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EP0974802A1 - Wärmeaustauschverfahren mit Energierückgewinnung für verdampfungsfähige Flüssigkeit und Vorrichtung zur Durchführung dieses Verfahren - Google Patents

Wärmeaustauschverfahren mit Energierückgewinnung für verdampfungsfähige Flüssigkeit und Vorrichtung zur Durchführung dieses Verfahren Download PDF

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Publication number
EP0974802A1
EP0974802A1 EP99401868A EP99401868A EP0974802A1 EP 0974802 A1 EP0974802 A1 EP 0974802A1 EP 99401868 A EP99401868 A EP 99401868A EP 99401868 A EP99401868 A EP 99401868A EP 0974802 A1 EP0974802 A1 EP 0974802A1
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EP
European Patent Office
Prior art keywords
enclosure
fluid
additional
transfer
cooled
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Granted
Application number
EP99401868A
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English (en)
French (fr)
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EP0974802B1 (de
Inventor
Roger Roux
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/06—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
    • F28C3/08—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour with change of state, e.g. absorption, evaporation, condensation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/04—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid
    • F28B9/06—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid with provision for re-cooling the cooling water or other cooling liquid

Definitions

  • the present invention relates to an exchange method of energy in thermal recovery using a fluid vaporizable and involving cooling of said fluid in liquid phase with production of the same fluid at the state of vapor under pressure. It also concerns a installation designed for the implementation of this process.
  • the invention is particularly applicable advantageous for cooling a utility fluid by leaving an industrial unit where it was used, by example, to cool the machines and equipment, or on the contrary as a heating, possibly brought to the state of vapor in a boiler.
  • the vaporizable fluid in question is therefore fluent water, so that in the description detailed which will be given later, we will place our for the essential in the typical case where the vaporizable fluid considered is water, or at least an aqueous vehicle.
  • a fluid such as water, milk, fruit juices, chemical solutions, etc.
  • the invention can find practical in many other situations whenever you want to cool a fluid, such as water, milk, fruit juices, chemical solutions, etc., in the liquid state at hot temperature, or at least lukewarm, compared to a liquid temperature cold you want to reach to reject it, or, more often to recirculate it at the entrance of the installation in which he warmed up.
  • the installation includes a final condenser, on the steam circuit, which is produced in the form of a surface heat exchanger, that is, hot steam and cold liquid water circulate on either side of a material wall (in general metallic for efficient exchanges through which the transfer takes place thermal.
  • a final condenser on the steam circuit, which is produced in the form of a surface heat exchanger, that is, hot steam and cold liquid water circulate on either side of a material wall (in general metallic for efficient exchanges through which the transfer takes place thermal.
  • the present invention essentially aims to improve conditions thermodynamics and recovery efficiency of thermal energy, to simplify the construction of necessary materials, to reduce costs, both those related to design and installation than those related to operation and maintenance. It applies in particular that we have to recover for recycling the condensed fluid at the state of cooled liquid, or the fluid in gaseous phase, or both.
  • the invention plans to proceed without the least surface exchanger, for at least one last floor of a thermal energy recovery installation from a vaporizable fluid, causing a partial vaporization of the liquid to be cooled in a vacuum enclosure where the vapor is compressed to a pressure vessel, and ensuring recovery of energy by mechanical coupling between two circuits connecting the two speakers which operate in turn repeatedly mass transfer of the vapor phase fluid from the vacuum vessel to the pressure vessel.
  • the mechanical coupling is produced by means of a reciprocating piston in limitation of two additional rooms, in which a suitable set of valves controls a double transfer of mass, alternately and repetitively, assuming the steam out of the first enclosure and pushing it back return of the piston in the second enclosure.
  • a device allowing the implementation of the process which is the subject of the invention therefore comprises two enclosures where different pressures prevail.
  • the organ of mechanical coupling ensuring the transfer is essentially consisting of a double-acting piston cylinder.
  • the piston there separate two complementary rooms which communicate both with the two speakers. Valves of admission and refoulement establish a transfer unidirectional from the first to the second enclosure at during the reciprocating movement of the piston.
  • thermal energy is extracted from the hot liquid by mass transfer from the fluid in gas phase, which passes from the first enclosure to the second enclosure, in which this fluid, always in gas phase, is under pressure.
  • the cooled liquid extract from the first enclosure. It can be recycled.
  • the device 1 essentially comprises three parts: two tanks 2 and 3, respectively delimiting one first chamber called vacuum 20 and a second chamber said to be under pressure 30, due to the fact that in operation, maintains the enclosure 20 under vacuum relative to the second enclosure 30, and a fluid transfer member 4 allowing the two speakers 20 and 30 to communicate according to modalities which will be explained below.
  • a hot fluid in the liquid state that to fix the ideas, we will assume to be hot water, or at least lukewarm, from a downstream installation not shown.
  • a pump 210 ensures the circulation of the liquid in the supply line 21. This opens, inside the enclosure 20 by a nozzle spray 22 or similar boom. Water vaporizes partially in the depressed atmosphere. Water no vaporized 23 meets in the bottom of the enclosure 20, However, part of the mass of water injected into found in the form of water vapor 23 '.
  • the fraction of water 23 not vaporized 23 can be recovered, cooled due to the relaxation undergone, in the bottom of the enclosure 20. It is extracted therefrom either for the reuse in the downstream installation where it heats up and re-inject it through input circuit 21, i.e. for reject, but at low temperature.
  • the evacuation pipe 26 is symbolized by a simple solid line in the figures. There is on this pipe 26 an extraction system 6, illustrated by a pump 60 and a non-return valve 61.
  • enclosure 30 of the second tank 3 communicates with the enclosure 20 of the first tank 2, by means of mechanical coupling illustrated by a cylinder 40 in which a double piston effect 41 moves in translation alternately in one direction and in the other, completed by a set of conduits allowing a double mass transfer from the first enclosure 20 to the second enclosure 30.
  • the piston 41 divides, at any time during its stroke, the internal enclosure of the cylinder 40 in two chambers complementary, respectively an upper room 400 and a lower room 401.
  • Upper room 400 communicates with the upper part of the first enclosure 20, by a first line 24 and an inlet valve 42, arranged at the inlet of the upper chamber 400, and with the upper part of the enclosure 30, by a second pipe 31 and a valve exhaust 43 at the outlet of the upper chamber 400.
  • the lower chamber 401 communicates with the lower part of the first enclosure 20, by a third pipe 25 and a inlet valve 44, arranged at the inlet of the lower chamber 401, and with the lower part of the enclosure 30, by a fourth line 32 and an exhaust valve 45 in exit from the lower chamber 401.
  • the set of intake valves and exhaust requires fluid transfer unidirectional, from the first enclosure 20 to the second enclosure 30, respectively through each chambers of cylinder 40.
  • the piston 41 is driven by machinery 5, comprising a motor (not shown) driving in turn a flywheel 50.
  • the flywheel 50 is mechanically coupled to the piston 41 by a conventional connecting rod assembly 52 and crank 51, connected by an axis 510, so that the piston 41 performs repetitive displacement of translations backward and forwardward alternatives inside of cylinder 40.
  • FIG. 1A a phase of the cycle has been represented during which the piston 41 is pulled down.
  • the valves 42 and 45 are open and valves 43 and 44 closed.
  • the water vapor 23 'produced under reduced pressure is sucked by the piston 41 of the enclosure 20 to the upper chamber 400, via line 24 and the valve intake 42 which contributes to depression in enclosure 20.
  • the contents of the room bass 401 is driven back to enclosure 30 by the movement of the piston down, via the exhaust valve 45 and the conduct 32.
  • FIG. 1B a phase of the cycle has been represented for which the piston 41 is pushed up, the valves 43 and 44 open and valves 42 and 45 closed. he this is a fully dual state from that described opposite of Figure 1B.
  • the process and the effects obtained are quite similar to those just described, the only exception is that upper house 400 plays the role of the lower house 401, and vice versa. It follows that it is lines 25 and 31 which become active in mass transfer from the first to the second enclosure.
  • Line 25 opens into enclosure 20 at a suitable level so as not to suck the liquid at the bottom of tank 23.
  • the shape of its mouth is provided for not to receive a direct flow of liquid, by sprinkling. he is possible, to do this, to give it a form of whistle, the bevelled part of which faces downwards, as suggested by Figures 1A and 1B, or a form similar.
  • the water vapor 23 '(or more generally the fluid in gas phase) extracted from enclosure 20 is transferred to enclosure 30. It is found in this pregnant, still in gaseous form, but at pressure higher than the pressure in enclosure 20.
  • the enclosure 30 opens onto a steam outlet pipe 33. The latter advantageously opens into the lower zone of this enclosure, near the bottom where condensates are collected possible.
  • a drain 34 allows these condensates to be removed.
  • FIG. 2A The industrial installation shown in FIG. 2A essentially comprises three parts: a boiler room Ch producing steam, a unit U in which this steam is used and a device 1 according to the invention, such as that of FIGS. 1A and 1B.
  • FIG. 2A shows only the elements necessary for a good understanding of the invention. The elements common to the previous figures have the same references and will only be described again as necessary.
  • the steam is transmitted from the boiler room Ch to the unit U by one or more supply pipes Ce and the condensates are returned to the boiler room Ch by one or more recycling pipes Cs .
  • Unit U includes a number of machines or devices using the steam produced.
  • the steam supplies a battery of condensers C 1 to C n , arranged in cascade, n being an arbitrary number which depends on the specific application.
  • FIG. 2B schematically illustrates the structure of such a condenser, referenced 7. It is a heat exchanger surface, tube type. It receives steam through a inlet pipe 70 and the condensates are returned by a pipe 71. Cold water is introduced into the tubular circuit via an inlet pipe 73, there heats by heat exchange with the vapor present in the condenser, and comes out through line 72.
  • the condensers C 1 to C n are all similar to the condenser 7.
  • the temperature of the vapor in the pipe Ce entering the condenser C 1
  • the water leaving this condenser via line 21 is typically at a temperature of the order of 40 ° C.
  • this device 1 The operation of this device 1 is identical to what has been described with reference to FIGS. 1A and 1B, and it is unnecessary to repeat it in detail.
  • the hot water, at the outlet of the condenser bank, C 1 to C n is introduced into the enclosure 20 of the tank 2, where it is vaporized at 22.
  • the remaining liquid part 23, at low temperature, is returned to the condenser bank via line 26, fitted with the vacuum extraction device 6 (FIGS. 1A and 1B: pump 60 and non-return valve 61). It traverses these condensers in series in the opposite direction to the supply steam.
  • the part of the sprayed water (at 22) transforming into water vapor 23 ′ is transferred to the enclosure 30 of the second tank 3, under a pressure higher than the pressure prevailing in the enclosure 20. Its temperature also rises.
  • the compressed steam 23 "can then be recycled through line 33 and re-injected at the inlet of the condenser bank, C 1 to C n , rather than being discharged to the atmosphere.
  • the pressure prevailing in the enclosure 20 is very below atmospheric pressure, i.e. 0.017 atm (i.e. 1.72 kPa) for the above conditions.
  • the enthalpy of water vapor at 15 ° C being equal to 588.8 kcal / kg, the amount of steam produced per hour is equal to (750,000 / 588.8), or 1,273 kg / h. It is performed equivalent water make-up in the return circuit (line 26).
  • the water vapor in the enclosure 30 is under a pressure close to atmospheric pressure, therefore much greater than the pressure prevailing in the enclosure 20.
  • the temperature of the water vapor 23 "in the enclosure 30 rises and can reach values typically between 75 and 100 ° C. This 23 "vapor can therefore be recycled by re-injection at the inlet of the unit U (line Ce ), via line 33.
  • the boiler Ch produces steam at a temperature of 75 ° C, under a pressure of 0.39 atm (or 39.5 kPa). After an initialization period, that is to say when the "cruising" speed is reached, with the losses nearly compensated by a production of steam by the boiler Ch , the steam recovered may be sufficient to supply the unit U .
  • the tanks 2 and 3 are produced according to the usual boilermaking techniques in the form of ferrules cylindrical closed by domed bottoms and lids.
  • the diameter of each enclosure is 480 mm and height 1.5 m.
  • the diameter of the pipes 24, 25, 31 and 32 is typically 200 mm.
  • the tanks, 2 and 3, must be waterproof and withstand operating pressures.
  • the diameter of the enclosure of the piston 41, and therefore of the enclosure of the cylinder 40, is 630 mm, and the height of this enclosure is 610 mm.
  • the piston 41 can be animated at a speed of 2 revolutions per second by a drive motor 8 capable of developing a power of the order of 100 kW. A standard 115 kW electric motor can be used.
  • Power is heard here in terms of water flow to be treated per unit of time, or more generally useful fluid circulating in the circuit primary.
  • organ 4 (FIGS. 1A and 1B) also important. This can naturally be obtained, at least theoretically, by increasing the dimensions of the device 1, namely the tank capacities, pipe diameters, cylinder volumes, etc.
  • the device now referenced 1 ′, included two rows of four transfer members.
  • the cylinders of each row are marked a to d , and the two rows are marked arbitrarily, d and g , for "right" and "left".
  • the same conventions have been adopted for the other elements of the device 1 ′ which relate to one or the other of the eight transfer members.
  • the elements common to the previous figures have the same references and they will be described again only as necessary.
  • the first tank is divided into two: tanks 2a and 2b, delimiting the enclosures 20a and 20b. More specifies, in the illustrated configuration, the tank 2a is arranged vertically and it plays the role of tank 2 of the device described above. Line 21 enters the enclosure and it comprises a spray nozzle 22, as before also.
  • the tank 2b is in the form of a cylinder horizontal opening into the enclosure 20a. 20b speaker the tank 2b can have the same diameter as that of the enclosure 20a of the tank 2a. In the same way, the tank 3 is advantageously arranged horizontally, parallel in tank 2b. In reality, the tank 2b constitutes an extension of tank 2a, which allows easier coupling of tanks "primary” and “secondary”, taking into account the structure particular of fluid transfer members.
  • FIG. 3A which shows the "straight" part of the device 1 ′
  • four transfer elements have been shown, referenced 4 ad to 4 dd
  • FIG. 3B in front view, shows the two extreme transfer members, belonging to the right and left rows, that is to say the members 4 dd and 4 dg .
  • Each of these transfer members, 4 ad to 4 dg is quite similar to the single transfer member in FIGS. 1A and 2A. Only the configuration of the supply and extraction pipes is adapted to the particular arrangement in the space of the tanks 2b and 3, on the one hand, and to the location of the transfer members, 4 ad to 4 dg , relative to these tanks, on the other hand.
  • FIG. 1A Only the configuration of the supply and extraction pipes is adapted to the particular arrangement in the space of the tanks 2b and 3, on the one hand, and to the location of the transfer members, 4 ad to 4 dg , relative to these tanks, on the other hand.
  • 3B illustrates the pipes associated with the transfer members 4 dd and 4 dg, namely the pipes 24 dd and 25 dd making the enclosure 20b communicate with the cylinder of the transfer member 4 dd , the pipes 31 dd and 32 dd causing the enclosure 30 to communicate with the cylinder of this same transfer member 4 dd , the pipes 24 dg and 25 dg making the enclosure 20b communicate with the cylinder of the transfer member 4 dg , and the pipes 31 dg and 32 dg making the enclosure 30 communicate with the cylinder of this same transfer member 4 dg .
  • these transfer members, 4 ad to 4 dg include a cylinder and a double-acting piston, as well as two pairs of intake and exhaust valves, one pair for the upper chamber and the other for the chamber. lower. In order not to overload the drawing, these elements have not been referenced individually.
  • the pistons are driven by a four-stage machinery (actually twice four stages), 5 ad to 5 dg, comprising "rod-crank" systems (not explicitly referenced) and flywheels, 53 ad to 53 dg .
  • a single motor 8 drives the assembly, for example and in a conventional manner per se, by means of belts, alternately arranged to the right and to the left of the device 1 ": belts on the right 55 and 57, and on the left 56 and 58.
  • the flywheels, 53 ad to 53 dg are arranged in pairs on common trees, 500 a to 500 d . These trees rotate in pairs of bearings, right and left, 53 ad to 53 dg .
  • the bearings, 53 ad to 53 dg , and the motor 8 are fixed to a lower support Sup of the device 1 ", which can itself be fixed to the ground by any appropriate means (not shown).
  • the overall operation of the device 1 " is entirely similar to that of the device 1, as explained with reference to FIGS. 1A to 1B, and it is unnecessary to redescribe it in detail.
  • the essential advantage of the configuration of the 1 "device, due to the parallel connection of several transfer members, is to be able to process a greater useful fluid flow, without being obliged to inconsiderately increase the dimensions of the constituent elements, at least those of the transfer members, 4 ad to 4 dg, of the piping, and of the parts of the machinery, 5 ad to 5 dg, actuating the pistons.
  • FIG. 4 illustrates, in side view, such a mode of production.
  • the elements common to the previous figures have the same references and will only be described again as needed.
  • the device now referenced 1 ", comprises two parts, or cascade compression stages: e I and e II .
  • the stage e I comprises all the elements of the device 1 ′, except that in the example illustrated in FIG. 4, only three stages of transfer members per row have been provided, for example the members 4 ad to 4 cd, for the right-hand side, with this exception, the operation of this stage is I is strictly identical to that of the device 1 ′ in FIGS. 2A and 2B.
  • the tank of the "secondary" circuit is also divided into two tanks, referenced 3a and 3b.
  • the vaporized water 23 ' is transferred into the enclosure 20b of the tank 2b towards the enclosure 30a of this tank 3a, under a higher pressure than that prevailing in enclosure 20a.
  • the last stage of transfer members that is to say the pair of right and left members, of which only the right member 4'd is visible in the figure 4, has a special role. It connects the enclosure 30a of the tank 3a with the enclosure 30b of the tank 3b. The transfer of steam 23 "a takes place again with an increase in the compression ratio (steam 23" b). Also, the upper and lower chambers (not shown) of the cylinders of the pair of transfer members of the last stage e II , communicate with the enclosure 30a via two pipes, 24'd and 25'd, respectively . Likewise, these upper and lower chambers communicate with the enclosure 30b via two conduits, 31'd and 32'd, respectively.
  • the driving machinery is strictly identical to that described with reference to FIGS. 3A and 3B.
  • the process of the invention is entirely compatible with medium or small power installations, or even with domestic installations and / or appliances.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
EP99401868A 1998-07-23 1999-07-23 Wärmeaustauschverfahren mit Energierückgewinnung für verdampfungsfähige Flüssigkeit und Vorrichtung zur Durchführung dieses Verfahren Expired - Lifetime EP0974802B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9809404A FR2781563B1 (fr) 1998-07-23 1998-07-23 Procede de transfert d'energie thermique a partir d'un fluide et installation mettant en oeuvre ce procede
FR9809404 1998-07-23

Publications (2)

Publication Number Publication Date
EP0974802A1 true EP0974802A1 (de) 2000-01-26
EP0974802B1 EP0974802B1 (de) 2003-02-19

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EP99401868A Expired - Lifetime EP0974802B1 (de) 1998-07-23 1999-07-23 Wärmeaustauschverfahren mit Energierückgewinnung für verdampfungsfähige Flüssigkeit und Vorrichtung zur Durchführung dieses Verfahren

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EP (1) EP0974802B1 (de)
AT (1) ATE232958T1 (de)
DE (1) DE69905433D1 (de)
FR (1) FR2781563B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008027825A1 (de) * 2008-06-11 2009-12-17 Thermea. Energiesysteme Gmbh Verfahren und Anordnung zur Erzeugung von Wasserdampf

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008009005B9 (de) * 2008-02-13 2009-07-30 Ferngas Nordbayern Gmbh Vorrichtung zur Umwandlung von in einem Fluid enthaltener thermodynamischer Energie in mechanische Arbeit

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR719413A (fr) * 1931-07-02 1932-02-05 Metallgesellschaft Ag Installation pour la réfrigération de liquides par auto-évaporation fractionnée dans le vide
GB687548A (en) * 1948-04-17 1953-02-18 Rateau Soc Improvements in or relating to gas turbine plants
GB967675A (en) * 1961-11-08 1964-08-26 Shell Int Research Method of cooling water and apparatus therefore
EP0042308A1 (de) * 1980-06-18 1981-12-23 Mitsubishi Gas Chemical Company, Inc. Methode zur Wärmerückgewinnung
US4323109A (en) * 1979-08-27 1982-04-06 General Electric Company Open cycle heat pump system and process for transferring heat
DE3213415A1 (de) * 1981-04-13 1982-10-28 Aktieselskabet Thomas Ths. Sabroe & Co., 8270 Hoejbjerg Verfahren zur verwendung von kaltem wasser als waermeabgebendes medium fuer ein waermepumpensystem sowie system zur durchfuehrung dieses verfahrens
DE3302064A1 (de) * 1982-01-26 1983-08-04 Israel Desalination Engineering (Zarchin Process) Ltd., Tel-Aviv Dampfkompressionswaermepumpe
US4413669A (en) * 1980-05-20 1983-11-08 Escher Wyss Limited Method of heat extraction from an aqueous carrier medium
US4779427A (en) * 1988-01-22 1988-10-25 E. Squared Incorporated Heat actuated heat pump
CH686115A5 (de) * 1994-08-18 1996-01-15 Franz Disler Abdampf/Bruden-Verdichter fur Wormeruckgewinnung in Eindampfanlagen.

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR719413A (fr) * 1931-07-02 1932-02-05 Metallgesellschaft Ag Installation pour la réfrigération de liquides par auto-évaporation fractionnée dans le vide
GB687548A (en) * 1948-04-17 1953-02-18 Rateau Soc Improvements in or relating to gas turbine plants
GB967675A (en) * 1961-11-08 1964-08-26 Shell Int Research Method of cooling water and apparatus therefore
US4323109A (en) * 1979-08-27 1982-04-06 General Electric Company Open cycle heat pump system and process for transferring heat
US4413669A (en) * 1980-05-20 1983-11-08 Escher Wyss Limited Method of heat extraction from an aqueous carrier medium
EP0042308A1 (de) * 1980-06-18 1981-12-23 Mitsubishi Gas Chemical Company, Inc. Methode zur Wärmerückgewinnung
DE3213415A1 (de) * 1981-04-13 1982-10-28 Aktieselskabet Thomas Ths. Sabroe & Co., 8270 Hoejbjerg Verfahren zur verwendung von kaltem wasser als waermeabgebendes medium fuer ein waermepumpensystem sowie system zur durchfuehrung dieses verfahrens
DE3302064A1 (de) * 1982-01-26 1983-08-04 Israel Desalination Engineering (Zarchin Process) Ltd., Tel-Aviv Dampfkompressionswaermepumpe
US4779427A (en) * 1988-01-22 1988-10-25 E. Squared Incorporated Heat actuated heat pump
CH686115A5 (de) * 1994-08-18 1996-01-15 Franz Disler Abdampf/Bruden-Verdichter fur Wormeruckgewinnung in Eindampfanlagen.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008027825A1 (de) * 2008-06-11 2009-12-17 Thermea. Energiesysteme Gmbh Verfahren und Anordnung zur Erzeugung von Wasserdampf

Also Published As

Publication number Publication date
EP0974802B1 (de) 2003-02-19
ATE232958T1 (de) 2003-03-15
FR2781563A1 (fr) 2000-01-28
DE69905433D1 (de) 2003-03-27
FR2781563B1 (fr) 2000-10-06

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