JP2008075488A - Thermal power generation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thermal power generation system enhancing power generation efficiency by increasing a heat difference of a working medium between an inlet side and outlet side of a nozzle for injecting steam of a working medium to a turbine. <P>SOLUTION: The system directly or indirectly heats a working medium 3 by heat energy, and rotationally drives a bucket 5b by ejecting steam of the working medium 3 through a nozzles 8. Power is generated in a generator stator part 6B provided facing a generator rotor 6A by rotating the generator rotor 6A through the rotation of the bucket 5b. A member 18 between a nozzle inlet and outlet for partitioning the inlet part and outlet part of the nozzle 8 has an effect for reducing thermal conductivity in a direction directed from the nozzle inlet part to nozzle outlet part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a thermoelectric generation system that converts thermal energy such as solar heat into electric energy.

  As a conventional example of this type of thermoelectric power generation system, a working medium is heated by solar heat in a collector section, and high-pressure steam of the working medium is transferred from one or a plurality of nozzles provided on the outer peripheral side of a turbine blade to the blade. The turbine is rotated and driven, and the steam of the working medium that has exited the turbine blades is returned to the liquid again by the condenser and circulated to the collector section, and the generator is generated by the rotation of the turbine. A solar thermal power generation system is known (for example, Patent Documents 1 to 4).

  FIG. 7 is a sectional view showing an example of a turbine unit in such a conventional thermoelectric generation system, and FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. In the turbine unit 32, a generator 36 and a turbine 35 are rotatably disposed above and below in a unit housing 42, and the generator rotor 36A of the generator 36 and the turbine 35 are connected to each other by a main shaft 37 in a vertical posture. ing. The turbine 35 is a radial flow turbine that is driven to rotate by receiving the steam of the working medium 33 injected in the radial direction from the nozzles 38 arranged on the outer peripheral side thereof on the moving blades 35 b, and is attached to the main shaft 37. A plurality of moving blades 35b arranged in the circumferential direction are provided on the outer peripheral portion of a disk-shaped moving blade mounting member 35a concentric with each other. The nozzle 38 is provided on a cylindrical nozzle member 48 provided on the outer peripheral side of the turbine 35 concentrically with the turbine 35. The outer peripheral side of the nozzle member 48 that is the inlet side of the nozzle 38 is surrounded by a nozzle inlet member 42A that forms a part of the turbine housing 42, and a ring-shaped nozzle inlet is provided between the nozzle inlet member 42A and the nozzle member 48. A side space 49 is formed. The working medium 33, which is heated by a collector (not shown) and becomes steam, passes from the intake port 50 provided in the bottom wall 42a of the turbine housing 42 to the nozzle inlet side space 49, and is transferred from the nozzle 38 to the turbine rotor blade 35b. It is injected towards. The steam of the working medium 33 that has passed through the turbine blades 35b and has reached the inside of the nozzle member 48 is exhausted from an exhaust port 51 provided in the bottom wall portion 42a of the turbine housing 42 and sent to a condenser (not shown). .

FIG. 9 is a partial cross-sectional view showing another example of a turbine unit in a conventional thermoelectric generation system. In the turbine unit 32, a generator (not shown) and a turbine 35 are rotatably arranged on the left and right in the unit housing 42, and the generator rotor of the generator and the turbine 35 are connected to each other by a main shaft 37 in a horizontal posture. Yes. The turbine 35 is an axial-flow turbine that is rotationally driven by receiving the steam of the working medium 33 injected in the axial direction from a nozzle 38 disposed on one side (the left side in FIG. 9) of the outer peripheral portion thereof. And a plurality of blades 35b arranged in the circumferential direction on the outer peripheral portion of a disk-shaped blade attachment member 35a that is provided integrally with the main shaft 37 and concentric with the main shaft 37. The nozzle 38 is provided in a ring-shaped nozzle member 48 disposed on one side of the turbine 35. FIG. 10 is a cross-sectional view of the axial arrangement of the nozzle member 48 and the turbine 35. One side of the nozzle member 48 that is the inlet side of the nozzle 38 is surrounded by a nozzle inlet member 42 </ b> A that forms a part of the turbine housing 42, and a ring-shaped nozzle is interposed between the nozzle inlet member 42 </ b> A and the nozzle member 48. An entrance side space 49 is formed. The working medium 33, which is heated by a collector section (not shown) and becomes steam, is injected from the nozzle 38 toward the turbine rotor blade 35b through the nozzle inlet side space 49 from the intake port 50 provided in the nozzle inlet member 42A. Is done. The steam of the working medium 33 that has passed through the turbine rotor blades 35 b is exhausted from the exhaust port 51 provided in the wall portion 42 a of the turbine housing 42 and sent to a condenser (not shown).
JP 2002-242893 A JP 2000-110515 A JP 2003-227315 A JP 2004-278335 A

In the thermoelectric power generation system having the turbine unit 32 having the structure shown in FIGS. 7 and 8, the steam of the working medium 33 is adiabatically expanded and ejected from the nozzle 38, so that the steam temperature of the working medium 38 is the inlet of the nozzle 38. The outlet side of the nozzle 38 is lower than the side. Therefore, in the nozzle member 48 that partitions the inlet side and the outlet side of the nozzle 38, heat conduction occurs in the direction from the nozzle inlet side to the nozzle outlet side, and heat is taken away from the working medium 33 on the nozzle inlet side, resulting in a heat drop. There is a problem that the power generation efficiency of the system becomes small.
Further, in the nozzle inlet member 42A surrounding the space 49 on the inlet side of the nozzle 38, the inner surface side exposed to the working medium 33 becomes high temperature, whereas the outer surface side is exposed to the outside air, so the nozzle inlet member 42A. Heat conduction occurs from the inner surface to the outer surface. Therefore, this heat conduction also removes heat from the working medium 33 on the nozzle inlet side, and the heat drop of the working medium 33 between the nozzle inlet side and the nozzle outlet side is further reduced, and the power generation efficiency of the system Becomes even smaller.

  Such a problem is not limited to the case where the turbine 35 is a radial flow turbine that injects the steam of the working medium from the outer peripheral side as shown in FIGS. 7 and 8, but the steam of the working medium is injected from the inner peripheral side. The same occurs when a radial turbine is used or when an axial turbine as shown in FIGS. 9 and 10 is used.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a thermoelectric generation system capable of increasing the heat drop of a working medium between an inlet side and an outlet side of a nozzle that injects steam of the working medium into a turbine and improving power generation efficiency. That is.

In the thermoelectric generator system of the present invention, the working medium is heated directly or indirectly by thermal energy, the steam of the working medium is ejected from the nozzle to rotationally drive the rotor blade, and the generator rotor is driven by the rotation of the rotor blade. In the thermoelectric power generation system in which power is generated by a generator stator provided opposite to the generator rotor by rotating, a nozzle inlet / outlet member that partitions the nozzle inlet and the nozzle outlet is a nozzle inlet It has the effect | action which reduces the heat conduction of the direction which goes to a nozzle exit part from a part.
According to this configuration, the nozzle inlet / outlet member has an effect of reducing heat conduction in the direction from the nozzle inlet to the nozzle outlet, so that the vapor of the working medium takes heat away from the nozzle inlet / outlet member on the nozzle inlet side. The degree to which it is broken becomes low. As a result, the heat drop of the working medium between the inlet side and the outlet side of the nozzle is increased, and the power generation efficiency of the system is improved.

  In this invention, the nozzle inlet / outlet member may have a portion having a narrow cross-sectional area between the nozzle inlet portion and the nozzle outlet portion. Heat conduction is reduced by the narrow cross-sectional area of the nozzle inlet / outlet member.

  In the present invention, at least one of the nozzle inlet side and the nozzle outlet side of the nozzle inlet / outlet member may be covered with a resin material or a ceramic material. In this configuration, because of the low thermal conductivity of the resin material or ceramic material, the degree to which the vapor of the working medium is deprived of heat by the nozzle inlet / outlet member on the nozzle inlet side is reduced. The heat drop of the working medium 3 between them increases, and the power generation efficiency of the system is improved.

  In the present invention, the nozzle inlet / outlet member may be formed of a resin material or a ceramic material. Also in this configuration, due to the low thermal conductivity of the resin material or ceramic material, the degree of heat removal from the working medium vapor by the nozzle inlet / outlet member on the nozzle inlet side is low, so the nozzle inlet side and outlet side The heat drop of the working medium 3 between the two increases, and the power generation efficiency of the system is improved.

  In this invention, you may shape | mold the nozzle inlet member which comprises a nozzle inlet part with a resin material or a ceramic material. In the case of this configuration, the degree to which the vapor of the working medium is deprived of heat by the nozzle inlet member in the space on the nozzle inlet side is also reduced. As a result, the heat drop of the working medium between the inlet side and the outlet side of the nozzle is further increased, and the power generation efficiency of the system is further improved.

  In the present invention, the resin material may be a PEEK material (polyether ether ketone material) or a PPS material (polyphenylene sulfide material). Since PEEK material and PPS material are excellent in heat resistance and strength, they can be used under high temperature conditions and have low heat conduction.

  In the present invention, the thermal energy may be solar heat. In the case of a solar power generation system, the thermoelectric power generation system according to the present invention has a small amount of energy, so even if the amount of loss in the rotor blade is small, the ratio to the input energy becomes high, so the effect is more effective. To be demonstrated. Moreover, since the temperature of a working medium becomes low compared with the high load turbine with a large work, the resin material can also be used.

  In the thermoelectric generator system of the present invention, the working medium is heated directly or indirectly by thermal energy, the steam of the working medium is ejected from the nozzle to rotate the moving blade, and the rotation of the moving blade causes the generator rotor to rotate. In a thermoelectric power generation system in which power is generated by a generator stator portion provided opposite to the generator rotor by rotating, a nozzle inlet / outlet member that partitions the inlet portion of the nozzle and the outlet portion of the nozzle is a nozzle inlet Since it has the effect of reducing the heat conduction in the direction from the part toward the nozzle outlet, the difference in heat of the working medium between the inlet side and the outlet side of the nozzle that injects the steam of the working medium to the turbine is increased, Power generation efficiency can be improved.

A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a schematic configuration of the thermoelectric generator system of the present invention. This thermoelectric power generation system is a solar thermal power generation system that converts solar heat, which is thermal energy, into electric energy and outputs the electric energy. The thermoelectric power generation system includes a collector unit 1 that collects sunlight and absorbs solar heat, a turbine 5 and a generator 6. And a closed working medium path 4 for circulating the working medium 3 between the collector unit 1 and the turbine 5.
The working medium path 4 includes a nozzle 8 for rotating the steam of the working medium 3 heated by the collector unit 1 as high-pressure steam to the turbine 5 and rotationally driving the turbine 5, and a nozzle 8 for rotating the turbine 5 to rotate the turbine 5. It has a condenser 9 that returns the vapor of the used working medium 3 to a liquid, and a circulation pump 10 that circulates and supplies the working medium 3 that has been returned to a liquid to the collector unit 1.

  2 shows an enlarged sectional view of the turbine unit 2, and FIG. 3 shows a sectional view taken along the line III-III in FIG. In the turbine unit 2, the generator 6 and the turbine 5 are arranged one above the other. The generator 6 includes a pair of generator rotors 6A and 6A that are rotating portions and a generator stator portion 6B that is a stationary portion. Specifically, the generator 6 is an axial gap generator, and the main shaft 7 has a posture oriented in the vertical direction with respect to the generator stator portion 6B provided on the inner peripheral side of the cylindrical unit housing 12. A pair of provided generator rotors 6A and 6A are arranged opposite to each other with a predetermined gap therebetween. Power generation by the generator 6 is controlled by a controller 11 (FIG. 1).

The generator stator portion 6B has a coreless structure in which the stator base 13 is made of a non-magnetic material, and one or a plurality of coil portions 14 are arranged in a concentrated manner in the circumferential direction of the stator base 13. In addition, when the stator base 13 of the generator stator portion 6B is made of a magnetic material, an increase in starting torque, an increase in iron loss in a low-speed rotation region, noise and vibration due to cogging torque, etc. occur. Then, such a problem can be avoided. However, the generator 6 is not limited to the coreless structure described above, but may have another structure. The coil portion 14 is molded with a resin or the like in order to protect the insulating coating on the surface thereof. Thereby, it can avoid that the insulating coating of the surface of the coil part 14 in the generator stator part 6B is corroded by the organic solvent etc. which are the working medium 3, and cannot perform stable electric power generation.
Each generator rotor 6A is configured by arranging one or a plurality of magnets 16 on the circumference of the side surface of the flange-shaped rotor base 15 formed integrally with the main shaft 7 and facing the generator stator portion 6B. Has been. The magnetic poles of the magnet 16 in this case are arranged so that the magnetic flux is linked to the coil portion 14 of the generator stator portion 6B. For example, the upper rotor magnet is N pole and the lower rotor magnet is S pole.

  The turbine 5 is fitted to the lower end portion of the main shaft 7 and is positioned with a nut 17 screwed into the male screw portion at the lower end of the main shaft 7. It consists of a plurality of moving blades 5b arranged in a line in the circumferential direction at the outer peripheral portion. The moving blade 5b is made of a resin molded product or a metal product. A cylindrical nozzle inlet / outlet member 18 is provided on the outer periphery of the turbine 5, and one or a plurality of nozzles 8 penetrating through the nozzle inlet / outlet member 18 toward the blade row of the moving blade 5b are shown in FIG. (2 nozzles 8 are provided with a phase of 180 °) distributed in the circumferential direction as shown in FIG. Thereby, the steam of the working medium 3 is jetted from the nozzle 8 on the outer peripheral side of the turbine 5 in the radial direction of the turbine 5, and the turbine 5 is rotationally driven by receiving the steam by the moving blade 5b. That is, the turbine 5 in this embodiment is a radial flow turbine in which the steam of the working medium 3 is injected from the outer diameter side.

The bottom wall portion 12 a of the unit housing 12 is connected to the upstream portion of the working medium path 4 (FIG. 1), and the working medium 3 that is heated by the collector portion 1 and becomes steam is disposed on the outer peripheral side of the nozzle inlet / outlet member 18. An intake port 20 for flowing into the nozzle inlet side space 19 is provided so as to penetrate therethrough. The nozzle inlet side space 19 is a cylinder that forms part of the unit housing 12 by being arranged concentrically with the nozzle inlet / outlet member 18 on the outer peripheral side of the nozzle inlet / outlet member 18. It is a cylindrical space surrounded by the nozzle inlet member 12A.
Further, an exhaust port 21 through which the working medium 3 that has passed through the turbine rotor blade 5 b is discharged to the downstream portion of the working medium path 4 is provided through the bottom wall portion 12 a of the unit housing 12 below the arrangement portion of the turbine 8. It has been.

The nozzle inlet / outlet member 18 is a member provided with a hollow portion 18c as shown in FIG. 3 so that a portion having a narrow cross-sectional area is formed between the inlet side and the outlet side of the nozzle 8. The hollow portion 18c may be provided only in the base portion 18a of the nozzle inlet / outlet member 18, or may be provided in each of the base 18a and the tip portion 18b constituting the nozzle inlet / outlet member 18. Thereby, the nozzle inlet / outlet member 18 has an effect of reducing heat conduction in the direction from the inlet side to the outlet side of the nozzle 8.
The nozzle inlet member 12A constituting a part of the unit housing 12 is constituted by a heat insulating member such as a resin material or a ceramic material. As a resin material used as the nozzle inlet member 12A, a PEEK material or a PPS material excellent in heat resistance and strength is suitable. In this case, the resin material can be used under high temperature conditions and has low heat conduction.

  The main shaft 7 is rotatably supported by the unit housing 12 via non-contact bearings 22A to 22C such as magnetic bearings and foil bearings. In addition, you may perform the support of the main axis | shaft 7 with a contact-type bearing irrespective of the non-contact bearings 22A-2C.

  The operation of the thermoelectric generator system configured as described above will be described. The working medium 3 in the working medium path 4 is sent to the collector unit 1 by the circulation pump 10. The collector unit 1 absorbs solar heat and applies the absorbed heat energy to the working medium 3 to produce high-pressure steam. The high-pressure steam of the working medium 3 flows into the nozzle inlet side space 19 from the intake port 20 of the unit housing 12 and is injected to the moving blade 5b of the turbine 5 through the nozzle 8, whereby the turbine 5 is rotationally driven. The generator rotor 6A is rotated by the rotation of the turbine 5, and electric power is generated by the generator stator portion 6B provided to face the generator rotor 6A. This power generation control is performed by the controller 11. In this way, the rotation of the turbine 5 is converted into electric energy. The steam of the working medium 3 that has passed through the cascade of the turbine rotor blades 5 b is sent from the exhaust port 21 to the condenser 9 in the working medium path 3 to be liquefied, and sent again to the collector unit 1 by the circulation pump 10.

In this thermoelectric generator system, the nozzle inlet / outlet member 18 separating the inlet side and the outlet side of the nozzle 8 is, for example, a member provided with a hollow portion 18c, so that the cross-sectional area between the inlet portion and the outlet portion of the nozzle 8 is increased. As the structure having a narrow portion, the heat conduction in the direction from the nozzle inlet side to the nozzle outlet side is reduced, so that the vapor of the working medium 3 is transferred to the nozzle inlet / outlet member 18 in the nozzle inlet side space 19. The degree of heat deprived is reduced. As a result, the heat drop of the working medium 3 between the inlet side and the outlet side of the nozzle 8 is increased, and the power generation efficiency of the system is improved.
Note that the nozzle inlet / outlet member 18 is not a member having the hollow portion 18c, but is formed of a heat insulating member such as a resin material or a ceramic material, and reduces heat conduction in the direction from the nozzle inlet side to the nozzle outlet side. It is good also as what has. Also in this case, since the degree of the heat of the working medium 3 being removed from the nozzle inlet / outlet member 18 in the nozzle inlet side space 19 is reduced, the heat of the working medium 3 between the inlet side and the outlet side of the nozzle 8 is reduced. The head also increases and the power generation efficiency of the system improves.
In this embodiment, since the nozzle inlet member 12A is made of a heat insulating member such as a resin material (PEEK material or PPS material) or ceramic material, the vapor of the working medium 3 is discharged from the nozzle inlet side space 19 into the nozzle inlet member. The degree of heat deprived by 12A is also reduced. As a result, the heat drop of the working medium 3 between the inlet side and the outlet side of the nozzle 8 is further increased, and the power generation efficiency of the system is further improved.

  FIG. 4 shows a horizontal cross-sectional view of a turbine arrangement portion in a turbine unit in another embodiment of the thermoelectric generator system of the present invention. Other parts are the same as those in the first embodiment, and thus illustration and description thereof are omitted here. In this thermoelectric generator system, the nozzle inlet / outlet member 18 in the first embodiment is not made of a material having the hollow portion 18c, and the peripheral surface on the nozzle inlet side of the nozzle inlet / outlet member 18 is made of resin material, ceramic material, or the like. It is covered with a heat insulating member 23. However, the part which becomes the inlet of the nozzle 8 is opened. As the resin material used as the heat insulating member 23, a PEEK material or a PPS material excellent in heat resistance and strength is suitable. In this case, the resin material can be used under high temperature conditions and has low heat conduction.

  In the case of this embodiment, since the peripheral surface of the nozzle inlet side of the nozzle member 18 is covered with the heat insulating member 23, the heat conduction in the direction from the nozzle inlet side to the nozzle outlet side is reduced in the nozzle inlet / outlet member 18. Thus, the degree to which the vapor of the working medium 3 is deprived of heat by the nozzle inlet / outlet member 18 in the nozzle inlet side space 19 is reduced. As a result, the heat drop of the working medium 3 between the inlet side and the outlet side of the nozzle 8 is increased, and the power generation efficiency of the system is improved.

  FIG. 5 shows a horizontal sectional view of a turbine arrangement portion in a turbine unit in still another embodiment of the thermoelectric generator system of the present invention. Other parts are the same as those in the first embodiment, and thus illustration and description thereof are omitted here. In this thermoelectric generator system, the nozzle inlet / outlet member 18 in the first embodiment is not made of a material having the hollow portion 18c, and the peripheral surface on the nozzle outlet side of the nozzle inlet / outlet member 18 is made of resin material, ceramic material, or the like. It is covered with a heat insulating member 23. However, the part which becomes the exit of the nozzle 8 is opened. As the resin material used as the heat insulating member 23, a PEEK material or a PPS material excellent in heat resistance and strength is suitable. In this case, the resin material can be used under high temperature conditions and has low heat conduction.

  In the case of this embodiment, the peripheral surface on the nozzle outlet side of the nozzle inlet / outlet member 18 is covered with the heat insulating member 23, so that heat conduction in the direction from the nozzle inlet side to the nozzle outlet side in the nozzle inlet / outlet member 18 is performed. Therefore, the degree to which the vapor of the working medium 3 is deprived of heat by the nozzle inlet / outlet member 18 in the nozzle inlet side space 19 is reduced. As a result, the heat drop of the working medium 3 between the inlet side and the outlet side of the nozzle 8 is increased, and the power generation efficiency of the system is improved.

  FIG. 6 shows still another embodiment of the present invention. In the thermoelectric generation system of the present invention, instead of the working medium path 4 in the first embodiment shown in FIG. 1, the working medium path 4A of the working medium 3A that circulates through the collector section 1 and the working medium 3B that circulates through the turbine 5. The working medium path 4B is provided separately, and the heat energy of the working medium 3A heated by the collector 1 is applied to the working medium 3B on the turbine 5 side via the heat exchanger 24. The configuration of the turbine unit 2 is not limited to the configuration of FIGS. 2 and 3 and may be the configuration of the embodiment of FIGS. 4 and 5, and the description thereof is omitted here.

  Thus, when the working medium 3A for acquiring thermal energy from the collector unit 1 and the working medium 3B for rotating the turbine 5 are separated, a working medium suitable for each role can be selected. .

  In each of the embodiments described above, the case where the radial flow turbine that injects the steam of the working medium in the radial direction from the outer peripheral side is described as the turbine. However, the present invention is not limited thereto, and the turbine operates in the radial direction from the inner peripheral side. The same effect can be obtained when the radial flow turbine for injecting the medium vapor is used and when the axial flow turbine for injecting the working medium vapor in the axial direction is used.

1 is a schematic diagram of a thermoelectric generator system according to a first embodiment of the present invention. It is an expanded sectional view of the turbine unit in the power generation system. It is the III-III arrow sectional drawing in FIG. It is a horizontal sectional view of the turbine arrangement part in the turbine unit in the thermoelectric generator system concerning other embodiments of this invention. It is a horizontal sectional view of the turbine arrangement part in the turbine unit in the thermoelectric power generation system concerning further another embodiment of this invention. It is the schematic of the thermoelectric power generation system concerning further another embodiment of this invention. It is sectional drawing of the turbine unit in a prior art example. It is VIII-VIII arrow sectional drawing in FIG. It is a fragmentary sectional view of the turbine unit in other conventional examples. It is sectional drawing which shows the arrangement structure of the axial direction of the nozzle member and turbine rotor blade in the same turbine unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Collector part 2 ... Turbine unit 3, 3A, 3B ... Working medium 5 ... Turbine 5b ... Rotor blade 6 ... Generator 6A ... Generator rotor 6B ... Generator stator part 8 ... Nozzle 12A ... Nozzle inlet member 18 ... Nozzle inlet Inter-exit member 18c ... hollow part 23 ... heat insulating member

Claims (7)

The generator is heated by directly or indirectly heating the working medium with thermal energy, causing the steam of the working medium to be ejected from the nozzle to rotate the rotor blade, and rotating the generator rotor by the rotation of the rotor blade. In a thermoelectric power generation system that generates power with a generator stator provided opposite to the rotor,
The nozzle inlet / outlet member that partitions the nozzle inlet and the nozzle outlet has a function of reducing heat conduction in the direction from the nozzle inlet toward the nozzle outlet. .   The thermoelectric generation system according to claim 1, wherein the nozzle inlet / outlet member includes a portion having a narrow cross-sectional area between the nozzle inlet portion and the nozzle outlet portion.   2. The thermoelectric generator system according to claim 1, wherein at least one of the nozzle inlet side and the nozzle outlet side of the nozzle inlet / outlet member is covered with a resin material or a ceramic material.   The thermoelectric generation system according to claim 1, wherein the nozzle inlet / outlet member is formed of a resin material or a ceramic material.   The thermoelectric power generation system according to any one of claims 1 to 4, wherein a nozzle inlet member constituting the nozzle inlet portion is formed of a resin material or a ceramic material.   The thermoelectric generation system according to any one of claims 3 to 5, wherein the resin material is a PEEK material or a PPS material. The thermoelectric power generation system according to any one of claims 1 to 6, wherein the thermal energy is solar heat.

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