Abrégé

An arrangement having multiple heat exchangers and a method for evaporating a working fluid by transferring heat from a heat source medium is described herein. The arrangement is used in connection with a system for recovering energy from waste heat in a thermodynamic cycle, in which the waste heat is used as the heat source medium. Each heat exchanger has a heat source medium through-passage separated from a working fluid chamber are serially interconnected in a ring arrangement. A supply line is provided between the heat source medium through-passages of any two serially consecutive heat exchangers in the ring arrangement, which can be connected selectively to the inlet of the heat source medium through-passage of each heat exchanger. Further, a discharge line for the heat source medium is provided, which can be connected selectively to the outlet of the heat source medium through-passage of each heat exchanger.

Classes IPC  ?

• F22B 35/00 - Systèmes de commande pour chaudières à vapeur
• F22B 9/00 - Chaudières à vapeur du type à tubes de fumées, c.-à-d. où les fumées provenant d'une chambre de combustion à l'extérieur du corps de la chaudière s'écoulent dans des tubes faisant partie du corps de la chaudière
• F01K 25/02 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleursEnsembles fonctionnant selon un cycle fermé, non prévus ailleurs le fluide restant à l'état liquide
• F01K 25/08 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleursEnsembles fonctionnant selon un cycle fermé, non prévus ailleurs utilisant des vapeurs particulières
• F28F 27/02 - Commandes ou dispositifs de sécurité spécialement adaptés pour les appareils d'échange ou de transfert de chaleur pour commander la répartition des sources de potentiel calorifique entre des canaux différents

Abrégé

The invention relates to an assembly having a number of heat exchangers and to a method for evaporating a working medium by exchanging heat from a heat source medium, which assembly can be particularly advantageously used in combination with a system and a method for recovering energy from waste heat in a thermo-dynamic cycle process, wherein the waste heat is used as the heat source medium. In the assembly having a number of heat exchangers, each heat exchanger has a heat source medium through-passage and a working fluid chamber separated from said through-passage, and the heat source medium through-passages of the heat exchanger can be/are connected to one another in series in a ring assembly, wherein a respective valve means is provided between the heat source medium through-passages of two respective serially consecutive heat exchangers in the ring assembly, wherein a supply line for the heat source medium is provided which can be selectively connected to the inlet of the heat source medium through-passage of each heat exchanger, and wherein a discharge line for the heat source medium is provided which can be selectively connected to the outlet of the heat source medium through-passage of each heat exchanger.

Classes IPC  ?

• F22B 9/00 - Chaudières à vapeur du type à tubes de fumées, c.-à-d. où les fumées provenant d'une chambre de combustion à l'extérieur du corps de la chaudière s'écoulent dans des tubes faisant partie du corps de la chaudière
• F22B 35/00 - Systèmes de commande pour chaudières à vapeur
• F01K 25/02 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleursEnsembles fonctionnant selon un cycle fermé, non prévus ailleurs le fluide restant à l'état liquide
• F22B 3/00 - Autres méthodes de production de vapeurChaudières à vapeur non prévues dans les autres groupes de la présente sous-classe

Abrégé

The invention relates to a system for recovering energy from heat in a cyclical thermodynamic process. The cyclical process has the following components which are connected so as to communicate with one another: a condenser for re-cooling and liquefying a working medium; an evaporator arrangement which is provided downstream of the condenser, in relation to the flow direction of the working medium, for supplying the heat energy to the working medium in order to increase the temperature and the pressure of the working medium, said evaporator arrangement having at least two evaporator units which are independent of each other; a working chamber which is provided downstream of the evaporator arrangement for expanding the working medium from the evaporator arrangement in order to extract energy from the working medium; and a feedback for the at least partially expanded working medium to the condenser. A pump for the working medium is arranged between the condenser and the evaporator arrangement. A valve arrangement is provided upstream and downstream of the evaporator units, and the valve arrangement can be controlled such that the working medium can flow into the evaporator units selectively and sequentially in a staggered manner for each evaporator unit in a first phase; the evaporator unit is completely separated from the cyclical process in a second phase in order to heat the received working medium and to increase the pressure of the working medium; and the heated working medium can flow out to the working chamber in a third phase.

Classes IPC  ?

• F01K 13/00 - Dispositions générales ou processus généraux de fonctionnement des installations complètes d'ensembles fonctionnels de machines à vapeur
• F01K 25/00 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleursEnsembles fonctionnant selon un cycle fermé, non prévus ailleurs
• F02G 5/00 - Utilisation non prévue ailleurs de la chaleur perdue par les moteurs à combustion