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 whi
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.
대표청구항▼
1. 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 i
1. 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. 2. The method as claimed in claim 1, wherein the auxiliary fluid comprises water for heating buildings or market-garden greenhouses. 3. The method as claimed in claim 1, wherein the steam tapped from the intermediate stage of the turbine and injected into the thermocompressor is at a pressure of around 5 bar. 4. The method as claimed in claim 1, wherein the medium-pressure steam tapped from the intermediate stage of the turbine is at a pressure suited to the necessary compression ratio. 5. The method as claimed in claim 1, wherein the steam pressure on the outlet side of the turbine is comprised between 100 and 240 mbar (temperature between 46° C. and 64° C. and that on the outlet side of the thermocompressor is comprised between 200 mbar and 500 mbar (temperature between 60° C. and 81° C.). 6. A cogeneration plant for implementing a method as claimed in claim 1, the plant comprising a hot source producing steam which is expanded through at least one turbine the outlet of which is connected to a condenser, and comprising at least one venturi-effect thermocompressor, means for directing at least a fraction of the low-pressure steam leaving the turbine toward the thermocompressor, and means for injecting into the thermocompressor steam at a temperature and pressure that are higher than those of the steam leaving so as to yield a resultant fluid the pressure and temperature of which are higher than those of the steam leaving the turbine, and a second condenser toward which this resultant fluid is directed, the plant further comprising an external circuit for an auxiliary fluid, and the second condenser has passing through it the auxiliary fluid so that 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. 7. The plant as claimed in claim 6, wherein the external circuit consists of a medium-temperature hot water network, notably for heating buildings or market-garden greenhouses. 8. The plant as claimed in claim 6, further comprising a branch branching off from the turbine outlet pipe, the venturi-effect thermocompressor being installed on this branch-off, upstream of the first condenser. 9. The plant as claimed in claim 6, further comprising several branches in parallel branching off from the turbine outlet pipe, a venturi-effect thermocompressor being installed on each branch-off, upstream of the first condenser. 10. The plant as claimed in claim 6, further comprising several venturi-effect thermocompressors installed in series, one after another. 11. The plant as claimed in claim 6, further comprising a water droplet separator for eliminating water droplets from the steam prior to entry into thermocompressor. 12. The plant as claimed in claim 6, wherein the outlet pressure of the turbine is comprised between 100 and 240 mbar (temperature between 46° C. and 64° C.) and that on the outlet side of the thermocompressor is comprised between 200 mbar and 500 mbar (temperature between 60° C. and 81° C.), the medium-pressure steam of the turbine being around 5 bar.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (3)
Lang, Fred D., Method and apparatus for controlling the final feedwater temperature of a regenerative Rankine cycle using an exergetic heater system.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.