Abstract: A mirror collector having a generally parabolic surface terminating near the vertex in a circular or cylindrical curve, an evacuated cylindrical heat entrapment tube composed of a clear glass for energy admission and two pair of elongated heat collector tubes centrally located in the heat entrapment tube for passing an inner fluid to be heated. The two pair of heat collector tubes are constructed of copper with a selective absorption coating for receiving heat and positioned so that the mirror collector concentrates substantially all incoming energy upon the central heat collector tubes.

Abstract: A mirror collector having a generally parabolic surface terminating near the vertex in a circular or cylindrical curve, an evacuated cylindrical heat entrapment tube composed of a clear glass for energy admission and an elongated, U-shaped heat collector tube centrally located in the heat entrapment tube for passing an inner fluid to be heated. The U-shaped tube is constructed of copper with a selective absorption coating for receiving heat and positioned so that the mirror collector concentrates substantially all incoming energy upon the central heat collector tube for providing a concentration factor of about four (4).

Abstract: A mirror collector having a generally parabolic surface terminating near the vertex in a circular or cylindrical curve, a collector tube composed of a clear glass outer tube for energy admission and for passing an inner fluid, the collector being generally elliptical in nature constructed of copper with a selective absorption coating for receiving heat and positioned so that the mirror concentrates substantially all incoming energy upon the central collector tube for providing a concentration factor of about four (4).

Abstract: A mirror collector having a generally parabolic surface terminating near the vertex in a circular or cylindrical curve, a collector tube composed of a clear glass outer tube for energy admission and for passing an inner fluid, the collector being generally eliptical in nature constructed of copper with a selective absorption coating for receiving heat and positioned so that the mirror concentrates substantially all incoming energy upon the central collector tube for providing a concentration factor of about four (4).