Abstract: The disclosure is directed to a high precision two axis tracking system having adaptive angular velocity comprising: a pedestal coupled to a foundation; a slew drive comprising a modular velocity rotation driver operably coupled to the pedestal; an azimuth yoke operably coupled to the slew drive and hingedly coupled to an elevation hub; an elevation hub comprising a modular velocity elevation driver, hingedly coupled to the azimuth yoke; a directional apparatus configured to be precisely pointed towards a target, operably coupled to the elevation hub; and a processor operably coupled to the tracking system.

Abstract: A solar receiver (2) comprises a housing (4) defining a receiver chamber (12) and an aperture (14); a window (16) mounted in the aperture (14); at least two inlet means (17) axially spaced from the window (16) and positioned at different distances therefrom for the injection into the receiver chamber (12) of different flows of workind fluid; an outlet means (18) for the ejection of the working fluid out of the receiver chamber (12); and absorption control means for the provision of the different flows of the working fluid with different capability to absorb solar radiation

Abstract: A solar receiver (2) comprises a housing (4) defining a receiver chamber (12) and an aperture (14); a window (16) mounted in the aperture (14); at least two inlet means (17) axially spaced from the window (16) and positioned at different distances therefrom for the injection into the receiver chamber (12) of different flows of workind fluid; an outlet means (18) for the ejection of the working fluid out of the receiver chamber (12); and absorption control means for the provision of the different flows of the working fluid with different capability to absorb solar radiation