Stack effect analysis in opaque ventilated facades using induced mass flow correlations. Application to the dimensioning of the chamber width
DOI:
https://doi.org/10.3989/ic.13.155Keywords:
Ventilated facades, stack effect, CFD, induced mass flowAbstract
A general analysis of the stack effect problem applied to opaque ventilated facades is made in this paper. From an energetic point of view, the design and optimization of ventilated facades, require a deep understanding of the thermal and fluid dynamic phenomena that take place in the air gap, and, due to the complexity of these phenomena, the optimal design is a challenge to architects and engineers. As a main result, useful correlations for calculating the induced mass flow into the ventilated cavity are proposed depending on the geometry and the temperature difference. The set of application of the correlation covers the usual range of interest in opaque ventilated facades. It is also made a sensitive analysis of the induced flow with the indicated parameters.
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