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http://dx.doi.org/10.5322/JESI.2018.27.6.359

Development of a Natural Ventilation Model in a Single Zone Building with Large Openings  

Cho, Seok-Ho (Department of Environmental Administration, Catholic University of Pusan)
Publication Information
Journal of Environmental Science International / v.27, no.6, 2018 , pp. 359-369 More about this Journal
Abstract
A model has been developed to predict natural ventilation in a single zone building with large openings. This study first presents pressure-based equations on natural ventilation, that include the combined effect of wind and thermal buoyancy. Moreover, the concept of neutral pressure level(NPL) is introduced to consider the two-way flow through a large opening. The total pressure differences across the opening and the NPL are calculated, and nonlinear equations are solved to find the zonal pressure to satisfy mass conservation. For this analysis, an iterative technique of successively approximating the zonal pressure is used. The results of applying this study model to several simple cases are as follows. When there is no wind and only the stack effect is caused, a one-way flow occurs in both the top and bottom openings in the case of two openings of equal-area, and a one-way flow occurs in the top opening; however, a two-way flow occurs in the bottom opening in the case of two openings of unequal-area. When there is a wind effect, regardless of whether the outside air temperature is lower or higher than the indoor air temperature, air flows into the room through the bottom opening and out of the room through the top opening. As the wind velocity increases, the wind effect appears to be more influential than the stack effect owing to the temperature difference.
Keywords
Natural ventilation; Single zone building; Neutral pressure level;
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  • Reference
1 Bangalee, M. Z. I., Lin, S. Y., Miau, J. J., 2012, Wind driven natural ventilation through multiple windows of a building: a computational approach, Energy and Building, 45, 317-325.   DOI
2 Chen, Q., Xu, W., 1998, A Zero-equation turbulence model for indoor airflow simulation, Energy and Building, 28, 137-144.   DOI
3 Cho, S. H., 2008, Development of an integrated multizone model for indoor air environment prediction, JES, 17(9), 993-1003.
4 Cho, S. H., 2014, Development of an infiltration and ventilation model for predicting airflow rates within buildings, JESI, 23(2), 207-218.
5 Choi, S. W., Evaluation of ventilation system performance using indoor air quality model, 1997, Kor. J. Env. Hlth. Soc., 23(4), 57-66.
6 Chung, K. C., 1996, Development and validation of a multizone model for overall indoor air environment prediction, HVAC&R Research, 2(4), 376-385.   DOI
7 Conte, S. D., De Boor, C., 1972, Elementary numerical analysis, an algorithmic approach, McGraw-Hill, 88.
8 Deru, M., Burns, P., 2003, Infiltration and natural ventilation model for whole-building energy simulation of residential buildings, NREL/CP-550-33698, 1-17.
9 Etheridge, D., Sandberg, M., 1996, Building ventilation: theory and measurement, Chichester: John Wiley and Sons. 5-40.
10 Feustel, H. E., Dieris, J., 1992, A Survey of airflow models for multizone structures, Energy and Building, 18, 79-100.   DOI
11 Li, Y., Delsante, A., 2001, Natural ventilation induced by combined wind and thermal forces, Building and Environment, 36, 59-71.   DOI
12 Li, Y., Delsante, A., Symons, J., 2000, Prediction of natural ventilation in buildings with large openings, Building and Environment, 35, 191-206.   DOI
13 Lin, J. T., Chuah, Y. K., 2011, A Study on the potential of natural ventilation and cooling for large spaces in subtropical climatic regions, Building and Environment, 46, 89-97.   DOI
14 No, S. T., Kim, K. S., 2005, A Study on the characteristics of natural airflow through single-sided openings with variable position and geometry, JAIK_PD, 21(8), 227-234.
15 Ohira, N., Yagawa, N., Gotoh, N., 1993, Development of a measurement system for multizone infiltration, ASHRAE Transactions, 99, 692-698.
16 Sherman, M. H., Grimsrud, D. T., 1980, Infiltration-pressurization correlation : Simplified physical modeling, ASHRAE Transaction, 86, 778-806.
17 Walker, C., Tan, G., Glicksman, L., 2011, Reduced-scale building model and numerical investigations to buoyancy-driven natural ventilation, Energy and Buildings, 43, 2404-2413.   DOI
18 Walton, G. N., 1984, A Computer algorithm for prediction infiltration and interoom airflows, ASHRAE Transactions, 90(1B), 601-610.
19 Walton, G. N., 1989, Airflow network models for element-based building airflow modeling, ASHRAE Transactions, 95(2), 611-620.
20 Zhai, Z., Mankibi, M. E., Zoubir, A., 2015, Review of natural ventilation models, Energy Procedia, 78, 2700-2705.   DOI
21 Swami, M. V., Chandra, S., 1988, Correlations for pressure distribution on buildings and calculation of natural-ventilation airflow, ASHRAE Transation, 94, 243-266.