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1. WO2007093277 - METHOD FOR STORING AND RECOVERING ENERGY

Publication Number WO/2007/093277
Publication Date 23.08.2007
International Application No. PCT/EP2007/000760
International Filing Date 30.01.2007
IPC
F25B 9/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
9Compression machines, plant, or systems, in which the refrigerant is air or other gas of low boiling point
CPC
F03D 9/007
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
9Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
007the wind motor being combined with means for converting solar radiation into useful energy
F03D 9/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
9Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
10Combinations of wind motors with apparatus storing energy
18storing heat
F03D 9/25
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
9Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
20Wind motors characterised by the driven apparatus
25the apparatus being an electrical generator
F25B 2309/061
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
2309Gas cycle refrigeration machines
06Compression machines, plant or systems characterised by the refrigerant being carbon dioxide
061with cycle highest pressure above the supercritical pressure
F25B 2400/24
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
2400General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
24Storage receiver heat
F25B 6/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
6Compression machines, plant, or systems, with several condenser circuits
02arranged in parallel
Applicants
  • BW-ENERGIESYSTEME GMBH [DE]/[DE] (AllExceptUS)
  • WOLF, Bodo, Max [DE]/[DE] (UsOnly)
Inventors
  • WOLF, Bodo, Max
Agents
  • ZELLENTIN, Wiger
Priority Data
10 2006 007 119.016.02.2006DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR SPEICHERUNG UND RÜCKGEWINNUNG VON ENERGIE
(EN) METHOD FOR STORING AND RECOVERING ENERGY
(FR) PROCÉDÉ D'ACCUMULATION ET DE RÉCUPÉRATION D'ÉNERGIE
Abstract
(DE)
Die Erfindung betrifft ein Verfahren zur Speicherung und Rückgewinnung von Energie, insbesondere Sonnen- und Windenergie, die in Elektroenergie umgewandelt, genutzt wird zur Be- und Entladung eines Wärmespeichers mit Hilfe eines Kreisprozesses, der im Zyklus der Beladung des Speichers als Wärmepumpenprozess arbeitet, der lokale Umgebungswärme aufnimmt, diese im Temperaturniveau anhebt und damit den Wärmespeicher thermisch auflädt, indem das Arbeitsmittel des Kreisprozesses nach seiner Verdampfung durch Umgebungswärme unterhalb seines kritischen Druckes vor seiner Kompression auf überkritischen Druck durch Zuführung von interner Prozesswärme über seine kritische Temperatur rekuperativ vorgewärmt wird, bevor es nach der Kompression in einer ersten Kühlstufe einen Teil seiner Wärmeenergie, die oberhalb seiner kritischen Temperatur gebunden ist, an einen Wärmeträger rekuperativ abgibt und danach in einer zweiten, parallel arbeitenden Kühlstufe seine Wärmeenergie vor seiner Entspannung auf Verdampfungsdruck bis in die Nähe des Temperaturniveaus der Verdampfung durch Kondensation zur eigenen Vorwärmung vor der Kompression an sich selbst und an den Wärmeträger über getrennte Stoffströme rekuperativ überträgt.
(EN)
The invention relates to a method for storing and recovering energy, in particular solar and wind energy that is converted into electric energy and is used to charge and discharge a heat accumulator with the aid of a circulatory process, which operates as a thermal pump process that absorbs local ambient heat and raises the temperature level of the latter, thus thermally charging the heat accumulator. The working fluid of the circulatory process, after evaporation by the ambient heat below its critical temperature, is recuperatively pre-heated to above its critical temperature by the addition of internal process heat, prior to compression at supercritical pressure, before releasing part of its thermal energy, which is latent above its critical temperature, after compression in a first cooling stage to a heat transfer medium. In a second, parallel cooling stage the thermal energy is then recuperatively transferred, prior to being relaxed to an evaporation pressure that lies close to the temperaure level of evaporation by condensation, back to said fluid in order to reheat itself prior to compression and to the heat transfer medium via separate mass fluxes.
(FR)
L'invention concerne un procédé d'accumulation et de récupération d'énergie, notamment d'énergie solaire et éolienne, qui est transformée en énergie électrique et employée pour le chargement et le déchargement d'un accumulateur thermique à l'aide d'un processus cyclique. Dans le cycle de chargement de l'accumulateur, ledit processus est un processus de pompe à chaleur et consiste à recevoir de la chaleur environnante locale, à augmenter le niveau de température avec celle-ci et à charger ainsi l'accumulateur thermique du fait que le fluide de travail du processus cyclique est préchauffé de façon récupérative après son évaporation par la chaleur environnante, en-dessous de sa pression critique, avant compression à pression surcritique, par alimentation de chaleur de processus interne, au-dessus de sa température critique, avant de fournir après compression, dans une première étape de refroidissement, une partie de son énergie thermique, liée au-dessus de sa température critique, de façon récupérative à un caloporteur, et transfère ensuite dans une deuxième étape de refroidissement parallèle, son énergie thermique, avant décompression à pression d'évaporation, jusqu'à proximité du niveau de température de l'évaporation par condensation, pour son propre préchauffage avant compression, à lui-même et au caloporteur par des courants séparés, de façon récupérative.
Also published as
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