Application of the chimney cap as a method of improving the effectiveness of natural ventilation in buildings

• Autorzy: Antczak-Jarząbska Romana , Niedostatkiewicz Maciej

Identyfikatory

DOI

10.2478/pomr-2020-0058

• Języki publikacji: EN

Abstrakty

EN

Adequately designed natural ventilation is the cheapest and easiest way to effectively remove indoor pollutants and keep the air inside a building fresh. A prediction of the performance and effectiveness of ventilation in order to determine the design of a ventilation system can provide real and long-term cost savings. The worst time in terms of the efficiency of natural ventilation is the spring-autumn transition period [7]. In order to improve the efficiency of natural ventilation, chimney caps are used, among others. They are designed to improve the chimney effect described in colloquial language as a chimney draft. The chimney effect is a physical phenomenon of the formation of a spontaneous flow of a warmer gas, e.g. air, from the bottom up in stem channels [12]. The article analyses the influence of the chimney cowl on the improvement of the chimney effect in an apartment of a multi-family building with natural ventilation. Long-term tests of the chimney draft were carried out for the case without and with a chimney cap. The paper presents the results of the performance (air change rate, ACH) of natural ventilation for a building with an inlet gap measured for the transitional season (between the heating and the summer season). The measurements were performed during a windy period.

Słowa kluczowe

EN

natural ventilation; chimney cap; ACH; wind effect; effectiveness

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2020
• Tom: nr 3
• Strony: 168--175
• Opis fizyczny: Bibliogr. 19 poz., rys., tab.

Twórcy

autor

Antczak-Jarząbska Romana

• Gdańsk University of Technology, 11/12 Gabriela Narutowicza Street, 80-233 Gdańsk, Poland

autor

Niedostatkiewicz Maciej

• Gdańsk University of Technology, 11/12 Gabriela Narutowicza Street, 80-233 Gdańsk, Poland

Bibliografia

• 1. Awbi H. (1991):Ventilation of buildings, Chapman & Hall.
• 2. Awbi H., Gan G. (1992): Simulation of solar induced ventilation, Second World Renewable Energy Congress, vol. 4, Solar and Low Energy Architecture, September 1992, Pergamon Press, Oxford.
• 3. Axley J. (1998): Introduction to the design of natural ventilation system loopequation, Proc. 19th AIVC Conf. Ventilation Technologies Urban Areas, 47‒56.
• 4. Bülow-Hübe H. (2001): Energy-Efficient Window Systems. Doctoral Dissertation. ISSN 1103-4467. Lund University, Lund Institute of Technology, Lund.
• 5. Cao G., Awbi H., Yan R., Fan Y., Siren K., Kosonen R., Zhang J. (2014): A review of the performance of different ventilation and airflow distribution systems in buildings. Buildings and Environment, 73, 171‒186.
• 6. Clarke D. (2001): A breath of fresh air. Hospital Development, 32(11), 13‒17.
• 7. FitzgeraldS.D., Woods A.W.(2008): The influence of stacks on flow patterns and stratification associated with natural ventilation.Energy and Buildings, 43, 1719‒1733.
• 8. Gładyszewska-Fiedoruk K., Gajewski A. (2012): Effect of wind on stack ventilation performance. Energy and Buildings, 51, 242‒247.
• 9. Jarząbska-Antczak R., Niedostatkiewicz M. (2017): Design and diagnostics of gravitational ventilation. Selected problems.
• 10. Polskie Centrum Budownictwa Difin i Muller sp. z o.o., 1‒80, Warszawa.
• 11. Krishan A. (2001): Climate responsive architecture: a design handbook for energy efficient buildings, Tata McGraw-Hill, New York.
• 12. LBNL (2007):Energy Plus Engineering Reference, November 6, 2007, pp. 384 and 381.
• 13. Nazaroff W. W. (2008): Inhalation intake fraction of pollutants from episodic indoor emissions. Building and Environment, 43(3), 269‒277.
• 14. Novoselac A., Srebric J. (2003): Comparison of air exchange efficiency and contaminant removal effectiveness as IAQ indices. ASHRAE Trans., 109, 339‒349.
• 15. Okisalo J., Kurnitski J., Korpi M., Kalamees T., Vinha J.(2009): Building leakage, infiltration, and energy performance analyses for Finnish detached houses. Building and Environment, 44, 377‒387.
• 16. Roos A. (1998): The air exchange efficiency of the desk displacement ventilation concept-Theory, measurements and simulations, Proc. Roomvent’98, vol.1, pp.249‒256, Stockholm, Sweden.
• 17. Sandberg M. (1981): What is ventilation efficiency? Building and Environment, 16, 123‒135.
• 18. PN-83/B-03430 (including revision A3:2000). Ventilation in collective dwelling places and public buildings – requirements, (in Polish).
• 19. LAB-EL Elektronika Laboratoryjna s.j. Available from www.label.pl.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).