| 主权项 |
1. A horizontally-laid tangential rooftop wind power generator comprising:
(a) a chassis; (b) a generator mounted on the chassis; (c) at least one fan wheel mounted horizontally on the chassis and rotatably coupled to the generator; (d) a cover with two opposite lateral fan openings to encase the generator and at least one fan wheel; and (e) a front shrouded duct and a rear shrouded duct each extending from the two opposite fan openings of the fan wheel respectively, each shrouded duct being formed by a plurality of wind-directing panels extending outwardly from its corresponding fan opening; wherein the fan wheel comprises a plurality of wind blades mounted tangentially on two rims of the fan wheel, each wind blade is a long and slim blade having a cross-sectional shape of an arc and with two longitudinal edges slightly extended and folded backwards in line with the chord to form a wind augment zone at the underside of wind blade to enhance efficiency in capturing wind energy; wherein incoming wind is compressed and positively pressurized at a front wind augment zone defined by the front shrouded duct and the rooftop such that incoming wind is forced to diffuse through the fan wheel at an accelerated speed prior to entering into a rear shrouded duct region where pressure is negative, hence helping draw in more volume of air from the front before discharge to open air; wherein an upper edge of a lower wind-directing panel of the front shrouded duct extends to a region at about ¼ diameter height of the fan wheel; while at the rear shrouded duct, a lower edge of an upper wind-directing panel extends to a region at about ¼ diameter height of the fan wheel, whereby the upper and lower wind-directing panels guide passage of wind such that the fan wheel being encased inside the cover is allowed to rotate in one direction only irrespective of the direction of incoming wind; wherein the rooftop wind power generator is mounted on the body of a solar hot water system with a heating element inside the hot water storage cistern, and with heater wires paved on surface of vacuum solar heat collector tubes extending from the body of the water storage cistern; the electricity generated by the rooftop wind power generator can be fed to the heating element inside the hot water storage cistern to heat up water, or to a plurality of heater wires paved on surface of the vacuum solar heat collector tubes to melt away covering snow to enhance solar heat absorption efficiency; and wherein the vacuum solar heat collector tubes are arranged in two layers, wherein the tubes of the bottom layer are offset from the tubes of the upper layer such that any seepage of sunshine through the tubes of the top layer can be captured by the tubes of the bottom layer. |
