NOVELTY - Photovoltaic cylindrical solar water cooled collector centrally fixed on a paraboloid stable mirror (1) for the production of electric and thermal energy, comprises one metallic tube (3) fixed in the center of a semi-cylindrical paraboloid stable mirror (13) and its lateral outer surface is coated with a number of photovoltaic concentrator cells arrays (15). The cells are appropriately joined in linear arrays on the lateral outside surface of the metallic tube (3) and these arrays are appropriately connected together outside the vacuum tube (1) in parallel.    USE - The photovoltaic cylindrical solar water cooled collector centrally fixed on a paraboloid stable mirror is used for the production of electric and thermal energy (claimed).    DETAILED DESCRIPTION - Photovoltaic cylindrical solar water cooled collector centrally fixed on a paraboloid stable mirror (1) for the production of electric and thermal energy, comprises one metallic tube (3) of relatively large diameter and almost 2 m in length (not restricted to), closed at both ends with welded bottoms (8) on both sides, and on each bottom one tube ( one half or three quarters in diameter) is affixed (welded) , the one on its outer surface and at its lower in temperature side as an inlet (10) and the one at its higher temperature side as an outlet (14) of water or other appropriate liquid. The metallic tube (3) is fixed in the center of a semi-cylindrical paraboloid stable mirror (13) and its lateral outer surface is coated with a number of photovoltaic concentrator cells arrays (15) in the zone of the linear-focus (for the duration the day and during the sunshine) and the remaining surface of the tube (3) (not covered by concentrator cell arrays area) shall possibly be coated with black color or black nickel or black titanium making it selective for absorbing heat. The cells are appropriately joined in linear arrays on the lateral outside surface of the metallic tube (3) and these arrays are appropriately connected together outside the vacuum tube (1) in parallel. The cells are cooled with water (or oil, or other liquid) which circulates inside the tube (3).    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the complete module of our photovoltaic solar concentrator cells collector.    Paraboloid stable mirror (1)    Metallic tube (3)    Bottom (8)    Inlet (10)    Semi-cylindrical paraboloid stable mirror (13)    Outlet (14)    Photovoltaic concentrator cells arrays (15)