Cogeneration method and equipment
AssigneeSuez Environment
InventorFrederic Duong
Life of this patent
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Abstract
Cogeneration method, according to which a hot source (2) produces steam that is released in at least one turbine (3) having a low-pressure steam outlet (5) linked to a condenser; at least a fraction (Q) of the steam leaving the turbine (3) is directed towards a Venturi thermocompressor (14) into which a fluid having higher pressure and temperature than the outgoing steam is injected, resulting in a fluid having higher pressure and temperature than the outgoing steam, and this mixture is directed towards a second condenser (21) where the heat of the mixture is transferred to an auxiliary fluid of a circuit (23) external to the thermodynamic cycle.
Claims12
A cogeneration method comprising a hot source producing steam which is expanded through at least one turbine the low-pressure steam outlet of which is connected to a condenser, at least a fraction of the low-pressure steam leaving the turbine is directed toward a venturi-effect thermocompressor in which the steam, tapped from an intermediate stage of the turbine, at a temperature and pressure that are higher than those of the low-pressure steam, is injected near the throat of the venturi in order to yield a resultant fluid the pressure and temperature of which are higher than those of the low-pressure steam leaving the turbine, this resultant fluid being directed toward a second condenser,
- wherein the second condenser has passing through it an auxiliary fluid from a circuit external to the thermodynamic cycle of the turbine, and all or some of the latent heat of condensation of the steam, on the exhaust side of the turbine, is transferred to the external circuit.
Dependencies are inferred from the claim text.