Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Patent
1993-05-12
1995-06-06
Lazarus, Ira S.
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
60651, 60655, 60673, F01K 2506
Patent
active
054211573
ABSTRACT:
A low temperature engine system has an elevated temperature recuperator in the form of a heat exchanger (12) having a first inlet connected to an extraction point (45) at an intermediate position between the high temperature inlet and low temperature outlet (14) of a turbine heat engine (8, 10) and an outlet connected by a conduit (47) to a second inlet to the turbine between the high and low temperature ends thereof and downstream of the extraction point (45). In the recuperator (12) thermodynamic medium vapor from extraction point (45) is in heat exchange relationship with thermodynamic medium conducted from the low temperature exhaust end (14) of the turbine unit (8, 10) through a water cooled condenser (6) and in heat exchange relationship in a refrigerant condenser (2) with a refrigerant flowing in an absorption-refrigeration subsystem. The thermodynamic medium leaving the recuperator (12) for return to the turbine is conducted through return conduit (46) in further heat exchange relationship with the refrigerant of the absorbent-refrigerant subsystem (48) and is heated in a heat exchanger (56) by an external source of heat energy and is returned to the high temperature end of the turbine through conduit (58) to complete the cycle. External coolant, such as water, is conducted through the thermodynamic-medium condenser (6) in heat exchange relation with the thermodynamic medium passing therethrough from the low temperature exhaust end (14) of the turbine.
REFERENCES:
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patent: 4130992 (1978-12-01), Bitterlich et al.
patent: 4330998 (1982-05-01), Nozawa
patent: 4444015 (1984-04-01), Matsumoto et al.
patent: 4573321 (1986-03-01), Knaebel
Heyman L.
Lazarus Ira S.
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