Abstract
The solar chimney power plant (SCPP) has been studied in many works but most have focused on outside urban areas, due to dimension constraint. This paper aims to offer a database for an appropriate integration of SCPP in urban areas. For this purpose, a 3D axisymmetric CFD model was established for the SCPP in Manzanares, Spain. Six chimney models were successively reduced by a 0.5 scaling factor and exposed to different solar radiation, thereby generating 30 scenarios. The RNG k-ɛ turbulence model and discrete ordinates non-grey radiation model were adopted. The paper contains also an applied example of using results in evaluating daily energy production from proposed chimneys on industrial buildings roofs. The results showed that air velocity, pressure difference, and mass flow rate follow puissance, linear, and polynomial decrease, respectively, as the scale factor reduces, whereas the temperature logarithmically rises. Moreover, output energy and system efficiency follow puissance and polynomial decrease, respectively, as the scale factor reduces. Exposure of the system to radiation 1000 w/m2 generate 21.2, 11.74, and 5.65 kW/h electrical power for scale factors 0.76, 0.636, and 0.51, respectively. Where they provide a daily energy 191.93, 106.55 and 51.12 kwh/day on a day type in Batna, Algeria.
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