quality and thermal comfort requirements in contemporary buildings. Sound-absorbing perforated ceiling panels are common in office rooms and can be used as air diffusers without modifications. The optimization of such systems is not a trivial procedure, and numerical simulation can represent an important tool to carry out this task. Today, most of the numerical studies on DCV are performed using porous medium models and focus on the general system performance rather than on the optimization of the diffuser design. In previous studies, a CFD model was used to optimize the size and distribution of the ceiling perforation. In the study presented in this paper, the results of simulations conducted on a full-scale three-dimensional domain and the performance comparison between a continuous and non-continuous perforation distribution are given. The results show that the non-continuous diffuser design does not disturb the internal comfort and does not introduce a negative effect in the system performance. The different configurations lead to a different air distribution in the room, but in both cases, the velocity magnitude is always well below values leading to draft discomfort.

Keywords: Diffuse Ceiling Ventilation (DCV); CFD; ceiling panels; comfort (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: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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