A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of solar chimney inclination angle on space flow pattern and ventilation rate
AbstractThe solar chimney is a simple and practical idea that is applied to enhance space natural ventilation. The chimney could be vertical or inclined. The chimney inclination angle is an important parameter that greatly affects space flow pattern and ventilation rate.In the present study, the effect of chimney inclination angle on air change per hour and indoor flow pattern was numerically and analytically investigated. A numerical simulation using Ansys, a FEM-based code, was used to predict flow pattern. Then the results were compared with published experimental measurements. A FORTRAN program was developed to iteratively solve the mathematical model that was obtained through an overall energy balance on the solar chimney.The analytical results showed that an optimum air flow rate value was achieved when the chimney inclination is between 45° and 70° for latitude of 28.4°. The numerically predicted flow pattern inside the space supports this finding. Moreover, in the present study a correlation to predict the air change per hour was developed. The correlation was tested within a solar intensity greater than or equal to 500W/m2, and chimney width from 0.1m to 0.35m for different inclination angles with acceptable values.
Effect of solar chimney inclination angle on space flow pattern and ventilation rate
AbstractThe solar chimney is a simple and practical idea that is applied to enhance space natural ventilation. The chimney could be vertical or inclined. The chimney inclination angle is an important parameter that greatly affects space flow pattern and ventilation rate.In the present study, the effect of chimney inclination angle on air change per hour and indoor flow pattern was numerically and analytically investigated. A numerical simulation using Ansys, a FEM-based code, was used to predict flow pattern. Then the results were compared with published experimental measurements. A FORTRAN program was developed to iteratively solve the mathematical model that was obtained through an overall energy balance on the solar chimney.The analytical results showed that an optimum air flow rate value was achieved when the chimney inclination is between 45° and 70° for latitude of 28.4°. The numerically predicted flow pattern inside the space supports this finding. Moreover, in the present study a correlation to predict the air change per hour was developed. The correlation was tested within a solar intensity greater than or equal to 500W/m2, and chimney width from 0.1m to 0.35m for different inclination angles with acceptable values.
Effect of solar chimney inclination angle on space flow pattern and ventilation rate
Bassiouny, Ramadan (author) / Korah, Nader S.A. (author)
Energy and Buildings ; 41 ; 190-196
2008-08-30
7 pages
Article (Journal)
Electronic Resource
English
Solar chimney , Ventilation , ACH , CFD , Inclination angle
Effect of solar chimney inclination angle on space flow pattern and ventilation rate
| Online Contents | 2009
Effect of solar chimney inclination angle on space flow pattern and ventilation rate
| Online Contents | 2009
The effect of solar chimney layout on ventilation rate in buildings
| Online Contents | 2016
The effect of solar chimney layout on ventilation rate in buildings
| Elsevier | 2016
Solar chimney for enhanced stack ventilation
| Elsevier | 1993