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1. (WO2017002036) SYSTÈME POUR RÉCUPÉRER DE L'ÉNERGIE À PARTIR DE SOURCES RENOUVELABLES
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Claims

1. A system for recovering energy from renewable sources, comprising:

a first conduit (2) for the flow of a working fluid;

heating means (3) of said fluid in said first conduit (2) adapted to promote the flow thereinside;

characterized by comprising a turbine (4) having a conveyor (5) in fluid communication with said first conduit (2) and an impeller (6) adapted to be connected to generating means (8) for the generation of energy for receiving the flow sent by said first conduit (2) and intercepted by said conveyor (5) and operating said generating means (8).

2. System as claimed in claim 1 , characterized in that said impeller (6) has one or more blades (15) adapted to move between a thrust position and a return position upon rotation of said impeller (6), said conveyor (5) having a supplying mouth (16) for the flow in a position facing the blade (15') in said thrust position and a side wall (17) at least partially wrapping said impeller (5).

3. System as claimed in claim 2, characterized in that said turbine (4) comprises a flow diverter (18) which extends from an input section (19) facing one or more blades (15") in said return position to an output section (20) facing one or more blades (15') in said thrust position and in fluid communication with said conveyor (5) to return at least partially the working fluid toward the latter and increase the torque produced by the flow on said impeller (6).

4. System as claimed in claim 3, characterized in that said flow diverter (18) is divided into a plurality of return ducts (21) substantially curvilinear and in mutually side-by-side position.

5. System as claimed in any preceding claim, characterized in that said heating means (3) comprise a heater device (9) operating with a renewable energy source, such as a solar thermal device (14), a solar concentration device or the like, having a second conduit (10) for the circulation of a heating fluid fluidically connected to said first conduit (2).

6. System as claimed in claim 5, characterized in that said heating means (3) comprise a heat exchanger (11) having a primary circuit (12) fluidically connected to said first conduit (2) and a secondary circuit (13) fluidically connected to said second conduit (10).

7. System as claimed in claim 6, characterized in that said heat exchanger (11) is arranged upstream of said conveyor (5) with respect to the fluid flow.

8. System as claimed in any preceding claim, characterized in that said turbine (4) comprises a conveying duct (40) jointed to said first conduit (2) upstream of said impeller (6) and designed to speed up the flow entering said impeller (6).

9. System as claimed in claim 8, characterized in that said turbine (4) comprises an

acceleration duct (27) jointed to said first conduit (2) downstream of said impeller (6) and designed to speed up the flow outcoming from said impeller (6).

10. System as claimed in any preceding claim, characterized by comprising a ventilated wall (22) having an anchoring structure (23) adapted to be secured to a facade (F) of a building and a coating (24) fixed to said anchoring structure (23) at a predetermined distance (d) from the facade (F) to define a gap (25) therewith, which gap (25) having an upper edge (26) at least partially open, said first conduit (2) being housed into or defined by said gap (25).

11. System as claimed in claim 10, characterized in that said conveyor (5) of said turbine (4) is in fluid communication with said gap (25) for receiving a flow of air raising thereinto and to be sent to said impeller (6).

12. System as claimed in claim 11, characterized in that said conveyor (5) is defined by an extension of the curvilinear end (17) of said coating (24) which extends beyond said upper edge (26) of said gap (25).

13. System as claimed in any preceding claim, characterized in that said heat exchanger (11) is placed at the base of said gap (25) and is optionally provided with one or more fans adapted to force the rising of the heated air flow towards said conveyor (5).

14. System as claimed in any preceding claim, characterized in that said turbine (4) comprises a stator (28) having a plurality of first radial channels (29) for ejecting flow each having an inlet (30) connected to said first conduit (2) and an outlet (31) facing a respective blade (15) of said impeller (6).

15. System as claimed in claim 14, characterized in that said stator (28) comprises a plurality of second radial channels (32) each having an inlet (35) connected to an auxiliary duct (34) open towards the outside for the input of an air flow and an outlet (36) facing a respective blade (15) of said impeller (6).

16. System as claimed in claim 15, characterized in that said first radial channels (29) are alternated to said second radial channels (32).

17. System as claimed in claim 16, characterized in that the outputs (31, 36) of said first (29) and second radial channels (32) are facing respective blades (15) of said impeller (6) with an inclination such as to produce a respective output fluid jet incident the respective blade (15) with an angle comprised between 80° and 100°.

18. System as claimed in claim 17, characterized in that said turbine (4) is of the Darrieus type with a plurality of blades (15) arranged peripherally to said stator (28).