WO1997027401A1 - Convertisseurs d'energie hydrodynamique asymetrique - Google Patents
Convertisseurs d'energie hydrodynamique asymetrique Download PDFInfo
- Publication number
- WO1997027401A1 WO1997027401A1 PCT/FR1997/000095 FR9700095W WO9727401A1 WO 1997027401 A1 WO1997027401 A1 WO 1997027401A1 FR 9700095 W FR9700095 W FR 9700095W WO 9727401 A1 WO9727401 A1 WO 9727401A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chain
- fluid
- wheel
- tanks
- tank
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/10—Alleged perpetua mobilia
Definitions
- the present invention relates to a set of devices making it possible to convert, - I would therefore call them "converters * - one or more sources of thermal energy, and in particular solar energy either alone or in combination with a fuel, into motive energy and, or, electric. 5 ⁇
- this set of converters can reserve, in the form of potential energy, before transformation into electrical energy; all or part of the useful thermal solar energy; for a unlimited duration, economically and without loss over time.
- the set of converters, objects of this invention makes it possible to transform a source of heat, of thermal energy, into motive and, (or), electrical energy, without having the drawbacks associated with conventional power plants.
- the irregularity of sunshine is therefore no longer an obstacle to the use of solar energy.
- it can store, without time limit or energy loss, in the form of potential energy, solar energy, stored in period of sunshine, to restore it, for example at night, or in the absence of sun.
- the converters can operate continuously; they will then be of the "wheel” or “chain” type, somewhat pronounced of the appearance of a noria, they can operate during the day with solar energy and at night
- a particularly simple "pendulum" embodiment with alternating operation Phases where the pendulum is loaded with potential energy, alternating with phases where it restores this usable energy; either immediately, at the end of storage; * ⁇ 0 either later, with no time limit, depending on the motor and / or electrical energy needs; is particularly suited to a developing country with low technological resources.
- the "pendulum” type can be used without the "chain * or” wheel "type by having low storage pendulums operating during the day; associated with more storage pendulums
- the pendulum type however, has the disadvantage of an alternative operation and not continuous like the chain or the wheel, hey at a ratio, output-size, less favorable than that of the chain and the wheel, but compensated by a simpler design, and therefore a lower cost; its simplicity of design could very well; although it is not the aim, to transform a simple wood fire into electrical energy ⁇ 7
- ⁇ Q can operate only on solar energy, all three can be supplied by several energy sources, either simultaneously, one energy in addition to another, or alternately; which is particularly interesting in the case of solar energy.
- the sun can be focused ⁇ * y by orientable mirrors or heliostats or by paraboloid mirrors, within a hearth, which can also be heated; either in addition to solar energy, or exclusively, by another source of energy, gas, fuel or other.
- the three types of converters can also, in association for example with a hydraulic power station, a water tower; or by supplying a 9-0 electrolyser producing hydrogen; put transformed solar energy, in reserve for an indefinite period.
- thermo fluid In contact with the hearth a fluid is heated (I would call it for this reason "thermal fluid") so as to be vaporized, so that the vapor pressure thus created
- pendulum consists of a pendulum, consisting of a tube connecting two tanks located in opposition at each end of the tube, and therefore of the pendulum; one of the tanks located at one end is higher than the other which is, for example, placed on the ground.
- the pendulum rests, by a point of rotation, a horizontal axis, around which it can tilt in a vertical plane; on a frame anchored to
- the bottom balance tank In the initial position, the bottom balance tank is full of weight fluid; the high tank is empty, but in depression, because the vapor which was there it is condensed; the
- the weight fluid, contained in the low reservoir, is separated, by a piston, from a fluid
- thermo ff which is heated and thus partially vaporized so as to create a pressure, which, combined with the depression, due to the condensation of the vapor, prevailing in the high tank, is sufficient to push the piston and thus expel the liquid weight; from the low tank to the high tank. Closing a valve prevents the weight liquid from going back down; it then suffices to unlock the balance wheel - either immediately or several
- This pendulum system of very simple design, is particularly intended for occasional use; it is particularly aimed at countries with low technological resources for which it can provide an introduction to the production and use of electricity, without the cost of photovoltaic sensors and with better
- Each radius of the wheel is therefore composed of a tube connecting two reservoirs, each located at one end of the tube, the middle of which merges with the axis of rotation of the wheel; the axis of rotation is horizontal and rests on a frame anchored to the ground, each radius (diameter) of the wheel being able, together with all the others
- ZT diameters depending on the rotation of the wheel, occupy a vertical, horizontal, and all intermediate positions.
- each of the diameters is identical to that of a balance described above. If we consider a diameter of the wheel, which arrives, by rotation around its axis, in the vertical position, its low reservoir corresponds to the lowest point
- a particular adaptation to the wheel, which will also allow the chain to be produced; consists in replacing the tubes (diameters) connecting the opposite tanks, by a peripheral pipe connecting all the tanks together, which will be connected to
- this pipe by means of a valve, opened at the appropriate time to allow the fluid weight of the reservoir arriving at the lowest point, to pour into the reservoir arriving at the highest point.
- This set of means makes it possible to produce a thermal power station, the energy of which transformed into mechanical energy can be either used directly, for example for pumping, or directly transformed into electrical energy.
- the chain which functions like the wheel, has the general appearance of a noria, of the type that we see, for example, in the south of Spain, which are generally actuated by a draft animal and which are used to raise the water from a well.
- the resemblance must be reinterpreted, because in the case of these norias it is the full cups 1 ⁇ which go up, filled with water from the well, and the empty cups which go down.
- the "chain” which interests us here, it will be the opposite - the full buckets go down, and the voids go up -, but the image of the noria is interesting to facilitate the understanding of the functioning of the chain.
- the buckets of the noria are replaced, on the chain object of this iyO invention, by reservoirs, of the type of those which equip the balance wheel or the wheel, which is discussed above.
- the vapor pressure, inside the full tank arriving at the bottom of the chain, will drive the weight fluid contained in this tank, towards an empty tank and in depression arriving simultaneously at the top of the chain; these two tanks being connected by a peripheral pipe, having the same function as that of the wheel, are brought into communication by the appropriate opening of valves, which is provided with each tank-peripheral pipe connection.
- the descending tanks are thus always kept full, while the rising tanks are simultaneously kept empty; so that the chain is always heavier on one side than the other, which forces it to turn; this rotation can be used to set an alternator in motion and thus produce electric current.
- the chain even more than the wheel; or a set of chains, operating in parallel cr, are really quite indicated to constitute true thermal power stations, and quite particularly solar.
- a water tower can replace it with the advantage of being able to operate in a closed circuit, without loss; we can also transform the electric current thus produced into
- the chain is particularly well suited to be used directly as a thermal water pump, including solar, and to store in hydraulic form, for example, solar energy, reusable at will, as needed.
- the wheel and especially the chain can also function, partially to produce energy, for example by running an alternator, and at the same time put a certain amount of energy in reserve by functioning as a pump.
- This is possible, for example in the case of the chain, by letting down certain full tanks, arriving at the top of the chain; (for example two tanks on
- ⁇ chain and wheel to add a circuit containing a coolant, comprising a phase where the coolant cools the tanks, to condense the vapor they contain, phase during which the coolant heats up ; and a cooling phase of the same liquid during which it can, at first, transfer part of its heat to the cylinders ⁇ ⁇ 0 (tanks fitted with a piston) during their heating period; to then be completely cooled, either by direct heat exchange with the ambient medium, or by means of a secondary cooling liquid which will then be cooled by heat exchange with the ambient medium.
- no amount of water whether liquid or in the form of
- the tanks can be pressurized directly, by heating the fluid weight they contain; which in this case also plays the role of thermal fluid, and is partially X 'o vaporized; this is of a particularly simple construction and maintenance, which has, in itself, an advantage, but however requires that the tanks rotate in such a way, that at the time of the expulsion of the weight fluid, the latter is on the side of the tank valve; since it is heavier than the vapor which overcomes it, which must therefore always occupy the top of the tank.
- each tank in two by a piston, on one side of which is the weight fluid, on the side of the outlet valve; and on the other side of the piston, the thermal fluid, on the side of the hearth.
- the tanks become cylinders each provided with a piston, which technologically implies a perfect seal between the piston and the walls of the cylinder; inconvenience that can be overcome in
- the tanks can be of different shapes, adapted to the type of operation chosen, balance, wheel, chain, with or without piston, with piston or flexible membrane.
- the boiler and the hearth can be integrated in different ways to the tanks, or separated according to whether one chooses solar energy, a solid fuel or liquid, a solar-fuel association etc.
- FIG. 1 illustrates the operating mode, of the pendulum type.
- Figure 2 illustrates the mode of operation of the chain type.
- Figure 3 is a close-up of a section taken in a vertical plane, perpendicular to the representation of Figure 2, at the level where a tank arrives - ⁇ Q exactly vertical to the pulley supporting the chain.
- FIG 4 is a simplified embodiment of the chain, in this particular case, thermal fluid and weight fluid are combined; in this drawing the cooling system is not shown, any more than the boiler and the hearth.
- FIG. 5 is a close-up of a particular type of tank, known as a pendulum, and within which the piston has been replaced by a double sealing membrane enclosing an insulator.
- Figure ⁇ is a close-up circled in Figure 2.
- Figure 1 illustrates the operation of the pendulum.
- the balance consists of a tube (33) closed by a valve (20) connecting together two tanks (2) forming a cylinder because enclosing a piston (8); the starting position of the balance corresponds to position A; it is supported on its horizontal axis (22) placed on J2..J- the frame (31) integral with the ground (32); the pendulum is locked in this position, so that it cannot tilt; the low reservoir, corresponding to this position, is named A 1b; (position A, state 1, situation b, for low).
- the upper tank (h) is, for the same reasons, named A1h.
- the reservoir Alb is full of the weight fluid (1); the thermal fluid (4) is largely vaporized (3), (the heat source -solar, 3C »combustible, etc.- as well as the hearth are not represented), the vapor pressure (3) is very strong .
- the balance tank Alh is empty, the vapor it contained has been condensed, it has returned to the i ⁇ qu ⁇ de state (4), a vacuum, a vacuum (5) prevails within the tank.
- the valve (20) is still closed; as soon as this valve is opened, under the effect of the strong thrust of the vapor pressure (3) within the reservoir Alb, and ⁇ simultaneously, of the vacuum (5) prevailing within the reservoir Alh, the piston (8) will drive the weight fluid (1) from the reservoir Alb; which will go back into the Alh tank and fill it; as soon as this operation is completed, the valve (20) is closed.
- the balance can remain in this position as long as it remains locked, but the content of the tanks is no longer the same, neither is the position of the pistons;
- the tank A1b has gone to state 2
- the reservoir A1h which during this time has passed to the state A2h, is much heavier, since the vacuum (5) which it contained has been replaced by the fluid weight (1); the thermal fluid (4) has been pushed back to the end of the tank. i ⁇
- the pendulum is now in unstable equilibrium; the heaviest tank being at the top, the lightest at the bottom, it is charged with potential energy, it can remain thus until we need this energy, it is enough to unlock it so that it rocks and releases this potential energy, we can then use this rotation around the axis (22) to, for example, rotate an alternator.
- the balance then moves to position B; the
- the chain type described below, or the * *> £ “ wheel” type will be more interesting; especially the chain type, especially by associating it with a water reserve to store potential energy; the wheel is the chain can either be used as a pump (water, for example), or to run an alternator, or do both simultaneously, with the same wheel, or the same chain. part of the useful energy can be converted in electricity, the other part can be stored, for example in a water reserve, to be used later; which makes large solar power plants quite achievable, without suffering the hazards due to the irregularity of the sunshine.
- FIG. 2 illustrates the operation of the chain
- FIG. 3 illustrates a 5 "section made along a vertical plane, perpendicular to the sheet of paper representing FIG. 2, at the level where a tank is located exactly vertically above the pulley (23); in this figure 3, the weight fluid is not shown, the primary coolant (12) is shown, as regards the cooling circuit around the cylinder, only in the tube (11 ) bearing this reference 12.
- the chain consists of a supporting structure (24) suspended from a pulley (23) which can rotate about a horizontal axis (22) placed on a frame (not shown) integral with the self; the axis (22) of the pulley (23) rests
- the fluid weight (1) filling the tanks which I would call HERE cylinders (2) because they are equipped with a piston (8), is; when a cylinder arrives at the bottom of the chain (2 down), raised, by a pressure difference; passing through a peripheral pipe (6), opened by means of a valve (7); in the cylinder (2 above) arriving at the top of the i j O channel, the corresponding valve (7) is simultaneously opened; all the other valves in this circuit are closed (example 20); only the cylinders (2 low) and (2 high) are connected by the pipe ( ⁇ ), the content of the other cylinders is isolated.
- the weight fluid (1) is raised from the reservoir (2 bottom), by a pressure exerted, here, by the vapor (3) of a thermal fluid (4) heated in a boiler (9) contiguous to
- each cylinder (2bas) is replaced by the following one, and it is the same for the cylinder (2haut); and each time a cylinder occupies the respective positions (2 low) and (2 high); the operation described above, namely, the filling of the cylinder (2 high) with the weight fluid (1) from which the cylinder (2 bottom) is emptied, is repeated.
- the cylinders (2) on the 5 " side descending from the chain are always kept full of the weight fluid (1), while those on the ascending side being emptied of the weight liquid and filled with steam (3) are much lighter.
- the chain thus kept permanently always heavier on one side than on the other, is forced to turn.
- the opening of these valves (19) ensures a double circulation of the primary coolant (12):
- the primary coolant heats up. It cools during the second circulation in the spiral (14) which is in the opposite direction to the first circulation, that is to say in the same direction as the rotation of the chain, the circulation of this primary coolant will be provided by a pump or circulator.
- the secondary valves (19) are only opened twice: when they occupy the respective positions corresponding to the tank (2 top) and the tank * T (2 top, Figure 2); outside the respective positions of these two tanks they are closed.
- a valve In order to prevent the primary coolant from short-circuiting the circulation of the spiral by joining these two reservoirs by the shortest route, and in order to force it to take the longest route; a valve, or a simple valve (91, f ⁇ g.6) is located on the
- valves (91) As such junctions. All of its valves will be permanently open except one; that corresponding to the junction of the tank (2 first, top, figure 2). Each time a valve (91) arrives in the position relative to this tank; it closes, to open again, at the moment when the next reservoir arrives in the position
- All these valves can be of electromagnetic types with centralized electronic controls, with the exception of the balance valve which can, 1 t * possibly, be manual.
- the primary coolant (12) In the first phase of the first circulation, the primary coolant (12) is cold, it cools the steam-filled cylinders on the rising side of the chain in order to allow the condensation of the steam (3) and thus allow the drop in
- the secondary coolant (13) due to the force of gravity it is simply kept at the bottom of its confinement enclosure (16); by passing within it the absorbent surface (15) of the spiral (14) is impregnated therewith; its all evaporating
- % D (15) with which the spiral is provided; the pressure within the containment (16) can be lowered and adjusted depending on the nature of the secondary coolant (13); itself chosen as a function of the outside temperature at the level of the condensation fins (17); these different choices conditioning that of the primary coolant (12).
- the fluid weight (1) and the thermal fluid (4) are separate; and separated by a piston (8); this can make it possible to choose a particularly dense weight fluid; which allows, for equal performance, to make shorter chains; and to choose a different thermal fluid according to its thermal qualities.
- the weight fluid (1) and the thermal fluid (4) are combined; in this case it is not necessary to have a piston; construction and maintenance are found to be simplified; but with equivalent production with the previous embodiment; the energy consumption can be greater because it is necessary to HERE all the liquid weight HERE.
- the 3f cooling circuit is not represented; it can be designed according to the same principle as that described above and concerning the embodiment of FIG. 2.
- an insulating and flexible structure 21, fig.
- Figure (5) illustrates the principle of a particular embodiment of one of the reservoirs (2), which can be used in the case of the pendulum, wheel or chain; this is indeed pendulum, it is suspended from a bracket (26) by an axis (27) around which it can oscillate in a controlled manner, which can be locked in the position
- the advantage of this particular configuration is to allow the boiler (9) to be, by pivoting the tank (2) around the axis (27) always at the lowest point of the tank ; as the thermal fluid (4) is; due to gravity, also always at the lowest point of the tank, this allows the thermal fluid to be at the heart of the boiler (9) located above the hearth (10).
- the boiler moreover, has a heat exchanger lo (28) in the shape of a fir tree in order to increase the surface of exchange between the heat of the hearth (10) and the thermal fluid (4).
- the tank can then be tilted and locked in the best position.
- a junction tube (30) connects the tank (2) to the peripheral pipe (6) not shown in this figure 5.
- the height of the chains, and the size of the tanks are essentially a function of the 7 ⁇ pressure available, depending on the heat source used, and the desired energy production. Since the size of the tanks also determines their cooling time and the intensity of the vacuum available in the tanks arriving at the top of the chains; it is preferable, at equal volume, to have several small tanks, rather than a single large one.
- This set of energy converters, balance wheel, wheel and chain, is essentially intended to produce electric current, by eliminating the nuisances associated with conventional thermal power stations; it was more particularly imagined for the rational use of solar energy; can thus be done without any pollution.
- Sets of chains 100 meters high can operate with ⁇ 2 ⁇ only 10 times atmospheric pressure, which can be achieved with a thermal fluid as common as water, with temperatures fully compatible with mirrors parabolic solar panels.
- converters are mainly intended for developing countries; but may be of interest to industrialized countries in the context of reducing air pollution.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97901113A EP0877862A1 (fr) | 1996-01-22 | 1997-01-17 | Convertisseurs d'energie hydrodynamique asymetrique |
AU35228/97A AU3522897A (en) | 1996-01-22 | 1997-01-17 | Asymmetrical hydrodynamic energy converter |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR96/00897 | 1996-01-22 | ||
FR9600897 | 1996-01-22 | ||
FR96/01575 | 1996-02-05 | ||
FR9601575 | 1996-02-08 | ||
FR9615683A FR2757897B1 (fr) | 1996-01-22 | 1996-12-16 | Convertisseurs d'energies hydrodynamiques asymetriques |
FR96/15683 | 1996-12-16 | ||
FR9707395A FR2757904A1 (fr) | 1996-01-22 | 1997-06-10 | Convertisseur d'energie d'hydrodynamique asymetrique |
FR9710523A FR2757905A1 (fr) | 1996-01-22 | 1997-08-19 | Convertisseurs d'energie hydrodynamiques asymetriques |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997027401A1 true WO1997027401A1 (fr) | 1997-07-31 |
Family
ID=42575826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1997/000095 WO1997027401A1 (fr) | 1996-01-22 | 1997-01-17 | Convertisseurs d'energie hydrodynamique asymetrique |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0877862A1 (fr) |
AU (1) | AU3522897A (fr) |
FR (3) | FR2757897B1 (fr) |
WO (1) | WO1997027401A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999063220A1 (fr) * | 1998-06-03 | 1999-12-09 | Daniel Masse | Convertisseurs d'energie thermique a rendement ameliore |
US7080509B2 (en) * | 2004-12-27 | 2006-07-25 | Ezra Shimshi | System for obtaining rotational energy from ambient forces |
WO2011057402A1 (fr) | 2009-11-15 | 2011-05-19 | Dyverga Energy Corporation | Moteurs rotatifs à faible température différentielle |
CN106286164A (zh) * | 2016-09-13 | 2017-01-04 | 天津大学 | 一种摇摆式低速流体发电机 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3659416A (en) * | 1970-07-14 | 1972-05-02 | Harold Brown | Vapor driven motors |
US4074534A (en) * | 1977-02-03 | 1978-02-21 | Morgan Wesley W | Thermodynamic motor |
US4202178A (en) * | 1978-06-23 | 1980-05-13 | Peterman Paul L | Low-boiling liquid apparatus |
GB2128258A (en) * | 1982-10-06 | 1984-04-26 | Sorelec | Gravity actuated thermal motor |
FR2544382A2 (fr) * | 1982-10-06 | 1984-10-19 | Sorelec | Moteur rotatif |
FR2570441A1 (fr) * | 1984-09-14 | 1986-03-21 | Strydom Moses | Moteur rotatif utilisant les actions de la vaporisation et de l'attraction terrestre sur un fluide thermodynamique |
-
1996
- 1996-12-16 FR FR9615683A patent/FR2757897B1/fr not_active Expired - Fee Related
-
1997
- 1997-01-17 EP EP97901113A patent/EP0877862A1/fr not_active Withdrawn
- 1997-01-17 AU AU35228/97A patent/AU3522897A/en not_active Abandoned
- 1997-01-17 WO PCT/FR1997/000095 patent/WO1997027401A1/fr not_active Application Discontinuation
- 1997-06-10 FR FR9707395A patent/FR2757904A1/fr active Pending
- 1997-08-19 FR FR9710523A patent/FR2757905A1/fr active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3659416A (en) * | 1970-07-14 | 1972-05-02 | Harold Brown | Vapor driven motors |
US4074534A (en) * | 1977-02-03 | 1978-02-21 | Morgan Wesley W | Thermodynamic motor |
US4202178A (en) * | 1978-06-23 | 1980-05-13 | Peterman Paul L | Low-boiling liquid apparatus |
GB2128258A (en) * | 1982-10-06 | 1984-04-26 | Sorelec | Gravity actuated thermal motor |
FR2544382A2 (fr) * | 1982-10-06 | 1984-10-19 | Sorelec | Moteur rotatif |
FR2570441A1 (fr) * | 1984-09-14 | 1986-03-21 | Strydom Moses | Moteur rotatif utilisant les actions de la vaporisation et de l'attraction terrestre sur un fluide thermodynamique |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999063220A1 (fr) * | 1998-06-03 | 1999-12-09 | Daniel Masse | Convertisseurs d'energie thermique a rendement ameliore |
FR2779487A1 (fr) | 1998-06-03 | 1999-12-10 | Daniel Masse | Centrale hydro-thermo-electrique a cheminee de vapeur sous vide et convertisseurs d'energie hydrodynamiques asymetriques |
US7080509B2 (en) * | 2004-12-27 | 2006-07-25 | Ezra Shimshi | System for obtaining rotational energy from ambient forces |
WO2011057402A1 (fr) | 2009-11-15 | 2011-05-19 | Dyverga Energy Corporation | Moteurs rotatifs à faible température différentielle |
EP2499365A1 (fr) * | 2009-11-15 | 2012-09-19 | Dyverga Energy Corporation | Moteurs rotatifs à faible température différentielle |
JP2013510981A (ja) * | 2009-11-15 | 2013-03-28 | ダイヴァーガ・エナジー・コーポレーション | 低差温回転エンジン |
EP2499365A4 (fr) * | 2009-11-15 | 2014-05-21 | Dyverga Energy Corp | Moteurs rotatifs à faible température différentielle |
CN106286164A (zh) * | 2016-09-13 | 2017-01-04 | 天津大学 | 一种摇摆式低速流体发电机 |
Also Published As
Publication number | Publication date |
---|---|
FR2757897B1 (fr) | 1999-03-26 |
FR2757904A1 (fr) | 1998-07-03 |
EP0877862A1 (fr) | 1998-11-18 |
FR2757905A1 (fr) | 1998-07-03 |
AU3522897A (en) | 1997-08-20 |
FR2757897A1 (fr) | 1998-07-03 |
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