Study On A Combined System Of Wind Concentration Power Generation And Solar Concentration Thermal Utilization

Solar energy and wind energy as the representative of the new energy has the advantages of abundant reserves,wide distribution and clean.At present,the two types of energy utilization are relatively independent,only a single resource can be used in the same area can not be complementary advantages.In order to achieve the comprehensive utilization of solar energy and wind energy resources,the combined system of wind concentration power generation and solar concentration thermal utilization is constructed in this paper.The system has two functions of wind concentration power generation and solar concentration thermal utilization,which can improve the output power of wind turbines and collect solar thermal energy for heating.In this paper,we study the performance of the system in two ways:experimental analysis and computer simulation.In the experimental part,the output power of wind concentration power generation in the wind speed range of 2?7m/s and solar concentration thermal utilization in the sunshine intensity range of 400?900W/m2 is studied.The output power of wind turbine is increased from 14.0W to 25.9W after install air concentrator at the wind speed of 7m/s.The output power of heat collecting device of system can reach 223W at the sunshine intensity of 900W/m2.The system can make effective use of solar energy and wind energy.In the simulation analysis part,simulation analysis is based on the simulation platform of ANSYS Workbench 15.0.The simulation model equal to physical size is built to simulate the performance of the concentrated wind power generator.This part is not only analysis the flow field through the wind concentrator,but also the output power is calculated according to the blade torque.The results of FLUENT multiple reference frame model,CFX Immersed Solid model and CFX Frozen Rotor model be compared.The CFX Frozen Rotor model simulation and experimental data is most consistent.According to the simulation results,the output power of the wind concentration power generation model is up to 52.3W when the wind speed is 10m/s.The output power of the wind concentration power generation increased by 41%compared with the wind turbine with the same impeller diameter.In this paper,the experiment and the simulation results provide guidance for the comprehensive utilization of wind energy and solar energy.