Inverse design method of wind turbine in solar chimney power plants coupled with geothermal energy

Abstract

A solar chimney power plant has been analysed in this paper by two numerical studies. Firstly we are interested on the wind turbine blades by proposing an approach in perfect fluid model for design. In the case of wind turbine, the tridimensional design is performed by either of the two steps S2 (meridional flow) or S1 (blade-to-blade flow) approach. In this model, a set of governing equations is derived from continuity and momentum equations for the three-dimensional rotational steady flow relative to the wind turbine. The blade geometry is determined according to a specified blade bound circulation distribution by iterative computation. S2 step leads to the determination of axisymmetrical stream sheets as well as the approximate camber surface of the blades. In the S1 step, the inverse problem concerning blade-to-blade flow for wind turbine is carried out. Secondly a numerical simulation has been performed to analyse the characteristics of heat transfer and air flow in the solar chimney power plant system at night (absence of solar radiations). So the production of solar chimney power plant on a continuous, 24, h basis is possible by applying geothermal energy.