Performance Numerical Simulation And Structure Optimization Of Air To Air Cooler For Wind Turbine

Plate heat exchanger as an efficient heat transfer equipment, are widely used in almost all industrial fields. Its small area, high efficiency, compact structure, convenient processing and maintenance is the key equipment in the process of production process is also energy-saving emission reduction, improve energy utilization of key equipment. Wind power is a clean, no pollution renewable energy, all countries in the world are in large-scale development and utilization of wind energy for power generation, the global scale is the use of renewable energy wind power accounted for more than half. Heat exchanger is a good solution to the problem in the motor cooling wind power. But the traditional wind turbine with plate heat exchanger medium using water gas, complex mechanism, water and leakage is difficult to be solved. In view of this, the design of the wind turbine generator cooling problems with theoretical knowledge design heat exchanger is a kind of air to air type, aiming to design a ideal air to air heat exchanger, the use of SolidWorks tool for simulation, validation data rationality. And on this basis, the main work is as follows:1. A brief introduction to the history of wind turbine, and advantages. Today the size of wind power, the wind power generation units of heat if improved, the life of the wind turbine will be greatly improved. Briefly introduces the advantages of plate heat exchanger, energy applications. The wind turbine, air-air has the advantages of plate heat exchanger, heat exchanger and research the status quo, problems.2. The wind turbine generator cooling special conditions in the field of the data collection, through access to information and the actual work situation considering wind turbine with the basic parameter of plate heat exchanger. In consideration of the wind turbine actual exchanging heat storage size, and heat storage temperatures in the summer of, conservative value, using theoretical analysis method fluid analysis and calculation of the basic data, in thermal power transfer to 80KW-90KW, using reverse design method to design the basic structural size of air to air heat exchanger.3. Use SolidWorks flow simulation tool to model in the design theory that the plate heat exchanger, according to the model of 3D fluid simulation, boundary conditions set for the wind turbine with air to air heat exchanger actual condition, namely the design of the initial conditions. The simulation results are compared with the theoretical design parameters, and the maximum heat transfer power is verified to meet the requirements.4. Based on the actual conditions of the heat exchanger design of wind turbine performance and size has a big flaw. This paper uses Matlab algorithm to optimize the heat exchanger. Maximum heat transfer power in the most appropriate size. The optimum design is based on the plate spacing, and the cooling air inlet air quantity is the supplement, the constraint condition is the size of the heat exchange and the size structure. Using Flow Simulation Solidworks tool to verify the optimal value of the optimization algorithm, the result analysis.