Utilization of wind energy from railways using vertical axis wind turbine

Railways generally run at a speed of 50–100 Km/hr with lot of wind energy being wasted to overcome the drag on the vehicle. In this work, a design is proposed to extract some useful energy out of the grazing wind on the top surface. A converging air duct passage along with spiral casing is provided on top of roof which is used to drive a vertical axis turbine. The produced energy can be used to drive an alternator to produce electricity. Thus the grazing wind on the roof can be used to produce some renewable source of energy which can be used to make railway compartment self-sustainable in energy requirements.