Efficient wind turbine design for low velocity air flow

Details Efficient wind turbine design for low velocity air flow Efficient wind turbine design for low velocity air flow

1982-09-27

1984-01-24

Howell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Multiple axially spaced working members

Circumferentially offset

416176, 416237, F03D 106

Patent

active

044273436

ABSTRACT:
Six rows of radial blades, arranged to extend in a spiral (in the direction of axial rotation) covering 55 degrees of arc about a hollow support section, constitute an optimum blade arrangement for maximum efficiency in low velocity airflows. Each blade in the rows is contoured to receive both direct flow pressure as well as airfoil lift in order to provide maximum energy transfers from low velocity airflows.

REFERENCES:
patent: 327370 (1885-09-01), Williams
patent: 628497 (1899-07-01), Smith
patent: 1467227 (1923-09-01), Capell
patent: 1612110 (1926-12-01), Funger
patent: 2619318 (1952-11-01), Schaer
patent: 2767549 (1956-10-01), Martin
patent: 3032119 (1962-05-01), Hachmann
patent: 4065225 (1977-12-01), Allison
patent: 4213737 (1980-07-01), Gerhardt

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