Analysis of Flows Modelling and Energy Performances in Solar Chimneys


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Abstract


The aim of the work presented in this study is related to solar chimneys energy performances determination, and flow modelling analysis, according to certain dominant parameters. The analysis of the problem presented in this paper is structured into two parts: the first one, is corresponding to energy calculation, for the prediction of the performances, such as the output and the power delivered by a solar chimney power plant (SCPP), according to some geometrical and physical parameters, such as the height and the solar radiation.  The second one is related to the modelling of the air flow in the chimney. It consists, in analysing a natural convective heat transfer problem, that take place in a solar chimney plant were the thermo- hydrodynamic aspects of the air flow through an axis symmetric system with well defined boundary conditions is examined. Obtained results are related to the temperature, and the velocity distributions in the device were they are determined by solving the energy and the Navier and Stokes equations, by using the finite volume method.  A specific consideration is given to identify the adequate position, in order to choose, and to optimize the site of the wind turbine in the chimney.
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Keywords


Solar Chimney; Heat Transfer; Numerical Simulation; Finite Volume Method

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References


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