Research and Optimization of CSP System Efficiency Based on Effects of Wind

Abstract

Solar thermal power generation has broad development prospects in China’s energy market due to its excellent power quality, continuous power generation, low manufacturing costs, and no pollution to the environment. Based on the theoretical support of computational fluid dynamics, structural strength theory, and Monte Carlo ray tracing method, ray tracing analysis on parabolic trough collector were carried out, to ensure that the concentrating efficiency of collector under the specified wind speed stays within the standard range. Based on the existing parameters, the collector is three-dimensional modeled. The size of the fluid domain was calculated. The calculation model was meshed, and the boundary conditions were set, according to the change of the wind force on the collector under different working angles. The best danger avoidance attitude and the most appropriate maintenance attitude of the collector are obtained, use the data transmission interface between ANSYS and Fluent software to perform a unidirectional fluid-structure coupling analysis on the collector, and pressure-transmit the surface wind pressure of the collector analyzed by Fluent software. Calculate the displacement deformation and equivalent stress distribution of the collector under the effect of wind pressure, Analyze and evaluate its structural strength. The ray tracing software Trace Pro is used to calculate the concentration efficiency under different wind speeds and working angles. Obtain the changing law of the collector efficiency under different wind speeds and different working angles, analyze whether the working efficiency meets the requirements under the two conditions of the design work.