Analysis on the optimization geometry of the solar chimney power plant systems

An Spanish solar chimney power plant was considered as a prototype to establish a numerical simulation in this paper,and the distribution of velocity,pressure and temperature fields in the solar chimney were derived;Thereby the impact of changing of geometric factors,which included the slope of the collector shed,the height and radians of the shunt board and so on,on the system power performance and the location of turbine were studied.Research results showed that,as the slope of the collector shed beginning to increase,the drawing action of the chimney increased and the velocity of air enhanced,which would help to improve the generator output of solar chimney;When the collector shed gradient increased to about 0.5 degrees,the strengthening of chimney drawing was the most obvious,which was the most advantageous for improving the system's power generation performance;The airflow power station performed better while increasing the number of manifold;When the manifold height was slightly higher than that of the collector shed,the system performed well;The slighter the curvature of manifold,the better the system presented.The slope of the collector shed affects location of the turbine,but the turbine position does not change with the geometric factors of manifold.