Abstract: Solar chimney and method for generating power by the solar chimney are provided. The solar chimney includes a chimney; a heat absorbing surface; a transparent cover located above the surface and forming an air pathway with the surface to the entrance to the chimney; one or more integrated turbine-generators at or before the entrance to the chimney for producing electrical power; and a focusing lens focusing solar radiation on a heat exchanging element to heat air at or just before the entrance to the chimney as it flows to the one or more turbines.

Abstract: Solar chimney and method for generating power by the solar chimney are provided. The solar chimney includes a chimney a heat absorbing surface; a transparent cover located above the surface and forming an air pathway with the surface to the entrance to the chimney; one or more integrated turbine-generators at or before the entrance to the chimney for producing electrical power; and a focusing lens focusing solar radiation on a heat exchanging element to heat air at or just before the entrance to the chimney as it flows to the one or more turbines.

Abstract: Solar chimney and method for generating power by the solar chimney are provided. The solar chimney includes a chimney; a heat absorbing surface; a transparent cover located above the surface and forming an air pathway with the surface to the entrance to the chimney; one or more integrated turbine-generators at or before the entrance to the chimney for producing electrical power; and a focusing lens focusing solar radiation on a heat exchanging element to heat air at or just before the entrance to the chimney as it flows to the one or more turbines.

Abstract: Solar chimney and method for generating power by the solar chimney are provided. The solar chimney includes a chimney; a heat absorbing surface; a transparent cover located above the surface and forming an air pathway with the surface to the entrance to the chimney; one or more integrated turbine-generators at or before the entrance to the chimney for producing electrical power; and a focusing lens focusing solar radiation on a heat exchanging element to heat air at or just before the entrance to the chimney as it flows to the one or more turbines.

Abstract: Solar chimney and method for generating power by the solar chimney are provided. The solar chimney includes a chimney; a heat absorbing surface; a transparent cover located above the surface and forming an air pathway with the surface to the entrance to the chimney; one or more integrated turbine-generators at or before the entrance to the chimney for producing electrical power; and a focusing lens focusing solar radiation on a heat exchanging element to heat air at or just before the entrance to the chimney as it flows to the one or more turbines.

Abstract: Methods of operating a supercritical Brayton cycle integrated with another cycle for power, cogeneration, or poly-generation using solar energy as a main source of energy. A system includes a supercritical CO2 Brayton cycle as a topping cycle and any one or more of a power cycle, a cooling cycle, a steam production cycle, and a water desalination cycle as a lower cycle. When not enough solar irradiation is available to power the combined cycle, the lower cycle is only operated or both part of the topping cycle as well as the lower cycle through the solar thermal energy and/or the stored thermal energy.

Abstract: Methods of operating a supercritical Brayton cycle integrated with another cycle for power, cogeneration, or poly-generation using solar energy as a main source of energy. A system includes a supercritical CO2 Brayton cycle as a topping cycle and any one or more of a power cycle, a cooling cycle, a steam production cycle, and a water desalination cycle as a lower cycle. When not enough solar irradiation is available to power the combined cycle, the lower cycle is only operated or both part of the topping cycle as well as the lower cycle through the solar thermal energy and/or the stored thermal energy.