Simulation Calculation on Solar Chimney Power Plant System

摘要

It is unpractical to establish a Solar Chimney Power Plant System (SCPPS) used to experimental research for being a large scale system .Using the Spanish prototype plant as simulation object, the SCPPS is numerical simulation calculated. Choosing calculative model and setting boundary conditions in calculation are introduced. Boussineq model was adopted for natural convection, Discrete Ordinate radiation model (DO) was employed for radiation and ground under collector cover roof was seen as a constant inner heat source. 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 differential pressure of collector-chimney transition section in the system, is increase with the increase of solar radiation intensity.