Résumé:
Heat transfer process and fluid flow in a Solar Chimney Power Plant System used
for natural ventilation are investigated numerically. Using the Spanish prototype plant as
simulation object. Choosing calculative model and setting boundary conditions in calculation
are introduced. Boussinesq model was adopted for natural convection, Discrete Ordinate
radiation model (DO) was employed for radiation. The main factors that influence on the
performance of the SCPPS have been simulated. The effects on the flow field of the SCPPS
which caused by solar radiation intensity have been analyzed. The calculated results are
approximately equivalent to the relative experimental data of the prototype. It shows the
dependability of the simulative results and the validity of the simulation methods. It can be
concluded that the pressure throughout system is negative value; the temperature
difference between the inlet and outlet of collector, as well as the air velocity in the collector
of the system, is increase with the increase of solar radiation intensity
