Organic rankine cycle system and method

Details Organic rankine cycle system and method Organic rankine cycle system and method

F - Mech Eng,Light,Heat,Weapons

22

G

F22G 1/00 (2006.01) F22D 1/00 (2006.01) F22G 7/00 (2006.01)

Patent

CA 2701592

An ORC system (10) configured to limit temperature of a working fluid (14) below a threshold temperature is provided. The ORC system (10) includes a heat source (16) configured to convey a waste heat fluid (18). The ORC system (10) also includes a heat exchanger (20) coupled to the heat source (16). The heat exchanger (20) includes an evaporator (22) configured to receive the waste heat fluid (18) from the heat source (16) and vaporize the working fluid (14), wherein the evaporator (22) is further configured to allow heat exchange between the waste heat fluid (18) and the vaporized working fluid at an elevated temperature and further produce an evaporator outlet flow including a lower temperature waste heat fluid (31). The heat exchanger (20) also includes a superheater (24) configured to receive the lower temperature waste heat fluid (31) from the evaporator (22), wherein the superheater (24) is further configured to allow heat exchange between the lower temperature waste heat fluid (31) and a relatively higher temperature working fluid contained in the superheater (24) and further produce a superheater outlet flow comprising an elevated temperature waste heat fluid. The heat exchanger (20) further includes a preheater (28) configured to receive the elevated temperature waste heat fluid from the superheater (24) and allow heat exchange with a relatively lower temperature working fluid in a liquid state contained in the preheater (28).

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