Plant for the production of energy based upon the organic rankine cycle

Abstract

A plant for the production of energy that is based upon the organic Rankine cycle (ORC). The plant comprises a first ORC system, comprising a first organic operating fluid circulating, in sequence, between a first evaporator in conditions of heat exchange with a heat source, a first expansion stage in a turbine operatively connected to a generator, a first evaporator/condenser, and a first pump for recirculating said first organic operating fluid to said first evaporator. Said turbine is a partializable turbine and comprises means for partializing the incoming flowrate of said organic operating fluids, said means being designed to partialize said incoming flowrate to keep the r.p.m. of said turbine constant.

1 . A plant for the production of energy based upon the organic Rankine cycle (ORC), wherein it comprises a first ORC system comprising a first organic operating fluid circulating, in sequence, between a first evaporator in conditions of heat exchange with a heat source, a first expansion stage in a turbine operatively connected to a generator, a first evaporator/condenser, and a first pump for recirculating said first organic operating fluid to said first evaporator; said turbine being a partializable turbine and comprising means for partializing the incoming flowrate of said organic operating fluids, said means being designed to partialize said inlet flowrate to maintain the r.p.m. of said turbine constant. 
     
     
         2 . The plant for the production of energy according to  claim 1 , wherein said means for partializing the incoming flowrate of said organic operating fluids comprise a hydraulic device driven by the corresponding organic operating fluid. 
     
     
         3 . The plant for the production of energy according to  claim 1 , wherein it comprises a second ORC system, comprising a second organic operating fluid circulating, in sequence, between said first evaporator/condenser, a second expansion stage in a turbine operatively connected to a generator, a second evaporator/condenser, and a second pump for recirculating said second organic operating fluid to said first evaporator/condenser, said turbine comprising, for each of said stages, means for partializing the incoming flowrate of said organic fluids. 
     
     
         4 . The plant for the production of energy according to  claim 1 ,wherein said partializable turbine is a multistage turbine, with single shaft or with separate shafts, axially aligned or with parallel axes. 
     
     
         5 . The plant for the production of energy according to  claim 1 , wherein said heat source comprises heat-accumulation means. 
     
     
         6 . The plant for the production of energy according to  claim 5 , wherein said heat-accumulation means comprise a refractory-mass accumulation system or a closed-circuit molten-salt battery. 
     
     
         7 . The plant for the production of energy according to  claim 1 , wherein said heat source comprises means for integration of the available energy. 
     
     
         8 . The plant for the production of energy according to  claim 7 , said means for integration of the available energy comprise a thermodynamic solar-energy system. 
     
     
         9 . The plant for the production of energy according to  claim 1 , wherein it comprises a device for mechanical coupling between said turbine and said generator. 
     
     
         10 . The plant for the production of energy according to  claim 9 , wherein said mechanical-coupling device between said turbine and said generator comprises a reducer, a flywheel governor, and a brake set between the shaft of said turbine and the shaft of said generator. 
     
     
         11 . The plant for the production of energy according to  claim 1 , wherein said turbine is directly coupled to said generator, said plant comprising electronic means for conversion of the output voltage of said generator. 
     
     
         12 . The plant for the production of energy according to  claim 2 , wherein it comprises a second ORC system, comprising a second organic operating fluid circulating, in sequence, between said first evaporator/condenser, a second expansion stage in a turbine operatively connected to a generator, a second evaporator/condenser, and a second pump for recirculating said second organic operating fluid to said first evaporator/condenser, said turbine comprising, for each of said stages, means for partializing the incoming flowrate of said organic fluids. 
     
     
         13 . The plant for the production of energy according to  claim 2  wherein said partializable turbine is a multistage turbine, with single shaft or with separate shafts, axially aligned or with parallel axes. 
     
     
         14 . The plant for the production of energy according to  claim 3  wherein said partializable turbine is a multistage turbine, with single shaft or with separate shafts, axially aligned or with parallel axes. 
     
     
         15 . The plant for the production of energy according to  claim 2 , wherein said heat source comprises heat-accumulation means. 
     
     
         16 . The plant for the production of energy according to  claim 3 , wherein said heat source comprises heat-accumulation means. 
     
     
         17 . The plant for the production of energy according to  claim 4 , wherein said heat source comprises heat-accumulation means. 
     
     
         18 . The plant for the production of energy according to  claim 2 , wherein said heat source comprises means for integration of the available energy. 
     
     
         19 . The plant for the production of energy according to  claim 3 , wherein said heat source comprises means for integration of the available energy. 
     
     
         20 . The plant for the production of energy according to  claim 4 , wherein said heat source comprises means for integration of the available energy.