EP1625284A2 - Thermal regenerator of the photothermic piston motor with impulse steam generation - Google Patents
Thermal regenerator of the photothermic piston motor with impulse steam generationInfo
- Publication number
- EP1625284A2 EP1625284A2 EP04732248A EP04732248A EP1625284A2 EP 1625284 A2 EP1625284 A2 EP 1625284A2 EP 04732248 A EP04732248 A EP 04732248A EP 04732248 A EP04732248 A EP 04732248A EP 1625284 A2 EP1625284 A2 EP 1625284A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- motor
- steam
- photothermic
- temperature body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K21/00—Steam engine plants not otherwise provided for
- F01K21/02—Steam engine plants not otherwise provided for with steam-generation in engine-cylinders
-
- 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
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/003—Devices for producing mechanical power from solar energy having a Rankine cycle
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
Definitions
- the invention relates to thermal regenerators mainly of photothermic piston motors with impulse generation of steam directly in the motor work space.
- thermal regenerators mainly of photothermic piston motors with impulse generation of steam directly in the motor work space
- thermal regenerators for example camera-photoelectric converter designed mainly for placement in the focus of a heliostat" according to patent registration SK-PP 1560-1997.
- various solar piston hot-air motors and motors utilizing heated hydrogen or helium are known, for example the broad range of Stirling motors.
- photothermic piston motors with impulse generation of steam directly in the work space of the motor the outer regeneration of transferred heat by means of the preheating of conversion fluid at the entrance into the work space of the motor is known.
- the known photothermic piston motors have low thermal efficiency, due to their insufficient outer and unsolved inner regeneration of transferred heat, and therefore they are not competitive with other thermal engines.
- a disadvantage of the known Stirling motor despite its having, due to the sophisticated manner of transferred heat regeneration, the highest thermal efficiency of all thermal piston engines currently in use, is its high technical demands and associated high financial costs.
- Current photothermic piston motors with impulse generation of steam directly in the work space of the motor are technically simpler and cheaper compared with the Stirling solar motors, but their greatest disadvantage is lower thermal efficiency. Disclosure of Invention
- the thermal regenerator of the photothermic piston motor with impulse generation of steam which is, at the entrance of heat into the motor, composed of a high-temperature capillary porous body placed below an optically permeable cover of the hermetic work space of the motor; the entrance of a working fluid into the work space of the motor includes a conversion fluid injection jet and the exit of the working fluid from the work space of the motor is made up of a piston-timed exhaust channel of steam.
- the essence of the solution according to the invention is that mainly on the bottom of the piston is distantly fixed a steam-permeable capillary porous low- temperature body, on which, opposite to a steam-permeable and partly optical ly- permeable capillary porous high-temperature body, is created an evaporation surface of the conversion fluid.
- the conversion fluid evaporation surface of the capillary porous low-temperature body is before the end of conversion movement of the piston occurring in the injection range of the conversion fluid injection jet, which is embedded in the flank skeleton of the photothermic head of the motor cylinder such that in the work space of the motor it is positioned between the inner surface of the capillary porous high-temperature body and the evaporation surface of the capillary porous low-temperature body.
- Minimally at the end of the expansion movement of the piston is an exhaust channel linked with a collection space created between the bottom of the piston and a capillary porous low- temperature body distantly fixed to the bottom of the piston, through the capillaries of which the exhaust channel is concurrently linked with the work space of the motor cylinder.
- An advantage of the capillary porous thermal regenerator is regenerative usage of transferred heat for the impulse transformation of the conversion fluid to saturated steam after the termination of the expansion movement of the piston.
- a part of the transferred heat returns to the beginning of the next steam cycle of the motor without leaving the motor work space.
- the regeneration of transferred heat increases the enthalpy of the working fluid and hence increases the thermal efficiency of the motor steam cycle.
- Fig.1 is shown a design of the thermal regenerator before the end of the compression movement of the piston and in Fig. 2 is shown a design of the thermal regenerator at the end of the expansion movement of the piston.
- the thermal regenerator of the photothermic piston motor with impulse generation of steam is according to Fig. 1 and Fig. 2 composed of a photothermic head 100 of the motor and a piston driving mechanism 200.
- Inner work space of the motor is comprised of the work space of a cylinder 201 and the inner space of the photothermic head 100 of the motor.
- the capillary porous high-temperature body 101 whose flank is fixed to the skeleton 102 of the photothermic head 100 of the motor that is hermetically closed from the side of heat entrance into the work space of the motor by the optically permeable cover 103, which is fixed between the skeleton 102 of the photothermic head 100 of the motor and the thrust lid 104.
- the capillary porous high-temperature body 101 whose flank is fixed to the skeleton 102 of the photothermic head 100 of the motor that is hermetically closed from the side of heat entrance into the work space of the motor by the optically permeable cover 103, which is fixed between the skeleton 102 of the photothermic head 100 of the motor and the thrust lid 104.
- the 95 high-temperature body 101 is designed so that it is steam-permeable and partly optically permeable.
- the entrance of the working fluid into the work space of the motor is composed of a conversion fluid injection jet 105. which is positioned in the flank of the skeleton 102 of the photothermic head 100 of the motor, between the capillary porous high-temperature body 101 and the piston driving mechanism 100 200.
- the piston driving mechanism 200 is made up of a cylinder 201. in which, at the end B of expansion movement of the piston 203, is, from the inner side, positioned a piston 203 timed exhaust channel 202 of steam.
- a steam-permeable capillary porous low-temperature body 204 On the bottom of the piston 203 is distantly fixed a steam-permeable capillary porous low-temperature body 204, on which, opposite to the capillary porous high-temperature body 101, is 105 created an evaporation surface 205 of the conversion fluid and which, before the end A of the compression movement of the piston 203, occurs in the injection range of the conversion fluid injection jet 105.
- the mechanical output of the piston driving mechanism is a piston rod 206, which is axially mechanically joined with the piston 203.
- the capillary porous low-temperature body 204 moves together with the piston 203. moving alternately from the inner space of the photothermic head 100 of the motor to the work space of the cylinder 201 and vice versa.
- the capillary porous low-temperature body 204 functionally belongs to the photothermic head 100 of the motor and also to the piston driving mechanism 200.
- the piston 203 and the capillary porous low- temperature body 204 occur before the end A of compression movement of the piston 203.
- the capillary porous high-temperature body 101 ' s heated to the overheating temperature by the effect of absorbed photothermic radiation.
- the capillary porous low-temperature body 204 is heated to the working evaporation
- the thermal regenerator of the photothermic piston motor with impulse generation of steam may be used in the construction of steam piston engines with impulse generation of steam directly in the work space of the motor.
- These motors are suitable mainly for usage in the ecologization of electricity generation, where 140 direct solar radiation energy or other ecological primary source such as biogas or solar hydrogen is used as a primary energy source. It is also technically possible to use as the energy source high-potential waste heat from technological processes or also traditionally used fuels such as fossil fuels, bio-fuels, combustible waste and the like.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Fluid-Pressure Circuits (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The thermal regenerator of photothermic piston motor with impulse generation of steam is composed of a capillary porous high-temperature body (101) positioned below an optically permeable cover (103) of the hermetic work space of the motor, which is, at the entrance of a working fluid into the motor, equipped with a conversion fluid injection jet (105), and at the exit of the working fluid from the motor it is equipped with a piston (203) timed exhaust channel (202) of steam. The essence of the solution is that at the end (B) of expansion movement of the piston (203) there is, in front of the exhaust channel (202) of steam, on the bottom of the piston, (203) distantly fixed a steam-permeable capillary porous low-temperature body (204), on which, opposite to the steam-permeable and partly optically permeable capillary porous high-temperature body (101), is created a conversion fluid evaporation surface (205), which before the end (A) of compression movement of the piston (203) occurs in the injection range of a conversion fluid injection jet (105) that is placed in the flank of a skeleton (102) of a photothermic head (100) of the motor in space between the inner surface of the capillary porous high-temperature body (101) and the evaporation surface (205) of the capillary porous low-temperature body (204).
Description
Thermal regenerator of the photothermic piston motor with impulse steam generation
Technical Field
The invention relates to thermal regenerators mainly of photothermic piston motors with impulse generation of steam directly in the motor work space.
Background Art
Various thermal regenerators, mainly of photothermic piston motors with impulse generation of steam directly in the motor work space, are currently known, for example „thermo-mechanic converter designed mainly for placement in the focus of a heliostat" according to patent registration SK-PP 1560-1997. Besides the photothermic piston motors with steam circulation, various solar piston hot-air motors and motors utilizing heated hydrogen or helium are known, for example the broad range of Stirling motors. In photothermic piston motors with impulse generation of steam directly in the work space of the motor, the outer regeneration of transferred heat by means of the preheating of conversion fluid at the entrance into the work space of the motor is known. For practical usage, the known photothermic piston motors have low thermal efficiency, due to their insufficient outer and unsolved inner regeneration of transferred heat, and therefore they are not competitive with other thermal engines. A disadvantage of the known Stirling motor, despite its having, due to the sophisticated manner of transferred heat regeneration, the highest thermal efficiency of all thermal piston engines currently in use, is its high technical demands and associated high financial costs. Current photothermic piston motors with impulse generation of steam directly in the work space of the motor are technically simpler and cheaper compared with the Stirling solar motors, but their greatest disadvantage is lower thermal efficiency.
Disclosure of Invention
The mentioned deficiencies are to a significant extent eliminated by the solution of the thermal regenerator of the photothermic piston motor with impulse generation of steam, which is, at the entrance of heat into the motor, composed of a high-temperature capillary porous body placed below an optically permeable cover of the hermetic work space of the motor; the entrance of a working fluid into the work space of the motor includes a conversion fluid injection jet and the exit of the working fluid from the work space of the motor is made up of a piston-timed exhaust channel of steam.
The essence of the solution according to the invention is that mainly on the bottom of the piston is distantly fixed a steam-permeable capillary porous low- temperature body, on which, opposite to a steam-permeable and partly optical ly- permeable capillary porous high-temperature body, is created an evaporation surface of the conversion fluid. The conversion fluid evaporation surface of the capillary porous low-temperature body is before the end of conversion movement of the piston occurring in the injection range of the conversion fluid injection jet, which is embedded in the flank skeleton of the photothermic head of the motor cylinder such that in the work space of the motor it is positioned between the inner surface of the capillary porous high-temperature body and the evaporation surface of the capillary porous low-temperature body. Minimally at the end of the expansion movement of the piston is an exhaust channel linked with a collection space created between the bottom of the piston and a capillary porous low- temperature body distantly fixed to the bottom of the piston, through the capillaries of which the exhaust channel is concurrently linked with the work space of the motor cylinder.
Advantages of Invention
An advantage of the capillary porous thermal regenerator is regenerative usage of transferred heat for the impulse transformation of the conversion fluid to saturated steam after the termination of the expansion movement of the piston.
A part of the transferred heat returns to the beginning of the next steam cycle of
the motor without leaving the motor work space. The regeneration of transferred heat increases the enthalpy of the working fluid and hence increases the thermal efficiency of the motor steam cycle.
Brief Description of Drawings
In the attached drawing is shown in simplified section an example of a design of the thermal regenerator of the photothermic piston motor according to the invention. In Fig.1 is shown a design of the thermal regenerator before the end of the compression movement of the piston and in Fig. 2 is shown a design of the thermal regenerator at the end of the expansion movement of the piston.
List of positions in the drawing (Fig. 1 and Fig.2)
100 Photothermic head of the motor (constructional formation)
101 - capillary porous high-temperature body (absorber) 102 - skeleton of the photothermic head
103 - optically permeable cover
104 -thrust lid
105 - injection jet
200 Piston driving mechanism (constructional formation) 201 - cylinder
202 - exhaust channel
203 - piston
204 - capillary porous low-temperature body (regenerator)
205 - evaporation surface 206 - piston rod
Positions of the piston
A - end of the compression movement of the piston B - end of the expansion movement of the piston
Mode for Carrying Out the Invention
85 The thermal regenerator of the photothermic piston motor with impulse generation of steam is according to Fig. 1 and Fig. 2 composed of a photothermic head 100 of the motor and a piston driving mechanism 200. Inner work space of the motor is comprised of the work space of a cylinder 201 and the inner space of the photothermic head 100 of the motor. The photothermic head 100 of the motor
90 is composed of a capillary porous high-temperature body 101 , whose flank is fixed to the skeleton 102 of the photothermic head 100 of the motor that is hermetically closed from the side of heat entrance into the work space of the motor by the optically permeable cover 103, which is fixed between the skeleton 102 of the photothermic head 100 of the motor and the thrust lid 104. The capillary porous
95 high-temperature body 101 is designed so that it is steam-permeable and partly optically permeable. The entrance of the working fluid into the work space of the motor is composed of a conversion fluid injection jet 105. which is positioned in the flank of the skeleton 102 of the photothermic head 100 of the motor, between the capillary porous high-temperature body 101 and the piston driving mechanism 100 200. The piston driving mechanism 200 is made up of a cylinder 201. in which, at the end B of expansion movement of the piston 203, is, from the inner side, positioned a piston 203 timed exhaust channel 202 of steam. On the bottom of the piston 203 is distantly fixed a steam-permeable capillary porous low-temperature body 204, on which, opposite to the capillary porous high-temperature body 101, is 105 created an evaporation surface 205 of the conversion fluid and which, before the end A of the compression movement of the piston 203, occurs in the injection range of the conversion fluid injection jet 105. The mechanical output of the piston driving mechanism is a piston rod 206, which is axially mechanically joined with the piston 203.
110 The capillary porous low-temperature body 204 moves together with the piston 203. moving alternately from the inner space of the photothermic head 100 of the motor to the work space of the cylinder 201 and vice versa. Hence, the capillary porous low-temperature body 204 functionally belongs to the photothermic head 100 of the motor and also to the piston driving mechanism 200.
115 Before the start of the motor, the piston 203 and the capillary porous low- temperature body 204 occur before the end A of compression movement of the piston 203. The capillary porous high-temperature body 101 's heated to the overheating temperature by the effect of absorbed photothermic radiation. The capillary porous low-temperature body 204 is heated to the working evaporation
120 temperature by the effect of thermal radiation of the capillary porous high- temperature body 101 and by the effect of a partial illumination of the photothermic radiation that passed via the capillaries of the capillary porous high-temperature body 101. By the injection of the conversion fluid onto the evaporation surface 205 of the capillary porous low-temperature body 204 a saturated steam is created,
125 which comes into contact with the capillary porous high-temperature body 101. Consequently, a superheated steam is created, which expands in the cylinder 201, does work and, at the end B of the expansion movement of the piston 203, leaves the work space of the motor through the capillaries of the steam-permeable capillary porous low-temperature body 204 and through the exhaust channel 202
130 of steam, which is at that time, due to the position of the piston 203. open. Before leaving the work space of the motor, the steam transfers a part of its thermal energy to the capillary porous low-temperature body 204, due to which part of transferred heat returns back to the beginning of the next steam cycle of the motor.
135 Industrial Applicability
The thermal regenerator of the photothermic piston motor with impulse generation of steam may be used in the construction of steam piston engines with impulse generation of steam directly in the work space of the motor. These motors are suitable mainly for usage in the ecologization of electricity generation, where 140 direct solar radiation energy or other ecological primary source such as biogas or solar hydrogen is used as a primary energy source. It is also technically possible to use as the energy source high-potential waste heat from technological processes or also traditionally used fuels such as fossil fuels, bio-fuels, combustible waste and the like.
Claims
145
C L A I M S
The thermal regenerator of the photothermic piston motor with impulse generation of steam, which is at the entrance of the heat into the work space of the
150 motor composed of a capillary porous high-temperature body (101) placed below an optically permeable cover (103) of a hermetically closed work space of the motor, while the entrance of the working fluid into the work space is made up of a conversion fluid injection jet (105) that is positioned in the flank of a skeleton (102) of the photothermic head (100) of a cylinder (201) of the motor, while an
155 exhaust channel (202), which is positioned at the inner side of the motor cylinder
(201) coat, creates a piston (203) timed outlet of the impulse generated steam from the work space of the motor, characterized by that, at least at the end (B) of expansion movement of the piston (203) the exhaust channel (202) is linked with a collecting space created between the bottom of the piston (203) and
160 steam-permeable capillary porous low-temperature body (204) distantly fixed to the bottom of the piston (203) through the capillaries of which the exhaust channel
(202) is concurrently linked with the work space of the motor cylinder (201), while, at least at the end (A) of compression movement of the piston (203), an evaporation surface (205), which is positioned on the outer side of the capillary
165 porous low-temperature body (204), occurs in the injection range of the conversion fluid injection jet (105), which is positioned in the skeleton (102) of the photothermic head (100) of the motor cylinder (201) between the inner surface of the steam-permeable and the partly optically permeable capillary porous high- temperature body (101) and the evaporation surface (205) of the capillary porous
170 low-temperature body (204).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SK573-2003A SK284635B6 (en) | 2003-05-12 | 2003-05-12 | Thermal regenerator of photothermal piston engine with impulse steam generation |
| PCT/SK2004/000006 WO2004099574A2 (en) | 2003-05-12 | 2004-05-11 | Thermal regenerator of the photothermic piston motor with impulse steam generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1625284A2 true EP1625284A2 (en) | 2006-02-15 |
Family
ID=33434254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04732248A Withdrawn EP1625284A2 (en) | 2003-05-12 | 2004-05-11 | Thermal regenerator of the photothermic piston motor with impulse steam generation |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1625284A2 (en) |
| SK (1) | SK284635B6 (en) |
| WO (1) | WO2004099574A2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL370154A1 (en) * | 2004-09-17 | 2006-03-20 | HUZAR POWER Sp.z o.o. | Steam engine working medium injector |
| US8065876B2 (en) * | 2005-09-21 | 2011-11-29 | Solartrec Inc. | Heat engine improvements |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2681076B2 (en) * | 1987-07-31 | 1997-11-19 | 尚次 一色 | Radiant heating Stirling engine |
| DE19507511C2 (en) * | 1995-03-03 | 1998-02-12 | Meta Motoren Energietech | Method and device for converting radiation power, in particular solar radiation, into mechanical power |
| US6128903A (en) * | 1998-09-11 | 2000-10-10 | Riege; Carl Ralph | Solar portable steam engine |
| DE10118769A1 (en) * | 2001-04-09 | 2003-01-02 | Enerlyt Potsdam Gmbh En Umwelt | Solar Stirling motor to drive water pumps has membrane as working piston, charged by working gas pressure on one side and medium to be pumped on other side |
-
2003
- 2003-05-12 SK SK573-2003A patent/SK284635B6/en not_active IP Right Cessation
-
2004
- 2004-05-11 WO PCT/SK2004/000006 patent/WO2004099574A2/en not_active Ceased
- 2004-05-11 EP EP04732248A patent/EP1625284A2/en not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004099574A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| SK284635B6 (en) | 2005-08-04 |
| SK5732003A3 (en) | 2005-01-03 |
| WO2004099574A3 (en) | 2005-01-20 |
| WO2004099574A2 (en) | 2004-11-18 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: GOLDENSUN SLOVAKIA, S.R.O. |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: GOLDENSUN SLOVAKIA, S.R.O. |
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