EP1555396A1
Expired / Lapsed
EP
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Apparatus for the production of electric energy using high temperature fumes or gasses
Assignee: Turboden SpA
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Filing: 2004-12-13
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Granted: —
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Expires: 2024-12-13
Abstract
Abstract This invention concerns a system for producing electric or mechanical energy, starting from the fumes or gasses from combustion of a biomass or from some other origin that includes a turbogenerator group (12) operating according to the Rankine cycle and an intermediate heat exchange between the high temperature fumes or gasses and an working fluid evaporation heat exchanger (16) feeding the turbogenerator group (12). Flowing in the intermediate heat exchange circuit (13) is a aeriform fluid that on the one hand, is heated by the high temperature gasses or fumes and on the other, releases heat to the working feed fluid of the turbogenerator group (12). The aeriform fluid can be an inert gas or air with a low oxygen content.
Inventors
- 👤 Mario Gaia
- 👤 Roberto Bini
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 05:16
CPC Classifications
F; F01; F01K; F01K25/00; F01K25/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
124 words
Apparatus for producing electric or mechanical energy starting from
fumes or gasses from combustion or other origin, comprising a source of high
temperature fumes or gasses, a turbogenerator group operating according to
the Rankine cycle, an intermediate heat exchange circuit between said high
temperature fumes or gasses source and a heat exchanger for the evaporation
of a working fluid feeding the turbogenerator, means for
regenerating/condensing the working fluid on exiting the turbogenerator, and
where the working fluid is an organic or inorganic fluid, characterised in that in
the intermediate heat exchange circuit a aeriform fluid circulates which, on the
one hand, is heated by the high temperature fumes and gasses and on the
other, releases heat to the working fluid flowing in the turbogenerator.
Claim 2
Dependent Claim
37 words
Apparatus for producing electric or mechanical energy according to
claim 1, in which the aeriform fluid in the intermediate heat exchange circuit is
an inert gasses which is incapable of forming a flammable mixture with other
substances.
Claim 3
Dependent Claim
29 words
Apparatus for producing electric or mechanical energy according to
claim 1, in which the aeriform substance in the intermediate heat exchange
circuit is air with a reduced oxygen content.
Claim 4
Dependent Claim
126 words
Apparatus for producing electric or mechanical energy starting from
fumes or gasses from combustion or some other origin, consisting in a source
of high temperature fumes or gasses, a turbogenerator group operating
according to the Rankine cycle, an intermediate heat exchange circuit between
said high temperature fumes or gasses source and a heat exchanger for the
evaporation of a working fluid feeding the turbogenerator, means for
regenerating/condensing the working fluid on exiting the turbogenerator, and
where the working fluid is an organic or inorganic fluid, characterised in that in
the intermediate heat exchange circuit an inert gas circulates which, on the
one hand, is heated by the high temperature fumes and gasses and on the
other, releases heat to the working fluid flowing in the turbogenerator.
Claim 5
Dependent Claim
129 words
Apparatus for producing electric or mechanical energy starting from
fumes or gasses from combustion or some other origin, consisting in a source
of high temperature fumes or gasses, a turbogenerator group operating
according to the Rankine cycle, an intermediate heat exchange circuit between
said high temperature fumes or gasses source and an operating fluid
evaporation heat exchanger feeding the turbogenerator group, means for
regenerating/condensing the operating fluid on exiting the turbogenerator, and
where the operating fluid is an organic or inorganic fluid, characterised by the
fact that flowing in the intermediate heat exchange circuit is air with a low
oxygen content which, on the one hand, is heated by the high temperature
fumes and gasses and on the other, releases heat to the feed operating fluid of
the turbogenerator.
Claim 6
Dependent Claim
35 words
Apparatus for producing electric or mechanical energy according to
any of the previous claims, in which the intermediate heat exchange circuit is a
closed circuit operating a pressure equal to or different from atmospheric
pressure.
Claim 7
Dependent Claim
68 words
Apparatus for producing electric or mechanical energy according to
any of the previous claims, characterised by an initial high temperature gasses
or fumes collection chamber, and in that the intermediate heat exchange circuit
includes an intermediate exchanger connected to said chamber by means of a
feed duct in which a aeriform fluid flows to heat the latter in two phases, one by
radiation and the other by convection.
Claim 8
Dependent Claim
72 words
Apparatus for producing electric or mechanical energy according to
claim 7, characterised by a circuit for a partial recycle of the gasses and fumes
between a part downstream of their exit from the intermediate exchanger and
the feed duct of the gasses or fumes to said intermediate exchanger to control,
by means of temperature probes, the temperature of the gasses and fumes
between said initial chamber and the input into the exchanger.
Claim 9
Dependent Claim
52 words
Apparatus for producing electric or mechanical energy according to
any of the previous claims, characterised in that around the initial high
temperature gasses and fumes collection chamber a double walled casing is
provided, in which can be made to circulate and heat the aeriform fluid flowing
in the intermediate heat exchange circuit.
Claim 10
Dependent Claim
56 words
Apparatus for producing electric or mechanical energy according to
any of the previous claims and where the high temperature gasses or fumes
source is a biomass combustor or similar, characterised furthermore by a
circuit to direct a part of the aeriform fluid flow to cool the grate or parts of the
combustion chamber of said combustor.
Claim 11
Dependent Claim
50 words
Apparatus for producing electric or mechanical energy according to
any of the previous claims, characterised in that a valve usually closed and
intended to open is associated with the high temperature initial collection
chamber to discharge the gasses and fumes should the operating fluid fail to
absorb the heat power.
Claim 12
Dependent Claim
74 words
Apparatus for producing electric or mechanical energy according to
claim 10 and where the operating fluid is organic, further characterised in that it
includes organic fluid presence sensors in the aeriform fluid circuit to enable
stopping of the aeriform fluid circulation in the intermediate circuit and opening
of a discharge valve of the high temperature gasses or fumes in the collection
chamber in answer to the presence of organic fluid in the aeriform substance.
References Cited (Backward Citations)
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