extra in Englisch:
Nirgends steht dort wie von ihm "gesehen": "the claimed invention cannot be considered novel or cannot be considered to involve an inventive step"
Besonders auch nicht bei den für das EnergieModul relevanten Claims 1 + 15 ;)
Da hat Borealis wohl geträumt ?
ip.com/patent/EP1702140B1
(English)
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A method of converting heat energy generated in an evaporator (6) to mechanical energy by expanding a vaporous working fluid which evaporates in the evaporator (6) and is expanded in an expansion device (2), characterized in that the expansion device (2) is formed as a low-pressure expansion device which is designed as a roots blower (2) in which the working fluid is expanded and wherein heat energy is transformed to mechanical energy.
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Method according to claim 1, characterized in that the expanded working fluid is condensed in a heat exchanger (7).
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Method according to claim 2, characterized in that at least a portion of the condensed working fluid is injected into the roots blower (2) during the expansion process.
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Method according to claim 3, characterized in that at least a portion of the injected working fluid condenses a portion of the vaporous working fluid in the roots blower (2) by heat exchange, and therefore reduces the output pressure.
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Method according to claim 3 or claim 4, characterized in that the working fluid injected in the roots blower (2) is pressure-controlled.
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Method according to any one of the preceding claims, characterized in that a pump (9) feeds the condensed working fluid into the evaporator (6).
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Method according to any one of the preceding claims, characterized in that a separator (3) is installed downstream of the heat exchanger (7), which extracts a portion of the condensed working fluid for the injection into the roots blower (2).
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Method according to any one of the preceding claims, characterized in that a first component of the working fluid formed by a mixture is absorbed in and/or downstream of the low-pressure expansion device (2) by means of an absorber whereas heat is transferred to the remaining, vaporous second component, which is recyclable.
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Method according to claim 8, characterized in that the mixture forms, at a certain mixing ratio of the components, an azeotropic mixture having a boiling point minimum.
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Method according to claim 8 or claim 9, characterized in that the working fluid is an azeotropic mixture or a nearly azeotropic mixture.
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Method according to any one of the preceding claims, characterized in that the vaporous remaining second component is heated to a temperature above the boiling point of the mixture by the heat transferred during absorption, whereas the second component is condensed in a heat exchanger (7).
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Method according to any one of the preceding claims, characterized in that the absorber is a reversibly immobilizable solvent which is in the non-immobilized state of aggregation, the first component of the working fluid.
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Method according to any one of the preceding claims, characterized in that the working fluid is an azeotropic mixture of water and silicone.
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Method according to any one of the preceding claims, characterized in that the absorption fluid is a silicate solution.
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Expansion device (2) for converting heat energy into mechanical energy by expanding a vaporous working fluid, characterized in that the expansion device (2) is formed as a low-pressure expansion device (2), which is designed as a roots blower (2).
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Expansion device (2) according to claim 15, characterized in that the roots blower (2) is coupled to a generator (1).
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Expansion device (2) according to claim 15 or claim 16, characterized in that the roots blower (2) is provided with at least one injection opening.
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Expansion device (2) according to any one of the preceding claims, characterized in that the roots blower (2) has multi-blade rotors.
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Use of a low-pressure expansion device (2), which is designed as a roots blower, for converting heat energy generated in an evaporator (6) to mechanical energy by expanding a vaporous working fluid, which is evaporated in the evaporator (6) and expanded in the low-pressure expansion device (2).
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