Patent ID: 8534068

Claim:
A solar chimney, comprising: a) an elongated chamber having an inlet and an outlet, the chamber defining a path for fluid flow from the inlet to the outlet, b) the chamber having diameter which decreases from the inlet to a throat portion, and wherein the diameter increases from the throat portion towards the outlet portion, c) means for heating air in the chamber by solar energy, and d) an exhaust wind turbine for providing suction in a direction which tends to draw air in the chamber towards the outlet, further comprising a vertical axis wind turbine, the vertical axis wind turbine being mounted in a vicinity of the outlet of the chamber, and being mounted to rotate relative to the chamber, wherein the vertical axis wind turbine is connected to an air compressor, wherein rotation of the vertical axis wind turbine causes the air compressor to operate, and wherein the air compressor is connected to drive an air-driven motor which is connected to operate the exhaust wind turbine.