Method and apparatus for improving the efficiency of a...

Details Method and apparatus for improving the efficiency of a... Method and apparatus for improving the efficiency of a...

F - Mech Eng,Light,Heat,Weapons

01

K

F01K 25/10 (2006.01) F01K 25/08 (2006.01)

Patent

CA 2113167

2113167 9301397 PCTABS00019 The invention relates to a method for improving the efficiency of a small-size power plant preferably based on a closed, i.e. hermetic Organic Rankine Cycle (ORC) process. In the ORC process, the ORC medium, such as freon, toluene or the like, is vaporized in a vaporizer (1), expanded in a turbine (2), condensated in a cooler (3) and returned by a feeding device (4) back to the vaporizer (1). The small-size power plant, i.e. an energy converter unit or several of the same comprises a high-speed machine (7) which is formed of a turbine (2) and a generator (9) changing the form of energy mounted on a joint rotor (8). According to the invention, ORC medium is intercooled by an intercooler (6b, 6c) substantially in connection with turbine (2) and/or reheated by a superheater (5) in the vaporizer (1), whereby the first and second phase of the two expansion phases in the turbine (2) are carried out by the first (2a) and second (2b) turbine wheels of the turbine (2) mounted on the rotor (8) of the high-speed machine (7).

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