WO2015092769A2 - The system of increasing the efficiency of rail linear turbine with piston and flexible vanes - Google Patents
The system of increasing the efficiency of rail linear turbine with piston and flexible vanes Download PDFInfo
- Publication number
- WO2015092769A2 WO2015092769A2 PCT/IB2014/067174 IB2014067174W WO2015092769A2 WO 2015092769 A2 WO2015092769 A2 WO 2015092769A2 IB 2014067174 W IB2014067174 W IB 2014067174W WO 2015092769 A2 WO2015092769 A2 WO 2015092769A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vanes
- turbine
- rowing
- vane
- water
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B29/00—Safety devices of escalators or moving walkways
- B66B29/005—Applications of security monitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B25/00—Control of escalators or moving walkways
- B66B25/003—Methods or algorithms therefor
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- 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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
- F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
- F03B13/1805—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem
- F03B13/1825—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for 360° rotation
- F03B13/1835—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for 360° rotation of an endless-belt type wom
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- 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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B17/00—Other machines or engines
- F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
- F03B17/062—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction
- F03B17/063—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction the flow engaging parts having no movement relative to the rotor during its rotation
- F03B17/064—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction the flow engaging parts having no movement relative to the rotor during its rotation and a rotor of the endless-chain type
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- 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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B17/00—Other machines or engines
- F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
- F03B17/062—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction
- F03B17/065—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction the flow engaging parts having a cyclic movement relative to the rotor during its rotation
- F03B17/066—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction the flow engaging parts having a cyclic movement relative to the rotor during its rotation and a rotor of the endless-chain type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
The efficiency rises in liner rail turbine with piston and flexible vanes which its rowing vanes are placed on the longitudinal axis of turbine in a radial and perpendicular manner and as a result of stroke with fluid receive its energy and transfer it to augmentative gearbox by chain, shaft, bearing and finally to the generator in order to turn it into electricity. In order to facilitate the rotation of vanes and strengthen them against fluid flow, an orbital path in the form of a geometrical stadium is used at both sides of turbine. In this turbine, in order to extract the energy, the longitudinal axis of turbine which is also horizontal must be put at the end of fluid flow which makes the strike of fluid flow to the vanes to be direct and perpendicular. Using rowing vanes with flexible blades decreases the waste of energy obtained from the fluid to overcome drag force exerted on the vanes and finally the efficiency of turning the fluid kinesthetic energy to rotational energy increases.
Description
THE SYSTEM OF INCREASING THE EFFICIENCY OF RAIL LINEAR TURBINE WITH PISTON AND FLEXIBLE VANES
Invention description
The technical background of invention
Technical background of the invention is related to designing the mechanical systems which are in contact with fluid
The state of previous technological knowledge
Currently there are various water turbines with different structures and performances. In one of the present methods, water flow and the power resulted from ebb and flow in the oceans and seas is used for generating electric energy by using the masts and vanes similar to what are used in the old wind turbines. In this structure the vanes are very similar to buffer structure in wind turbines, but with some changes in designing the kind of vanes. The patent number US6652221B1 refers to these kinds of turbines which require high costs as well as giant structures. Another form of water turbines is turbines with transverse horizontal axis around which the vanes are arranged and the longitudinal axis of turbine is perpendicular to water flow. The patent number US8497594B2 refers to one of these kinds of turbines. Gurlu Spiral turbines are also considered as these kinds of turbines in which the vanes are spiral and rotation torque is created as a result of the rotation of these vanes with water flow. Patent number US5451137 describes these kinds of turbines. This system also requires high cost and knowledge to be produced and for the vanes to be designed and installed deep in the oceans and seas.
In order to exploit water flow energy, other systems have also been designed. Patents number WO2013038721 Al and WO2014065282A1 explain them. Using a float like
a ship on which all parts of this system are placed, turbine vanes are plunged into the water. These vanes are usually similar to the wheels of Glosbe except for the fact that they are perpendicular on water surface and their arrangements on cables or attached chains are annular. At the end of the chains some gear wheels are installed which cause the rotation in the vanes. We can consider the high cost of it for floatation as a drawback and the whole system is costly and enormous.
Another kind of water turbine is known as linear water turbine. This system may be the most similar case to this invention; however it also has major differences with this system. In this system, as it was mentioned in patents number WO2013038721A1 and WO2014065282A1, the vanes are similar to the vanes of Glosbe wheel but with a further width and distance and they are plunged into the water while arranged on the cables or annular attached chains in a dangling manner and perpendicular to water surface. When this system is put into the water, the water flow is blocked and deviated because of vane angle and a reactionary power is exerted on the vanes. This power is controlled through the cable traction and the latitude parts of turbine rotate around the axis. This rotation is used to produce electricity with generator. The main problem of this system is a change in efficiency regarding the depth of water in different parts of the river and it cannot be used in sea.
The patent number US 642022 refers to a type of chained turbine in which arch paddle-shaped vanes are used. They are placed near each other and mounted on the chain by rigid connection. We can state the differences between this invention and the mentioned one in the following cases. The type of vanes and their connections are different in both of the inventions. In the mentioned invention, the longitudinal axis of turbine is placed perpendicular to water flow of the river. Using the structures and guiding routes such as pipes and tools like that, it leads the river in a way that
the water hits the vanes with the angle of about 45 degrees while in the present invention, first of all the longitudinal axis of turbine is in line with the fluid flow of route and the flow hits the vanes directly and without any kinds of intermediate and reduces the complexity of system as well as extra tools. The mentioned invention is designed only for rivers and water pathways such as sewage, but a structure for leading water to hit the vanes must be designed on it. Actually this structure creates a cascade manner by which water hits the vanes in specific paths. In the mentioned invention the rotation of vanes is done in a rectangular frame which causes the vanes to move in a longer path. Consequently, energy is used to raise the vanes, which can decrease the efficiency of generating energy. The mentioned invention cannot be used to extract energy from the waves but this invention has this potentiality. Based on the proven rules of physics, the efficiency in the mentioned invention in which the water hits the vanes at 45 degree angle is less than the present invention in which fluid flow hits the water directly and at 90 degree angle.
Providing a solution for the present technical problem
In this invention, we try to overcome the available problems in the previous knowledge by inventing a new product. The first solution is to offer a new system in water turbine section which can be applied for extracting kinesthetic energy of seas and rivers or wherever a fluid flow is available. In this invention, we attempt to increase the general efficiency of the system by designing flexible blades in vanes to reduce some of fluid kinesthetic energy to oppose drag energy. The main innovation is to design a turbine which can be in line and in parallel to the direction of fluid flow for optimized use of direct flow of fluid.
Moreover, in this invention the depreciation of device has decreased by using fenders. This invention has more advantages compared to available linear turbines
because of its use in the seas and also in the rivers for extracting the energy of waves and river flow in different methods and more efficiency respectively.
Figures
Figure 1 in which the general three-dimensional view of turbine with all of its segments is shown.
Figure 2 in which the three-dimensional view of the turbine rear is shown. Figure 3 using the turbine in the beach.
Figure description
As it is represented in figures 1 and 2, this turbine has a main chassis (1), on which all of turbine segments are installed. Rowing vane (10) includes plate-shaped vane (9), flexible rowing blades (20) and the main frame (19). The plate-shaped vane (9) is connected in front of the main frame toward the flow direction. The flexible rowing blades (20) are vertically connected to the main frame (19) by swing connection (21). Fender (8) is connected to lateral basis (22) on one side and rostral chain (2) on the other side. The main frame of vane (19) is connected to lateral basis, fender (8) acts as shock absorber of the car when the waves or the extreme flow of water hit vanes and reduces the strokes resulted from them and it decreases the severity of strokes as well as the depreciation of the machine. The path of paddle movement is like an orbit in the geometrical shape of a stadium (6) which is dragged around the longitudinal axis of turbine and it is located at both sides of it and it is also connected to the main chassis (1). The vanes are mounted on the upper and lower side of orbital path (6) by latitude stands (7) which are at the end of roll bearing. Through this connection and wheel chain (3), swirling will be possible.
Wheel chain (3) is placed at both ends of turbine by a shaft (4) which is hold by a bearing (5). It transfers the rotational energy resulted from the movement of vanes to an augmentative gearbox (11) by a strap and brings it to the generator (12). The applied gearbox (11) is augmentative which can provide the necessary speed for the generator even when the rotational speed of the vanes is low. Finny chassis (13) which is connected to the turbine at the end of its longitudinal axis can hold flotation (14) such as Polystyrene or any other floating material. This causes the turbine to be floating in deep seas or rivers. In order to avoid any shaking or turbine replacement, the flotation material (14) is connected to a cable (15), at the end of which heavy weights (16) are tied. While using this invention in rivers.
The turbine has a horizontal axis and it is placed in the fluid in a way that the longitudinal axis is in line with the direction of fluid flow. Rowing vanes (10) are in radial position and perpendicular to the longitudinal axis of turbine. When the rowing vanes (10) enter the water, the flexible rowing blades (20) are tilted after the first stroke to water and show less strength against drag power. After that, flexible rowing blades (20) are inside the water and plate-shaped vanes (9) are on the water. The surface waves strike the plate-form vane (9) and the flow under the water surface exerts force to the flexible rowing blades (20) and causes them to be closed and the vane which is exposed to the direct flow moves forward. This vane continues its movement in the same position as a result of fluid flow up until the time that the next vane is not plunged into the water. As the next vane enters water, the rear vane cannot directly receive more energetic flow because of the direct stoke of water flow to this vane. At this stage, the rear vane may turn into a barrier for the easy movement of front vane due to a rise in the drag force against propulsion force of fluid flow and as a result some part of propulsion force is spent on dominating drag force and kinesthetic energy of fluid. In order to overcome this problem, flexible rowing blades
(20) which are inside the water are opened due to the drag force available in the front part of rear blade (it means against the direction of fluid flow) and facilitates the movement of vanes which are directly exposed to the fluid flow -front vane- and consequently it leads to a reduction in generated energy dissipation. The flexible rowing blades can be tilted like a tilted door if at that point the drag force is more than propulsion force of the vanes. This function prevents the vanes which are the main part for receiving fluid energy to change into a barrier for the rotation of turbine system. This mechanism is repeated alternately and whenever a vane enters the water.
Swing connection (21) of flexible rowing blades to the main frame (19) is created as a result of free bars which are placed at their end in the ball bearing seal (23) which is connected to the main frame (19) and cause the rowing blades to be tilted vertically like a tilted door, due to their rotation around the longitudinal axis of flexible blades.
However the tilting can be done horizontally by changing the connection mechanism between flexible blades and main frame. But vertical tilting is preferable for this mechanism. Moreover, these tilted blades return to their previous state by the springs installed for each blade while getting out of water or removing the drag force.
The state of vanes in the water is perpendicular to water flow and it strikes the vanes in a vertical angle.
The rotational movement of vanes around the longitudinal axis of turbine is possible through mounting the vanes on a pair of orbital paths (6) and their connection to a pair of finny chains (2) and wheel chain (3). There is a welding rigid connection between shock absorber (8) and lateral stand (22). Furthermore, these connections between the vane and mentioned parts make the vane stable against fluid flow and turbulence.
The number of vanes and size of turbine can be different according to the requirements, kind and condition of its usage. But, we should consistently maintain the balance of vane movement in the orbit for installing vanes and we should never disturb this balance. In order to create this balance, the vanes must be installed in a certain and specific distance to each other.
This linear turbine can be placed in sea or near the beach. As it is represented in the figure 2, when the vanes are out of water, the plate-shaped vane is placed under it and toward the water and flexible blades (20) are placed above it and toward the sky, but their position would be reversed when it enters the water.
The advantages of this invention
According to the previous knowledge assessment and the nature of present invention, the advantages of this invention are as follows:
1- Increasing the efficiency of extracting energy compared to other samples of linear water turbines because of using a particular design for vanes which decreases the drag force exerted on the vanes.
2- Increasing the efficiency of extracting energy compared to other samples of linear water turbines because of using a particular design in which the river waves and flow hit the vanes directly in their flow.
3- Reducing turbine depreciation while hitting the fluid flows because of using shock absorbers.
4- The possibility of its installation in seas and rivers either in a stable manner or floating
5- The possibility of its installation in infrastructures of river bridges
6- Using this invention and producing a longer turbine, we can find out the kinesthetic movement of several irregular waves along this turbine and change it into electricity with maximum uninterrupted efficiency.
The explicit statement of industrial application of this invention
The application of this invention is in the field of new energies, in linear water turbine section. It is used for extracting energy from fluid flow and changing it into rotational energy and finally electricity.
Explaining the method to implement this invention
If we want to use this turbine in the beach, we can arrange some of rowing vane next to each other as you can see in fig 3. Because of special design of rowing vane, it can use most power of water with less lose.
While installing the turbine, we should regulate water level according to plate- shaped vane (9) so that this plate-shaped and rectangular part can be higher than water level at the time of wave creation. In order to regulate it easily, adjustment holes have been used when the finny chassis are attached to main chassis so that we could obtain an appropriate height. To avoid the corrosion of turbine segments, anti- corrosion materials have been used.
The general efficiency of system mostly depends on the speed of fluid flow and propulsion force exerted by the fluid. For the maximum efficiency, we need to use a gearbox and generator with such a power that is suitable for the speed, latitude, and
depth of a river. All parts of turbine can be variable based on the condition of its usage.
Claims
1. A system of increasing the efficiency of rail linear turbine with piston and flexible vanes
2. According to claim 1, rowing vane includes plate-shaped vane, flexible rowing blades and the main frame.
3. According to claim 2, the plate-shaped vane is connected in front of the main frame toward the flow direction. The flexible rowing blades are vertically connected to the main frame by swing connection.
4. According to claim 2, fender is connected to lateral basis on one side and rostral chain on the other side.
5. According to claim 4, the main frame of vane is connected to lateral basis.
6. According to claim 1, the path of paddle movement is like an orbit in the geometrical shape of a stadium which is dragged around the longitudinal axis of turbine and it is located at both sides of it and it is also connected to the main chassis.
7. According to claim 2, the vanes are mounted on the upper and lower side of orbital path by latitude stands which are at the end of roll bearing. Through this connection and wheel chain, swirling will be possible.
8. According to claim 1, the turbine has a horizontal axis and it is placed in the fluid in a way that the longitudinal axis is in line with the direction of fluid flow.
9. According to claim 1, when the rowing vanes enter the water, the flexible rowing blades are tilted after the first stroke to water and show less strength against drag power.
10. According to claim 1, the movement of vanes which are directly exposed to the fluid flow -front vane- and consequently it leads to a reduction in generated energy dissipation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IR139250140003008849 | 2013-12-22 | ||
| IR13923008849 | 2013-12-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2015092769A2 true WO2015092769A2 (en) | 2015-06-25 |
| WO2015092769A3 WO2015092769A3 (en) | 2016-01-07 |
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ID=83230842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2014/067174 WO2015092769A2 (en) | 2013-12-22 | 2014-12-19 | The system of increasing the efficiency of rail linear turbine with piston and flexible vanes |
Country Status (1)
| Country | Link |
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| WO (1) | WO2015092769A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR20220100012A (en) * | 2022-01-07 | 2023-08-08 | Πετρος Σπυρου Τατσης | Energy generation mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US642022A (en) | 1899-10-18 | 1900-01-23 | Francis John Viel | Wheel-hub. |
| US5451137A (en) | 1994-01-11 | 1995-09-19 | Northeastern University | Unidirectional helical reaction turbine operable under reversible fluid flow for power systems |
| US6652221B1 (en) | 1999-02-24 | 2003-11-25 | Peter Praenkel | Water current turbine sleeve mounting |
| WO2013038721A1 (en) | 2011-09-13 | 2013-03-21 | Kamiya Minoru | Power generation structure utilizing natural energy including ocean current, tidal current, and waves, and wave absorbing inversion guidance curved surface column water channel structure |
| US8497594B2 (en) | 2011-07-27 | 2013-07-30 | Dlz Corporation | Horizontal-axis hydrokinetic water turbine system |
| WO2014065282A1 (en) | 2012-10-22 | 2014-05-01 | Shimizu Tadao | Bottomless cup type water power conversion device using flowing water energy |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US66456A (en) * | 1867-07-09 | Elisha beiggs | ||
| US1432271A (en) * | 1921-03-30 | 1922-10-17 | Alles Henry | Current motor |
| JPS57151074A (en) * | 1981-03-16 | 1982-09-18 | Hokuto Seisakusho:Kk | Power generator based on conversion of kinetic energy of wave, tide, or other fluids |
| DE202010013527U1 (en) * | 2010-09-26 | 2011-02-10 | Schulte, Arnim | Flow water wheel |
-
2014
- 2014-12-19 WO PCT/IB2014/067174 patent/WO2015092769A2/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US642022A (en) | 1899-10-18 | 1900-01-23 | Francis John Viel | Wheel-hub. |
| US5451137A (en) | 1994-01-11 | 1995-09-19 | Northeastern University | Unidirectional helical reaction turbine operable under reversible fluid flow for power systems |
| US6652221B1 (en) | 1999-02-24 | 2003-11-25 | Peter Praenkel | Water current turbine sleeve mounting |
| US8497594B2 (en) | 2011-07-27 | 2013-07-30 | Dlz Corporation | Horizontal-axis hydrokinetic water turbine system |
| WO2013038721A1 (en) | 2011-09-13 | 2013-03-21 | Kamiya Minoru | Power generation structure utilizing natural energy including ocean current, tidal current, and waves, and wave absorbing inversion guidance curved surface column water channel structure |
| WO2014065282A1 (en) | 2012-10-22 | 2014-05-01 | Shimizu Tadao | Bottomless cup type water power conversion device using flowing water energy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR20220100012A (en) * | 2022-01-07 | 2023-08-08 | Πετρος Σπυρου Τατσης | Energy generation mechanism |
| GR1010607B (en) * | 2022-01-07 | 2024-01-23 | Πετρος Σπυρου Τατσης | Energy generation mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015092769A3 (en) | 2016-01-07 |
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