A hybrid design of VAWT

摘要

A modified Darrieus-type windmill is incorporated with a spheroidal-shaped elevated water tank located inside the blade assembly. The blades thus form a shape of elliptical configuration with connection flanges at the top and bottom of the elevated tank portion. The stem post of the elevated water tank, a cylindrical shell, will also serve as turbine generator support. The windmill will perform various functions, including water pump, electrical generator, air compressor, vacuum pump and refrigeration compressor by means of different gear boxes. Except for the water storage tank, all of the equipments are located inside the bottom cone of the water tank support to provide efficient maintenance and inspection procedures. By adapting the vertical axis wind turbine (VAWT) system, improved wind power efficiency and reduced maintenance costs are expected.