Differences in the Design of Underfloor Air Cavities

Abstract:

Concepts of remedial treatments of historic buildings using ventilated floors, with a few exceptions, are with considerable popularity preferred by the representatives of monument protection. The fact that they require small interventions in the masonry is of great benefit for compliance with the methodology of cultural heritage protection, as is the fact that such interventions do not compromise the structural analysis of buildings. The materials used can be original (as is often remitted by the representatives of the monument protection), but for this purpose (covered parts) it is also possible to use modern materials or modern constructions. Currently, in our country with great popularity, special shaped units began to be used. When these methods should be given particular attention to the amount of air cavities design and deployment of the inlet and outlet openings, which is obviously problematic. In this article two different underfloor ventilation systems are compared using CFD simulation. To verify of accuracy of used simulations was carried out laboratory-experimental model.

• Periodical: Advanced Materials Research (Volume 969)
• Pages: 113-118
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.969.113
• Online since: June 2014
• Authors: Tomáš Renčko*, Anna Sedláková
• Keywords: CFD Simulation, Concrete Slab, Experiment, Shaped Unit, Underfloor Ventilation

References

[1] M. Benža et al: Folk architecture and urban planning of rural settlements in Slovakia. Academic Electronic Press, s. r. o. for National Conservation and Landscape Center, Slovak Republic, 1998, p.360. 80-88880-23-8.

[2] J. Lacika: 1000 religious monuments in Slovakia. The most beautiful religious buildings. Ikar, Slovakia, 2012, ISBN: 9788055128528.

[3] M. Björling, H. Stymne, C.A. Boman: The Indoor Climate of a Naturally Ventilated Church. Proceedings of Healthy Buildings 2009, USA, (2009).

[4] E. Arumägi, T. Kalamees, T. Broström: Indoor climate in a naturally ventilated unheated medieval church in Harju-Risti, Estonia. 10th REHVA World congress Clima, Turkey, (2010).

[5] A.S. Hussein, H. El-Shishiny: Influences of wind flow over heritage sites: a case study of the wind environment over the Giza Plateau in Egypt. Environ. Modell. Softw. 24 (3), 389-410, (2009).

DOI: 10.1016/j.envsoft.2008.08.002

[6] F. Monforti, R. Bellasio, R. Bianconi, G. Clai, G. Zanini: An evaluation of particle deposition fluxes to cultural heritage sites in Florence, Italy. Sci. Total Environ. 334-335, 61-72, (2004).

DOI: 10.1016/j.scitotenv.2004.04.030

[7] H. -J. Steeman, M. Van Belleghem, A. Janssens, M. De Paepe: Coupled simulation o heat and moisture transport in air and porous materials for the assessment of moisture related damage. Build. Environ. 44 (10), 2176-2184, (2009).

DOI: 10.1016/j.buildenv.2009.03.016

[8] M. Kalousek, O. Šikula: CFD simulation of ventilated air cavity. Building Simulation and Environmental Engineering 2008, 5. conference, Czech Republic, (2008).

[9] T. Renčko: Theoretically justified structural restoration of historic buildings. Dissertation work. Košice: Technical University in Košice, Civil Engineering Faculty, (2013).

[10] STN 73 0540-2. Thermal protection of buildings. Thermal performance of buildings and components. Part 2: Functional requirements. (2012).

[11] STN 73 0540-3. Thermal protection of buildings. Thermal performance of buildings and components. Part 3: Properties of environments and building products. (2012).

[12] STN EN ISO 13790/NA. Energy performance of buildings. Calculation of energy use for space heating and cooling (ISO 13790: 2008). National Annex. (2010).

DOI: 10.1016/j.enbuild.2006.06.007

[13] STN EN ISO 10211. Thermal bridges in building construction. Heat flows and surface temperatures. Detailed calculations. (2008).

DOI: 10.3403/30143206u

[14] ANSYS Inc. CFX 12. 1. Tutorials, Ansys CFX, Release 12. 1.