| 摘要 |
<p>A guiding apparatus for guiding a flow of a fluid for use with a rotor, the rotor comprising an annular radial vane assembly surrounding a central space which is enclosed save via the vane assembly and being arranged to rotate about a vertical axis, the guiding apparatus comprising a screening for guiding the fluid to circulate substantially about the vertical axis within the central space in the same direction as the rotor during use.</p> |
