THERMAL SCIENCE

International Scientific Journal

Lenin Vadugapalayam Rangasamy

,

Sivalakshmi Sivanathan

,

Raja Muthu

EXPERIMENTAL INVESTIGATION ON SINGLE-SIDED TRANSIENT NATURAL VENTILATION DRIVEN BY BUOYANCY

ABSTRACT
Energy consumption in building sector plays a major role in hot climate for space cooling. In this view of equipment energy consumption reduction on building space cooling, top vent and window operation-based natural ventilation model is developed in reduced scale. In this study, the performance of rectangular top vent arrangement along with window opening configuration with respect to temperature distribution and air flow pattern is investigated experimentally. The results depicted that the heat generated from the indoor element with vent and window opening configuration showed a greater influence in vertical temperature difference. For both the case of window opened and closed with vent, the time taken to attain the steady-state is shorter for larger vent compared to smaller vent. Increasing the top vent area reduces the indoor air temperature at various levels. When windows in open condition, there is significant reduction in indoor air temperature up to window level for all vent areas. Air flow pattern of the in-door air is validated through smoke visualization test.
KEYWORDS
thermal buoyancy, top vent, transient natural ventilation, window configuration, smoke visualization
PAPER SUBMITTED: 2017-05-16
PAPER REVISED: 2017-07-07
PAPER ACCEPTED: 2017-08-01
PUBLISHED ONLINE: 2017-12-16
DOI REFERENCE: https://doi.org/10.2298/TSCI17S2489V
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Supplement 2, PAGES [S489 - S496]
REFERENCES
  1. Wang, H., et al., Modeling of the Impact of Different Window Types on Single-Sided Natural Ventila-tion, Energy Procedia, 78 (2015), 1, pp. 1549-1555
  2. Grabe, J., von, et al., Window Ventilation Efficiency in the Case of Buoyancy Ventilation, Energy and Buildings, 72 (2014), 1, pp. 203-211
  3. Wang, J., et al., Assessment of Single-Sided Natural Ventilation Driven by Buoyancy Forces through Variable Window Configurations, Energy and Buildings, 139 (2017), 1, pp. 762-779
  4. Bayoumi, M., Impacts of Window Opening Grade on Improving the Energy Efficiency of a Façade in Hot Climates, Building and Environment, 119 (2017), 1, pp. 31-43
  5. Elshafei, G., et al., Numerical and Experimental Investigations of the Impacts of Window Parameters on Indoor Natural Ventilation in a Residential Building, Energy and Buildings, 141 (2017), 1, pp. 321-332
  6. Allocca, C., et al., Design Analysis of Single-Sided Natural Ventilation, Energy and Buildings, 35 (2003), 1, pp. 785-795
  7. Tanny, J., et al., Airflow and Heat Flux through the Vertical Opening of Buoyancy-Induced Naturally Ventilated Enclosures, Energy and Buildings, 40 (2008), 1, pp. 637-646
  8. Favarolo, P. A., et al., Temperature-Driven Single-Sided Ventilation through a Large Rectangular Open-ing, Building and Environment, 40 (2005), 1, pp. 689-699
  9. Kalliomaki, P., et al., Airflow Patterns through Single Hinged and Sliding Doors in Hospital Isolation Rooms - Effect of Ventilation, Flow Differential and Passage, Building and Environment, 107 (2016), 1, pp. 154-168
  10. Caciolo, M., et al., Full Scale Experimental Study of Single-Sided Ventilation: Analysis of Stack and Wind Effects, Energy and Buildings, 43 (2011), 1, pp. 1765-1773
  11. Walker, C., et al., Reduced-Scale Building Model and Numerical Investigations to Buoyancy-Driven Natural Ventilation, Energy and Buildings, 43 (2011), 1, pp. 2404-2413
  12. Yang, X., et al., Experimental Investigation on Transient Natural Ventilation Driven by Thermal Buoy-ancy, Building and Environment, 77 (2014), 1, pp. 29-39
  13. Yang, X., et al., Numerical Investigation on the Airflow Characteristics and Thermal Comfort in Buoy-ancy-Driven Natural Ventilation Rooms, Energy and Buildings, 109 (2015), 1, pp. 255-266
  14. Esfeh, M. K., et al., Visualized Flow Structure around and inside of One-Sided Wind-Catchers, Energy and Buildings, 55 (2012), 1, pp. 545-552
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EXPERIMENTAL INVESTIGATION ON SINGLE-SIDED TRANSIENT NATURAL VENTILATION DRIVEN BY BUOYANCY

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence