Electric energy delivery device and connected method

Abstract

An electric energy delivery device using waste energy sources such as steam, hot water, hot gases etc., a turbine being inserted into a circuit where a fluid suitable to change state (gas and liquid) at low temperature, comprising at least a heat exchanger where the fluid is made gaseous, a condenser where the fluid is made liquid and a recirculation pump, the turbine being fed with said gaseous fluid.

1 . An electric energy delivery device using waste energy sources such as steam, hot water, hot gases etc., wherein a turbine is inserted into a closed circuit where an energy transporter fluid circulates, suitable to change the state (gas and liquid) at low temperature, comprising at least a heat exchanger where said fluid is made gaseous at the rated temperature of the exchanger, a condenser where said fluid is made liquid and a recirculation pump of said liquid, the turbine being fed with a gaseous energy transporter fluid coming from the exchanger and driving at least an electric energy generator. 
     
     
         2 . The electric energy delivery device as in  claim 1 , wherein the energy substance (gas, steam, water or other) enters into the exchanger at a temperature comprised between 50° C. and 70° C., advantageously around 60° C. 
     
     
         3 . The electric energy delivery device as in  claim 1 , wherein the turbine has at least two stages. 
     
     
         4 . The electric energy delivery device as in  claim 1 , wherein the energy substance recovered is made to circulate in the open circuit of the exchanger. 
     
     
         5 . The electric energy delivery device as in  claim 1 , wherein there is at least a cooling mean to cool the energy substance upstream of the exchanger. 
     
     
         6 . The electric energy delivery device as in  claim 1 , wherein a cooling fluid is made to circulate in the open circuit of the condenser. 
     
     
         7 . The electric energy delivery device as in  claim 1 , wherein the turbine also drives the recirculation pump. 
     
     
         8 . The electric energy delivery device as in  claim 1 , wherein there is also an auxiliary pump present. 
     
     
         9 . The electric energy delivery device as in  claim 1 , wherein there are also detection and control means present, associated to a management, processing, control and command unit. 
     
     
         10 . A method to generate electricity with the device as in  claim 1 , wherein an energy transporter fluid, suitable to change state and to vaporize at the exchange temperatures of an exchanger into which a recovered energy substance enters, such as steam, water, hot gases or other, at a temperature comprised between 50° C. and 70° C., is made to circulate in a closed circuit becoming gaseous in the exchanger. 
     
     
         11 . The method as in  claim 10 , wherein said vaporized energy transporter fluid feeds a turbine in a closed circuit before being sent into a condenser where it becomes liquid again to be fed once again to the exchanger, restarting the cycle. 
     
     
         12 . The method as in  claim 10 , wherein said energy transporter fluid, made liquid, is fed to the exchanger by means of a recirculation pump. 
     
     
         13 . The method as in  claim 10 , wherein, before entering the exchanger, the energy substance transits in a cooling mean which takes it to a temperature advantageously around 60° C. 
     
     
         14 . The method as in  claim 10 , wherein the cooling fluid used to cool the energy substance to be sent to the exchanger, at exit from the cooling mean, becomes an energy substance to be used according to the present invention.