... ,submersible ac pumpThis system consists of wind-gathering-ring wind turbine, controller, inverter, storage battery, submersible pump and water ... simple installation, high performance-price ratio. Horizontal-axis wind turbine with wind-gathering ring, principle of dynamics, low start- ... nearly 2 to 3 times that of same-power wind turbine.Established in 1988, Gansu Provincial Sci. and Tech. Department ...