| 摘要 |
A transverse flow roller wind turbine comprises a bladed rotor 1 and a shroud 6; the blades 5 being exposed to the wind for at least part of their rotation, and being covered by the shroud 6 for at least part of their rotation. The turbine rotor 1 may have a horizontal axis with the blades 5 being exposed to the wind above the shroud 6. The turbine rotor 1 may be located along the apex of a pitched roof which forms the shroud 6. Alternatively the turbine rotor 1 may have a vertical axis and may be combined with a civil feature such as a lighting tower (figure 3). The rotor blades 5 may define a full, partial or double helical shape, and/or they may comprise a number of individual blade portions (22, figure 5). A sail (15, figures 3, 6) may be provided to align the turbine rotor with the direction of the wind. |
