Study Effect of chimney height on the power output of the Solar Chimney System

Abstract

For the performance evaluation of a solar chimney power plant (SCPP) with and without heat storage, a full theoretical model has been developed, which has been verified by experimental data from the Spanish prototype and experimental data from a small solar chimney pilot. The experiment was performed at the Sabratha College of Engineering. This model takes into account the effects of heat flux and heat loss, as well as the rates of temperature drop inside and outside the chimney. There was good agreement between these results and those of the mathematical model. Hence, the model can be used to analyze solar chimney systems. In this paper, the effect of the chimney height by convection, which avoids negative buoyancy in the latter chimney, and the optimal height of the chimney for maximum performance are presented and analyzed. Under unloaded conditions, it has been reported that the theoretical power output of an SCPP is directly proportional to the height of the chimney. and the output power increases as the chimney height increases, but the rate of increase should be compared to the cost of building a very high chimney.