ANALYSIS OF THE AIR FLOW IN SELECTED BUILDINGS

Airflow properties are most apparent adjacent to the surface of the building, because there take place any reactions between liquid and solid object. Air exchange rate is associated with air flow through a building by natural – through small openings and cracks in the structure. Due to leakages in the building construction, opening and closing of windows, the air in the building shifts. The value of air exchange rate is hard to predict and depend of several variables – wind speed, difference between outside and inside temperatures, the quality of the building construction. The paper analyzed the air flow in selected buildings and quantified the value of air pressure differences and the air exchange rate with the emphasis on specification of aerodynamic coefficients.

Full text (pdf)

[1] Amin, J. A., Ahuja, A. K. Effects of side ratio on wind-induced pressure distribution on rectangular buildings. Journal of Structures, 2013.

[2] Bielek M., Bielek B. Interakcia budova – vietor v teórii energetickej potreby budov, In: 6.vedecká konferencia Budova a energia 2005, Podbanské 12-14.10.2005, pp. 64–69.

[3] Bielek M., Bielek B. et al. Vplyv stavebných materiálov a konštrukcií na kvalitu života. Parametrizovanie energeticko-environmentálneho hodnotenia stavebných konštrukcií a budov. Aerodynamika budov pre kvantifikáciu ich prirodzeného vetrania. Bratislava: PROFING, spol.s.r.o., 2005.

[4] Bielek M., Černík, P., Tajmír, M.: Aerodynamika budov, Alfa, Bratislava, 1990.

[5] Holmes, J. D. Mean and fluctuating internal pressures induced by wind. Colorado: Proceedings of 5th international wind engineering conference, 1979.

[6] Kapalo P., Voznyak O. Experimental measurements of a carbon dioxide concentration for determining of a ventilation intensity in a room at pulsing mode. In: Czasopismo Inżynierii Lądowej, Środowiska i Architektury – Journal of Civil Engineering, Environment and Architecture, JCEEA (ISSN 2300-8903), t. XXXII, z. 62 (4/2015), p. 201–210, DOI:10.7862/rb.2015.189.

[7] STN EN 1991-1-4:2007, Eurokód 1. Zaťaženie konštrukcií. Časť 1-4. Všeobecné zaťaženia. Zaťaženie vetrom. Bratislava: Slovenský ústav technickej normalizácie, 2007.