Rooftop wind turbine flow improvements

Abstract

One of the challenges of rooftop wind turbines is that the building causes turbulence and updrafts and can create a blockage to the wind at rooftop level. That means lower speed and higher turbulencewind hitting the turbine and less power output. Prior art solutions consisted of elevating the blades of rooftop turbines or making the updraft hit the blades. Creating structures that separate the turbulence of the air below roof level from the oncoming and higher velocity linear wind above roof level, where the turbine is located, can decrease slowing of the rooftop level wind stream and enablethe blades to be placed closer to roof level, thereby saving construction costs and roof weight. It is ideal to combine these improvements with a vertical axis wind turbine.

Description

[0001] Cross-referencing related application documents [0002] This application claims the benefit of U.S. Provisional Patent Application No. 62 / 384,732, filed September 8, 2016. technical field [0003] The present invention relates to a method of influencing wind motion on a roof so that the building interferes less with the power generation of the roof turbine. Of course this can be applied, and by said application is meant any similar environment, but also underwater turbines and seascapes. Background technique [0004] Previous studies have noted the problem of wind turbulence on roofs, but most have looked to roofs as a solution for avoiding obstructions, usually on the roof surface: “As a rule of thumb, turbines should be at least 150 m (500 ft) Any obstacle in range up to 9 meters (30 feet):" One reference identifies the problem with no solution: "Worse, all obstacles, trees, other structures, and even the house itself, cause wind turbines.” (http: / / www.engineeri...

AI Technical Summary

Problems solved by technology

[0004] Previous studies have noted the problem of wind turbulence on roofs, but most have looked to roofs as a solution for avoiding obstructions, usually on the roof surface: “As a rule of thumb, turbines should be at least 150 m (500 ft) Any obstacle in range up to 9 meters (30 feet):" One reference identifies the problem with no solution: "Worse, all obstacles, trees, other structures, and even the house itself, cause wind turbulent flow

This has the disadvantage of less power from the tilt vector, and faster degradation of the turbo imbalance forces, so it doesn't really solve the problem

From the cited references it is clear that these solutions were not thought of even by experts in said field

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