Design And Selection Of Vertical Axis Wind Turbine Driving Heat Pump Compressor

Wind energy heating is one of the effective ways to reduce haze in windy cold area.The environmental pollution is serious.Heating technology of driving heat pump directly by wind energy is an important issue in the field of energy study.It will bring a great academic significance by studying the vertical axis wind turbine(VAWT)driving heat pump.The 15m~2 residential building of Zhangjiakou area is selected as an example.The VAWT driven compressor heat pump is taken as one research object in order to design and select an appropriate model.Firstly,the matching characteristics of VAWT and open-type compressor are analyzed in theoretical way.Based on climatic conditions,determining rated wind speed and heating load,measuring the efficiency of heat pump and other devices,determining the rated speed and output power of VAWT and analyzing the aerodynamic design methods and finishing this design.Secondly,utilizing numerical simulation method to check and analyze the best driving range of the wind wheel speed.Finally,it compared and verified those two methods of experimental research and numerical simulation.The results show that the VAWT with rated power of 300 W drive rated power of 250 W compressor,when the wind speed is greater than rated wind speed or equal to it and the wind wheel is set to rated speed,the system will be in the best operating state.Optimum tip speed ratio of the designed VAWT is about 3.4,the coefficient of its wind energy utilization is about 0.2;and in terms of its matching characteristic,the optimum speed of wind wheel of driven compressor ranges from 350r/min to 375r/min when the rated wind speed is 9m/s.Numerical simulation analysis method can be used at the design and type-selection period which is helpful to the preliminary design and verification,besides,it can also save the cost.Exploring the matching law of VAWT and open compressor,researching the method of system selection and VAWT aerodynamic design,and seeking selection idea and optimum operating condition are beneficial to lay theoretical basis for the optimal design and operation of the heat pump system directly driven by wind power.